1.
Machine gun
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A machine gun is a fully automatic mounted or portable firearm designed to fire bullets in quick succession from an ammunition belt or magazine, typically at a rate of 300 to 1800 rounds per minute. Note that not all fully automatic firearms are machine guns, submachine guns, rifles, assault rifles, shotguns, pistols or cannons may be capable of fully automatic fire, but are not designed for sustained fire. Many machine guns also use belt feeding and open bolt operation, unlike semi-automatic firearms, which require one trigger pull per round fired, a machine gun is designed to fire for as long as the trigger is held down. Nowadays the term is restricted to heavy weapons, able to provide continuous or frequent bursts of automatic fire for as long as ammunition lasts. Machine guns are used against personnel, aircraft and light vehicles, or to provide suppressive fire. Some machine guns have in practice sustained fire almost continuously for hours, because they become very hot, practically all machine guns fire from an open bolt, to permit air cooling from the breech between bursts. They also usually have either a barrel cooling system, slow-heating heavyweight barrel, although subdivided into light, medium, heavy or general-purpose, even the lightest machine guns tend to be substantially larger and heavier than standard infantry arms. Medium and heavy guns are either mounted on a tripod or on a vehicle, when carried on foot. Medium machine guns use full-sized rifle rounds and are designed to be used from fixed positions mounted on a tripod. 50in, the M249 automatic rifle is operated by an automatic rifleman, but its ammunition may be carried by other Soldiers within the squad or unit. The M249 machine gun is a crew-served weapon, Machine guns usually have simple iron sights, though the use of optics is becoming more common. Many heavy machine guns, such as the Browning M2.50 caliber machine gun, are enough to engage targets at great distances. During the Vietnam War, Carlos Hathcock set the record for a shot at 7382 ft with a.50 caliber heavy machine gun he had equipped with a telescopic sight. This led to the introduction of.50 caliber anti-materiel sniper rifles, selective fire rifles firing a full-power rifle cartridge from a closed bolt are called automatic rifles or battle rifles, while rifles that fire an intermediate cartridge are called assault rifles. Unlocking and removing the spent case from the chamber and ejecting it out of the weapon as bolt is moving rearward Loading the next round into the firing chamber. Usually the recoil spring tension pushes bolt back into battery and a cam strips the new round from a feeding device, cycle is repeated as long as the trigger is activated by operator. Releasing the trigger resets the trigger mechanism by engaging a sear so the weapon stops firing with bolt carrier fully at the rear, the operation is basically the same for all autoloading firearms, regardless of the means of activating these mechanisms. Most modern machine guns use gas-operated reloading, a recoil actuated machine gun uses the recoil to first unlock and then operate the action. Machine guns such as the M2 Browning and MG42, are of this type, a cam, lever or actuator demultiplicates the energy of the recoil to operate the bolt
2.
Second Boer War
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The Second Boer War, usually known as the Boer War and also at the time as the South African War, started on 11 October 1899 and ended on 31 May 1902. Great Britain defeated two Boer states in South Africa, the South African Republic and the Orange Free State, Britain was aided by its Cape Colony, Colony of Natal and some native African allies. The British war effort was supported by volunteers from the British Empire, including Southern Africa, the Australian colonies, Canada, India. All other nations were neutral, but public opinion in them was largely hostile to Britain, inside Britain and its Empire there also was significant opposition to the Second Boer War. The British were overconfident and under-prepared, the Boers were very well armed and struck first, besieging Ladysmith, Kimberley, and Mafeking in early 1900, and winning important battles at Colenso, Magersfontein and Stormberg. Staggered, the British brought in numbers of soldiers and fought back. General Redvers Buller was replaced by Lord Roberts and Lord Kitchener and they relieved the three besieged cities, and invaded the two Boer republics in late 1900. The onward marches of the British Army were so overwhelming that the Boers did not fight staged battles in defense of their homeland, the British quickly seized control of all of the Orange Free State and Transvaal, as the civilian leadership went into hiding or exile. In conventional terms, the war was over, Britain officially annexed the two countries in 1900, and called a khaki election to give the government another six years of power in London. However, the Boers refused to surrender and they reverted to guerrilla warfare under new generals Louis Botha, Jan Smuts, Christiaan de Wet and Koos de la Rey. Two more years of attacks and quick escapes followed. As guerrillas without uniforms, the Boer fighters easily blended into the farmlands, which provided hiding places, supplies, the British solution was to set up complex nets of block houses, strong points, and barbed wire fences, partitioning off the entire conquered territory. The civilian farmers were relocated into concentration camps, where very large proportions died of disease, especially the children, then the British mounted infantry units systematically tracked down the highly mobile Boer guerrilla units. The battles at this stage were small operations with few combat casualties The war ended in surrender, the British successfully won over the Boer leaders, who now gave full support to the new political system. Both former republics were incorporated into the Union of South Africa in 1910, the conflict is commonly referred to as simply the Boer War, since the First Boer War is much less well known. Boer was the term for Afrikaans-speaking white South Africans descended from the Dutch East India Companys original settlers at the Cape of Good Hope. It is officially called the South African War and it is known as the Anglo-Boer War among some South Africans. In Afrikaans it may be called the Anglo-Boereoorlog, Tweede Boereoorlog, in South Africa it is officially called the South African War
3.
Russian Civil War
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The Russian Civil War was a multi-party war in the former Russian Empire immediately after the Russian Revolutions of 1917, as many factions vied to determine Russias political future. In addition, rival militant socialists and nonideological Green armies fought against both the Bolsheviks and the Whites, eight foreign nations intervened against the Red Army, notably the Allied Forces and the pro-German armies. The Red Army defeated the White Armed Forces of South Russia in Ukraine, the remains of the White forces commanded by Pyotr Nikolayevich Wrangel were beaten in Crimea and evacuated in late 1920. Lesser battles of the war continued on the periphery for two years, and minor skirmishes with the remnants of the White forces in the Far East continued well into 1923. Armed national resistance in Central Asia was not completely crushed until 1934, there were an estimated 7,000, 000–12,000,000 casualties during the war, mostly civilians. The Russian Civil War has been described by some as the greatest national catastrophe that Europe had yet seen, many pro-independence movements emerged after the break-up of the Russian Empire and fought in the war. Several parts of the former Russian Empire—Finland, Estonia, Latvia, Lithuania, the rest of the former Russian Empire was consolidated into the Soviet Union shortly afterwards. After the abdication of Tsar Nicholas II of Russia, the Russian Provisional Government was established during the February Revolution of 1917, Political commissars were appointed to each unit of the army to maintain morale and ensure loyalty. In June 1918, when it became apparent that an army composed solely of workers would be far too small. Former Tsarist officers were utilized as military specialists, sometimes their families were taken hostage in order to ensure their loyalty, at the start of the war three-quarters of the Red Army officer corps was composed of former Tsarist officers. By its end, 83% of all Red Army divisional and corps commanders were ex-Tsarist soldiers, a Ukrainian nationalist movement was active in Ukraine during the war. More significant was the emergence of an anarchist political and military movement known as the Revolutionary Insurrectionary Army of Ukraine or the Anarchist Black Army led by Nestor Makhno, some of the military forces were set up on the basis of clandestine officers organizations in the cities. The Czechoslovak Legions had been part of the Russian army and numbered around 30,000 troops by October 1917 and they had an agreement with the new Bolshevik government to be evacuated from the Eastern Front via the port of Vladivostok to France. The transport from the Eastern Front to Vladivostok slowed down in the chaos, under pressure from the Central Powers, Trotsky ordered the disarming and arrest of the legionaries, which created tensions with the Bolsheviks. The Western Allies armed and supported opponents of the Bolsheviks, hence, many of these countries expressed their support for the Whites, including the provision of troops and supplies. Winston Churchill declared that Bolshevism must be strangled in its cradle, the British and French had supported Russia during World War I on a massive scale with war materials. After the treaty, it looked like much of material would fall into the hands of the Germans. Under this pretext began allied intervention in the Russian Civil War with the United Kingdom, there were violent clashes with troops loyal to the Bolsheviks
4.
World War I
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World War I, also known as the First World War, the Great War, or the War to End All Wars, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. More than 70 million military personnel, including 60 million Europeans, were mobilised in one of the largest wars in history and it was one of the deadliest conflicts in history, and paved the way for major political changes, including revolutions in many of the nations involved. The war drew in all the worlds great powers, assembled in two opposing alliances, the Allies versus the Central Powers of Germany and Austria-Hungary. These alliances were reorganised and expanded as more nations entered the war, Italy, Japan, the trigger for the war was the assassination of Archduke Franz Ferdinand of Austria, heir to the throne of Austria-Hungary, by Yugoslav nationalist Gavrilo Princip in Sarajevo on 28 June 1914. This set off a crisis when Austria-Hungary delivered an ultimatum to the Kingdom of Serbia. Within weeks, the powers were at war and the conflict soon spread around the world. On 25 July Russia began mobilisation and on 28 July, the Austro-Hungarians declared war on Serbia, Germany presented an ultimatum to Russia to demobilise, and when this was refused, declared war on Russia on 1 August. Germany then invaded neutral Belgium and Luxembourg before moving towards France, after the German march on Paris was halted, what became known as the Western Front settled into a battle of attrition, with a trench line that changed little until 1917. On the Eastern Front, the Russian army was successful against the Austro-Hungarians, in November 1914, the Ottoman Empire joined the Central Powers, opening fronts in the Caucasus, Mesopotamia and the Sinai. In 1915, Italy joined the Allies and Bulgaria joined the Central Powers, Romania joined the Allies in 1916, after a stunning German offensive along the Western Front in the spring of 1918, the Allies rallied and drove back the Germans in a series of successful offensives. By the end of the war or soon after, the German Empire, Russian Empire, Austro-Hungarian Empire, national borders were redrawn, with several independent nations restored or created, and Germanys colonies were parceled out among the victors. During the Paris Peace Conference of 1919, the Big Four imposed their terms in a series of treaties, the League of Nations was formed with the aim of preventing any repetition of such a conflict. This effort failed, and economic depression, renewed nationalism, weakened successor states, and feelings of humiliation eventually contributed to World War II. From the time of its start until the approach of World War II, at the time, it was also sometimes called the war to end war or the war to end all wars due to its then-unparalleled scale and devastation. In Canada, Macleans magazine in October 1914 wrote, Some wars name themselves, during the interwar period, the war was most often called the World War and the Great War in English-speaking countries. Will become the first world war in the sense of the word. These began in 1815, with the Holy Alliance between Prussia, Russia, and Austria, when Germany was united in 1871, Prussia became part of the new German nation. Soon after, in October 1873, German Chancellor Otto von Bismarck negotiated the League of the Three Emperors between the monarchs of Austria-Hungary, Russia and Germany
5.
North Yemen Civil War
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The North Yemen Civil War was fought in North Yemen from 1962 to 1970 between royalist partisans of the Mutawakkilite Kingdom and supporters of the Yemen Arab Republic. The Imam escaped to the Saudi Arabian border where he rallied support from northern Shia tribes to retake power. On the royalist side Jordan and Saudi Arabia supplied military aid, both foreign irregular and conventional forces were involved. Egyptian President Gamal Abdel Nasser supported the republicans with as many as 70,000 Egyptian troops, despite several military actions and peace conferences, the war sank into a stalemate by the mid-1960s. The 1967 siege of Sanaa became the point of the war. The remaining republican Prime Minister succeeded in keeping control of Sanaa and by February 1968, clashes continued in parallel with peace talks between the sides, until in 1970, Saudi Arabia recognized the Republic, and a ceasefire came into effect. Egyptian military historians refer to the war in Yemen as their Vietnam, historian Michael Oren wrote that Egypts military adventure in Yemen was so disastrous that the imminent Vietnam War could easily have been dubbed Americas Yemen. Imam Ahmad bin Yahya inherited the Yemeni throne in 1948, in 1955, Iraq-trained Colonel Ahmad Thalaya led a revolt against him. Ahmad agreed, but demanded that his son, Muhammad al-Badr succeed him, Thalaya refused, preferring the kings half brother, the Emir Saif el Islam Abdullah, the 48-year-old Foreign Minister. While Abdullah began forming a new government, Ahmad opened the treasury coffers, after five days, the number of besiegers was reduced from 600 to 40. Ahmad then came out of the palace, wearing a mask and wielding a long scimitar. He slashed two sentries dead before exchanging the sword for a gun and leading his 150 guards onto the roof of the palace to begin a direct attack on the rebels. After 28 hours,23 rebels and one guard were dead. Abdullah was later reported executed, and Thalaya was publicly decapitated, in March 1958, al-Badr arrived in Damascus to tell Nasser of Yemens adherence to the UAR. However, Ahmad was to keep his throne and his power. In 1959 Ahmad went to Rome to treat his arthritis, rheumatism, heart trouble and, reportedly, upon his return, Ahmad swore to crush the agents of the Christians. He ordered the decapitation of one of his subjects and the amputation of the hand and right foot of 15 others. Al-Badr was only rebuked for his leniency, but the Yemeni radio stopped broadcasting army officers speeches, in June 1961, Ahmad was still recovering from an assassination attempt four months earlier, and moved out of the capital, Taiz, into the pleasure palace of Sala
6.
John Browning
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He is regarded as one of the most successful firearms designers of the 20th century, in the development of modern automatic and semi-automatic firearms, and is credited with 128 gun patents. He made his first firearm at age 13 in his fathers gun shop, Browning influenced nearly all categories of firearms design. He invented or made significant improvements to single-shot, lever-action, and slide-action, rifles and his most significant contributions were arguably in the area of autoloading firearms. He developed the first autoloading pistols that were reliable and compact by inventing the telescoping bolt, integrating the bolt and barrel shroud into what is known as the pistol slide. Brownings telescoping bolt design is now found on every modern semi-automatic pistol. Browning also made significant contributions to automatic cannon development, some of these arms are still manufactured, often with only minor changes in detail and cosmetics to those assembled by Browning or his licensees. His guns are some of the most copied guns in the world, Browning was a member of The Church of Jesus Christ of Latter-day Saints and served a two-year mission in Georgia beginning on March 28,1887. His father Jonathan Browning, who was among the thousands of Mormon pioneers in the exodus from Nauvoo, Illinois to Utah. John Moses worked in his fathers Ogden shop from the age of seven, where he was taught basic engineering and manufacturing principles, production examples of the Model 1885 Single Shot Rifle caught the attention of the Winchester Repeating Arms Company, who dispatched a representative to evaluate the competition. Winchester bought the design for $8,000 and moved production to their Connecticut factory, Winchester manufactured several popular small arms designed by John M. Browning. For decades in the late 19th Century-early 20th Century, Browning designs and Winchester firearms were synonymous, as was the custom of the time, Brownings earlier designs had been licensed exclusively to Winchester for a single fee payment. With this new product, Browning introduced in his negotiations a continuous royalty fee based upon unit sales, if the new shotgun became highly successful, Browning stood to make substantially more fee income over the prior license fee arrangements. Winchester management was displeased with the change in their relationship. Remington Arms was also approached, however the president of Remington died of an attack as Browning waited to offer them the gun. This forced Browning to look overseas to produce the shotgun, however, Remington would later produce a copy of the Auto-5 as the Model 11 which was used by the US Military and was also sold to the civilian market. The Browning Auto-5 was continuously manufactured as a highly popular throughout the 20th century. This shift marked the end of an era of Winchester-Browning collaboration, John Browning was known as a dedicated and tireless innovator and experimenter who sought breakthrough consumer-oriented features and performance and reliability improvements in small arms designs. He did not retire from his career in his elder years, but dedicated his entire adult life—literally to his last day—to these pursuits
7.
Colt's Manufacturing Company
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Colts Manufacturing Company is an American firearms manufacturer, founded in 1855 by Samuel Colt. It is the corporation to Colts earlier firearms-making efforts, which started in 1836. Colts earliest designs played a role in the popularization of the revolver. Although Samuel Colt did not invent the concept, his designs resulted in the first very successful ones. The most famous Colt products include the Colt Walker, made 1847 in the facilities of Eli Whitney Jr. Though they did not develop it, for a long time Colt was also responsible for all AR-15 and M16 rifle production. The most successful and famous of these are numerous M16 carbines, including the Colt Commando family, in 2002, Colt Defense was split off from Colts Manufacturing Company. Colts Manufacturing Company now serves the market, while Colt Defense serves the law enforcement, military. The two companies remained in the same West Hartford, Connecticut location cross-licensing certain merchandise before reuniting in 2013, following the loss of its M4 contract in 2013, Colt was briefly in Chapter 11 Bankruptcy, starting in 2015. Samuel Colt received a British patent on his design for a revolver in 1835. That same year, he founded his first corporation for its manufacture, the first firearm manufactured at the new Paterson plant, however, was the Colt First Model Ring Lever rifle beginning in 1837. This was followed thereafter in late 1837 by the introduction of the Colt Paterson. This corporation suffered quality problems in production, making firearms with interchangeable parts was still rather new, and it was not yet easy to replicate across different factories. Interchangeability was not complete in the Paterson works, and traditional gunsmithing techniques did not fill the gap entirely there, the Colt Paterson revolver found patchy success and failure, some worked well, while others had problems. The United States Marine Corps and United States Army reported quality problems with these earliest Colt revolvers, production had ended at the New Jersey corporation by 1842. Colt made another attempt at revolver production in 1846 and submitted a prototype to the US government, during the Mexican–American War, this prototype was seen by Captain Samuel Hamilton Walker who made some suggestions to Colt about making it in a larger caliber. Having no factory or machinery to produce the pistols, Samuel Colt collaborated with the Whitney armory of Whitneyville and this armory was run by the family of Eli Whitney. Eli Whitney Jr, the son of the patriarch, was the head of the family armory
8.
Marlin Firearms
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Marlin Firearms Co. formerly of North Haven, Connecticut, is a manufacturer of semi-automatic, lever-action, and bolt-action rifles. In the past, the company made shotguns, derringers and revolvers, Marlin owned the firearm manufacturer H&R Firearms. In 2007, Remington Arms, part of the Freedom Group, Remington currently produces Marlin-brand firearms at its Kentucky and New York manufacturing facilities. Major models of Marlin rifles include, Marlin No, Marlin Model 1893, lever action repeater, precursor of the Model 36 and 336 Marlin Model 1895 Military Repeater,6 versions,1895, G, GBL, GS, M, SBL. All are chambered for the 45/70 caliber except for the M Marlin Model 444, Marlin Model 795, a.22 LR semi-automatic rifle. For example, there are 6 distinctly different variations manufactured for the Marlin Model 60, Marlin has been making lever-action rifles since 1881, and in 2008, they produced their 30 millionth lever-action rifle, which was donated to the National Rifle Association. Shotguns include, Marlin Model 25MG, a bolt action. S, patent 3,100,358 for what was named MicroGroove Rifling, which was a departure from the standard Ballard, or cut rifling. One purpose of Microgroove rifling was to increase the speed of producing rifle barrels, Marlin introduced Microgroove rifling in their.22 rimfire barrels in July 1953, with 16 grooves that were.014 wide, and nominally.0015 deep. Ballard rifled barrels have grooves generally in the range of. 069-.090 wide, the catalog also claimed that Microgroove rifling did not distort the bullet jacket as deeply as Ballard rifling hence improving accuracy with jacketed bullets at standard velocity. The use of oversized cast bullets greatly solves this problem, restoring accuracy with cast bullet handloads to levels seen from Ballard rifled barrels, Marlin Firearms was founded in the 1870s by John Marlin. Marlin produced lever-action rifles and pump-action shotguns in competition with Winchester, in 1917 Marlin Rockwell bought out the Hopkins & Allen Arms Company to promote an expanded line of firearms and restore the image of the Marlin company as makers of sporting arms. Marlin Firearms labored for a century as an underdog levergun maker to Winchester, however, in the 1980s and 1990s, Marlin finally began to outpace its old rival. It is currently the dominant seller of lever-action rifles in North America and its use of side ejection allows for flat-topped firearms, thereby making the mounting of scopes easier than for traditional Winchesters. This helped Marlin capture more market share as American shooters came to more and more on optics. Marlins are larger, stronger and heavier than most of the comparable Winchester line, in November 2000, Marlin purchased the assets of H&R1871, Inc. a Massachusetts-based manufacturer of shotguns and rifles, founded in 1871, and now located in Gardner, Massachusetts. Marketing its products under the names of Harrington & Richardson and New England Firearms, H&R1871 claimed to be the largest manufacturer of Single-shot shotguns. In December 2007 Remington Arms Company purchased Marlin, Remington announced in April 2008 that it would close the Gardner manufacturing plant by the end of 2008 affecting 200 workers. In March 2010, Marlin announced that it would close its North Haven plant, and move the work to Remington plants in Ilion, New York, and Mayfield, Kentucky
9.
Gun barrel
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A gun barrel is a part of firearms and artillery pieces. The hollow interior of the barrel is called the bore, a gun barrel must be able to hold in the expanding gas produced by the propellants to ensure that optimum muzzle velocity is attained by the projectile as it is being pushed out by the expanding gas. Modern small arms barrels are made of known and tested to withstand the pressures involved. Artillery pieces are made by various techniques providing reliably sufficient strength, early firearms were muzzle-loading, with powder, and then shot loaded from the muzzle, capable of only a low rate of fire. During the 19th century effective mechanical locks were invented that sealed a breech-loading weapon against the escape of propellant gases, the early Chinese, the inventors of gunpowder, used bamboo, a naturally tubular stalk, as the first barrels in gunpowder projectile weapons. Early European guns were made of iron, usually with several strengthening bands of the metal wrapped around circular wrought iron rings. The Chinese were the first to master cast-iron cannon barrels, early cannon barrels were very thick for their caliber. Bore evacuator Bore snake Cannon Muzzle Polygonal rifling Rifling Slug barrel Smoothbore
10.
Cartridge (firearms)
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Military and commercial producers continue to pursue the goal of caseless ammunition. A cartridge without a bullet is called a blank, One that is completely inert is called a dummy. Some artillery ammunition uses the same concept as found in small arms. In other cases, the shell is separate from the propellant charge. In popular use, the bullet is often misused to refer to a complete cartridge. The cartridge case seals a firing chamber in all directions excepting the bore, a firing pin strikes the primer and ignites it. The primer compound deflagrates, it does not detonate, a jet of burning gas from the primer ignites the propellant. Gases from the burning powder pressurize and expand the case to seal it against the chamber wall and these propellant gases push on the bullet base. In response to pressure, the bullet will move in the path of least resistance which is down the bore of the barrel. After the bullet leaves the barrel, the pressure drops to atmospheric pressure. The case, which had been expanded by chamber pressure. This eases removal of the case from the chamber, brass is a commonly used case material because it is resistant to corrosion. A brass case head can be work-hardened to withstand the pressures of cartridges. The neck and body portion of a case is easily annealed to make the case ductile enough to allow reforming so that it can be reloaded many times. Steel is used in some plinking ammunition, as well as in military ammunition. Steel is less expensive than brass, but it is not feasible to reload, Military forces typically consider small arms cartridge cases to be disposable, one-time-use devices. However, case weight affects how much ammunition a soldier can carry, conversely, steel is more susceptible to contamination and damage so all such cases are varnished or otherwise sealed against the elements. One downside caused by the strength of steel in the neck of these cases is that propellant gas can blow back past the neck
11.
6mm Lee Navy
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The 6mm Lee Navy, also known as the 6mm U. S. N. Or.236 Navy, is an obsolete American rifle cartridge, the 6mm Lee Navy was in turn replaced by the.30 Army cartridge in 1899. By 1894, the U. S. Navy desired to adopt a modern small-bore, smokeless powder service cartridge, Naval authorities decided that the new cartridge should be adaptable to both rifles and machine guns. Noting that the military forces were adopting smaller and smaller caliber rifles with higher velocity cartridges. The government notice of bid requirements said no other calibers or cartridges would be considered, Winchester made the ammunition for the government, which in turn provided each competitor with 6 mm U. S. N. Cartridges and 0. 236-inch caliber rifle barrels, the latter supplied unchambered, the rifle action was required to withstand the firing of five overpressure cartridges with a chamber pressure of 60,000 psi. Several inventors and rifle manufacturers submitted models for testing, among them James Paris Lee, the Lee straight-pull won in repeated trials and the U. S. Navy adopted the round in 1895 as the Lee Rifle, Model of 1895, caliber 6-mm. As adopted by the Navy after tests at the Naval Torpedo Station, Cartridge featured a long, bottle-necked semi-rimmed brass case and a 135-grain round-nosed, cupro-nickel coated, steel-jacketed, lead-core bullet. The initial version utilized a 135-grain steel-jacketed lead core bullet with 2. 35-in, long case and 0. 517-inch rim, with a bullet diameter of 0.244 inches. The rifle powder for the new cartridge was Rifleite, a flake nitrocellulose smokeless powder originally developed for use in the British.303 cartridge, the new 6 mm cartridge achieved a muzzle velocity of 2,550 fps and was initially manufactured by Winchester for the Navy. After the adoption of the M1895 Lee, the rim of the government cartridge was redesigned with a slight bevel for optimum performance in the en bloc charger-loaded magazine of the M1895 rifle. The revised cartridge was designated the 6 mm U. S. N, but continued to be referred to in naval stores reports as the Ball Cartridge,6 mm. In March 1897, after reports of excessive chamber pressures and short barrel life despite the use of 4. The new M1895 Colt–Browning machine gun was modified to accept the new 112-grain loading the same year. Firing a 112-grain bullet at 2,560 ft/s from a 28 in barrel, the 112-grain roundnosed bullet had a flatter trajectory than its 135-grain predecessor at all ranges up to 500 yards, above this distance, the heavier bullet began to show an advantage. The new loading had a range of around 600-700 yards, at which point the blunt-tip bullet rapidly lost velocity. The 112-grain bullet, like its predecessor, demonstrated an inclination to instability unless rapidly rotated, the M1895 Lee rifle therefore received a rapid barrel rifling twist of one turn in 7.5 inches to keep the bullet from wobbling or tumbling at extended ranges. At some point, this rifling was changed in later production rifles to one turn in 10 inches RH
12.
.30-40 Krag
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Since the cartridge it was replacing was the. 45-70 Government, the round was considered small-bore at the time. The design selected was ultimately the Krag–Jørgensen, formally adopted as the M1892 Springfield and it was also used in M1893 and later Gatling guns. After a brief experiment with a 230-grain bullet loading, the.30 Army loading was standardized in 1894 using a 220-grain metal-jacketed round-nose bullet with 40 grains of nitrocellulose powder. This loading developed a velocity of 2,000 ft/s in the 30-inch barrel of the Krag rifle. The rimmed. 30-40 round was known as.30 Army. The first use of a smokeless powder round by Winchester was a shot in 30-40. From the outset, the. 30-40 cartridge proved popular for hunting, in 1899, a Krag in. 30-40 caliber was used to shoot the world-record Rocky Mountain elk. The record stood until the half of the 20th century. The new loading increased the velocity in the rifle version of the Krag to 2,200 ft/s at 45,000 psi. However, once the new loading was issued, reports of cracked locking lugs on service Krags began to surface, in March 1900 the remaining stocks of this ammunition were returned to the arsenals, broken down, and reloaded back to the original 2,000 ft/s specification. In 1903, after recommendations from the infantry Small Arms Board, the new cartridge was designated by its year of adoption, the. 30-03. Handbook of the Gatling Gun, Caliber.30
13.
.30-06 Springfield
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The.30 refers to the caliber of the bullet, and the 06 refers to the year the cartridge was adopted—1906. It replaced the. 30-03, 6mm Lee Navy, and. 30-40 Krag cartridges and it remains a very popular sporting round, with ammunition produced by all major manufacturers. In the early 1890s, the U. S. military adopted the smokeless powder. 30-40 Krag rimmed cartridge, the 1894 version of that cartridge used a 220-grain round-nose bullet. Around 1901, the U. S. started developing an experimental rimless cartridge for a Mauser action with box magazine and that led to the 1903. 30-03 rimless service round that used the same 220-grain round-nose bullet as the Krag. The. 30-03 achieved a velocity of 2,300 ft/s. Consequently, the round-nosed U. S. 30-03 service cartridge was falling behind. For these reasons, the U. S. military developed a new, lighter, cartridge in 1906, the cartridge was loaded with Military Rifle 21 propellant, and its maximum range was claimed to be 4,700 yd. The M1903 Springfield rifle, which had been introduced alongside the. 30-03 cartridge, was modified to accept the new. 30-06 Springfield cartridge. Modifications to the rifle included shortening the barrel at its breech and resizing the chamber, other changes to the rifle included elimination of the troublesome rod bayonet of the earlier Springfield rifles. The M1906 maximum range was originally overstated, when the M1906 cartridge was developed, the range tests had been done to only 1,800 yards, distances beyond that were estimated, but the estimate for extreme range was wrong by almost 40 percent. The range discrepancy became evident during World War I, before the widespread employment of light mortars and artillery, long-range machine gun barrage or indirect fires were considered important in U. S. infantry tactics. When the US entered World War I, it did not have machine guns, so it acquired British. When those weapons were replaced with US machine guns firing the M1906 round. Firing tests performed around 1918 at Borden Brook Reservoir, Miami, patrone was inroduced in 1914 and used a 197. 5-grain s. S. - schweres Spitzgeschoß boat-tail bullet which had a maximum range of approximately 5,140 yd. Its maximum range was approximately 5,500 yd. Additionally, wartime surplus totaled over 2 billion rounds of ammunition. Army regulations called for training use of the oldest ammunition first, as a result, the older. 30-06 ammunition was expended for training, stocks of.30 M1 Ball ammunition were allowed to slowly grow until all of the older M1906 ammunition had been fired. By 1936, it was discovered that the range of the.30 M1 Ball ammunition with its boat-tailed spitzer bullets was beyond the safety limitations of many ranges. An emergency order was made to manufacture quantities of ammunition that matched the ballistics of the earlier M1906 cartridge as soon as possible
14.
.303 British
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The.303 British or 7. 7×56mmR, is a. 303-inch calibre rimmed rifle cartridge first developed in Britain as a black-powder round put into service in December 1888 for the Lee–Metford rifle. In 1891 the cartridge was adapted to use smokeless powder and it was the standard British and Commonwealth military cartridge from 1889 until the 1950s when it was replaced by the 7. 62×51mm NATO. The.303 British has 3.64 ml cartridge case capacity, americans would define the shoulder angle at alpha/2 ≈17 degrees. The common rifling twist rate for this cartridge is 254 mm,5 grooves, Ø lands =7.70 millimetres, Ø grooves =7.92 millimetres, land width =2.12 millimetres and the primer type is Berdan or Boxer. Rulings the.303 British can handle up to 365.00 MPa Pmax piezo pressure, regulated countries every rifle cartridge combo has to be proofed at 125% of this maximum C. I. P. pressure to certify for sale to consumers. This means that.303 British chambered arms in C. I. P, regulated countries are currently proof tested at 456.00 MPa PE piezo pressure. The SAAMI Maximum Average Pressure for this cartridge is 49,000 psi piezo pressure, the measurement. 303-inch is the nominal size of the bore measured between the lands which follows the older black powder nomenclature. Measured between the grooves, the size of the bore is. 311-inch. Bores for many.303 military surplus rifles are found ranging from around. 309-inch up to. 318-inch. Recommended bullet diameter for standard.303 British cartridges is. 312-inch, the bolt thrust of the.303 British is relatively low compared to many other service rounds used in the early 20th century. The original.303 British service cartridge employed black powder as a propellant, and was adopted for the Lee–Metford rifle, ballistite was a stick-type smokeless powder composed of soluble nitrocellulose and nitroglycerine. Unlike Cordite, Riflelite was a powder, and contained no nitroglycerine. After extensive testing, the Committee on Explosives selected Cordite for use in the Mark II.303 British service cartridge, the initial.303 Mark I and Mk II service cartridges employed a 215-grain, round-nosed, copper-nickel full-metal-jacketed bullet with a lead core. After tests determined that the bullet had too thin a jacket when used with cordite. This led to the introduction of the Cartridge S. A. Ball.303 inch Cordite Mark III, similar hollow-point bullets were used in the Mk IV and Mk V loadings, which were put into mass production. The design of the Mk IV hollow-point bullet shifted bullet weight rearwards, improving stability, the remaining stocks were used for target practice. The concern about expanding bullets was brought up at the 1899 Hague Convention by Swiss, the British and American defense was that they should not focus on specific bullet designs, like hollow-points, but instead on rounds that caused superfluous injury. The parties in the end agreed to abstain from using expanding bullets, as a result, the Mark III and other expanding versions of the.303 were not issued during the Second Boer War
15.
Action (firearms)
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In firearms terminology, an action is the mechanism that handles the ammunition or the method by which that mechanism works. Breech-loading weapons have actions, actions are not present on muzzleloaders. The mechanism that fires a muzzle-loader is called the lock, actions can be categorized in several ways, including single action versus double action, break action versus bolt action, and others. The term action can also short, long, and magnum if it is in reference to the length of the rifle’s receiver. The short action rifle usually can accommodate a cartridge length of 2.8 in or smaller, the long action rifle can accommodate a cartridge of 3.34 in, and the magnum action rifle can accommodate cartridges of 3.6 in, or longer in length. Manual operation is a term describing any type of firearm action that is loaded one shot at a time by the user rather than automatically. For example, break action is a form of operation using a simple hinge mechanism that is manually unlatched by the operator. These are actions wherein the breechblock lowers or drops into the receiver to open the breech, there are two principal types of dropping block, the tilting block and the falling block. In a tilting or pivoting block action, the breechblock is hinged on a pin mounted at the rear, when the lever is operated, the block tilts down and forward, exposing the chamber. The best-known pivoting block designs are the Peabody, the Peabody–Martini, the original Peabody rifles, manufactured by the Providence Tool Company, used a manually cocked side-hammer. The 1871 Martini–Henry which replaced the trapdoor Snider–Enfield was the standard British Army rifle of the later Victorian era, charles H. Ballards self-cocking tilting-block action was produced by the Marlin Firearms Company from 1875, and earned a superlative reputation among long-range Creedmoor target shooters. Surviving Marlin Ballards are today highly prized by collectors, especially those mounted in the elaborate Swiss-style Schützen stocks of the day. A falling-block action is a firearm action in which a solid metal breechblock slides vertically in grooves cut into the breech of the weapon. Examples of firearms using the falling block action are the Sharps rifle, in a rolling block action the breechblock takes the form of a part-cylinder, with a pivot pin through its axis. The operator rotates or rolls the block to open and close the breech, it is a simple, rugged, a break action is a type of firearm where the barrel are hinged and can be broken open to expose the breech. The earliest metallic-cartridge breechloaders designed for military issue began as conversions of muzzle-loading rifle-muskets. The upper rear portion of the barrel was filed or milled away, an internal angled firing pin allowed the re-use of the rifles existing side-hammer. The Allin action made by Springfield Arsenal in the US hinged forward, france countered in 1866 with its superior Chassepot rifle, also a paper-cartridge bolt action
16.
Gas-operated reloading
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Gas-operation is a system of operation used to provide energy to operate autoloading firearms. In gas operation, a portion of high-pressure gas from the cartridge being fired is used to power a mechanism to extract the spent case, energy from the gas is harnessed through either a port in the barrel or a trap at the muzzle. Most current gas systems employ some type of piston, the face of the piston is acted upon by combustion gas from a port in the barrel or a trap at the muzzle. Early guns such as Brownings flapper prototype, the Bang rifle and this, combined with more massive operating parts, reduced the strain on the mechanism. To simplify and lighten the firearm, gas from nearer the chamber needed to be used and this high pressure and has sufficient force to destroy a firearm unless it is regulated somehow. Most gas-operated firearms rely on tuning the gas port size, mass of operating parts, several other methods are employed to regulate the energy. The M1 carbine incorporates a short piston, or tappet. This movement is restricted by a shoulder recess. Excess gas is then vented back into the bore, the M14 rifle and M60 GPMG use the White expansion and cutoff system to stop gas from entering the cylinder once the piston has traveled a short distance. Most systems, however, vent excess gas into the atmosphere through slots, holes, a gas trap system involves trapping combustion gas as it leaves the muzzle. This gas impinges on a surface that converts the energy to motion that, hiram Maxim patented a muzzle-cup system in 1884 described in U. S. Patent 319,596 though it is if this firearm was ever prototyped. John Browning used gas trapped at the muzzle to operate a flapper in the earliest prototype gas-operated firearm described in U. S, the Danish Bang rifle used a muzzle cup blown forward by muzzle gas to operate the action through transfer bars and leverage. Other gas-trap rifles were early production US gas-trap M1 Garands, German Gewehr 41 and these systems are longer, heavier, dirtier and more complex than later gas-operated firearms. Despite these disadvantages, they used relatively low gas and did not require a hole in the barrel. The American and German governments both had requirements that their guns operated without a hole being drilled in the barrel, both governments would first adopt weapons and later abandon the concept. All US M1 Garand rifles were retrofitted with long-stroke gas pistons, with a long-stroke system, the piston is mechanically fixed to the bolt group and moves through the entire operating cycle. This system is used in such as the Bren light machine gun, AK-47, Tavor, FN Minimi, M249 Squad Automatic Weapon, FN MAG, FN FNC
17.
Lever action
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Lever action is a type of firearm action which uses a lever located around the trigger guard area to load fresh cartridges into the chamber of the barrel when the lever is worked. This contrasts to bolt-action, semi-automatic, or selective-fire weapons, most lever-action firearms are rifles, but some lever-action shotguns and a few pistols have also been made. One of the most famous lever-action firearms is the Winchester Model 1873 rifle, even Colts Mfg. Co. produced 1883 until 18856403 lever-action Colt-Burgess rifles. Mossberg produces the 464 in centerfire. 30-30 and rimfire.22, probably the first lever-action rifles on the market were Colts 1st and 2nd Model Ring Lever rifles, both Cap and ball rifles, produced by the Patent Arms Mfg. Co. Paterson, N. J. -Colts Patent between 1837 and 1841, the ring-lever was located in front of the trigger. This loading-lever, when pulled, would index the cylinder to the next position, the first significant lever-action design was the Spencer repeating rifle, a magazine-fed lever-operated breech-loading rifle designed by Christopher Spencer in 1860. It was fed from a removable seven-round tube magazine, enabling the rounds to be fired one after another, and which, the Henry also placed the magazine under the barrel, rather than in the butt-stock, a trend followed by most tubular magazines since. The Martini–Henry rifle was the rifle of British and Empire forces from the early 1870s to the turn of the 20th century. It was used in areas, either by civilians or by the local military. Variants copying the Martini–Henry mechanism but using more modern cartridges were also produced, john Marlin, founder of Marlin Firearms Company, New Haven, Connecticut, introduced Marlins first lever-action repeating rifle as the Model 1881. This was chambered in rounds such as the 45/70 and 38/55 and its successor was the 1895 solid top design, which we know as the model 336 today. It also gave rise to the Marlin Model 1894, which is still in production today, by the 1890s, lever-actions had evolved into a form that would last for over a century. Both Marlin and Winchester released new model lever-action rifles in 1894, the Marlin rifle is still in production, whereas production of the Winchester 94 ceased in 2006. While externally similar, the Marlin and Winchester rifles are quite different internally, the fledgling Savage Arms Company became well known after the development of its popular hammerless Models 1895 and 1899 lever-action sporting rifles. Unlike most Winchester and the Marlin lever-action rifles, which used a tubular magazine requiring round-nose or flat-nose bullets and this allowed the 99 to use cartridges with spitzer pointed bullets for increased ballistic performance. The 99 was produced in different cartridges and several different model variations. The final models eliminated the very expensive-to-produce rotary magazine, using a box magazine instead. But the 99 was still expensive to produce when compared to the other lever-action rifles
18.
Belt (firearms)
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Shot belt or ammunition belt can also refer to a belt that a person wears, with loops for inserting ammunition cartridges. For the term belt as applied to cartridges, see rim or belted magnum, a belt or ammunition belt is a device used to retain and feed cartridges into a firearm. Belts and the associated feed systems are employed to feed machine guns or other automatic weapons. Belt-fed systems minimize the weight of the ammunition to the feeding device along with allowing high rates of continuous fire. Arguably, precursors to the machine gun were the Cass rifle, patented in 1848. Belts were originally composed of canvas or cloth with pockets spaced evenly to allow the belt to be fed into the gun. These designs were prone to malfunctions due to the effects of oil, later belt designs used permanently connected metal links to retain the cartridges during feeding. These belts were more tolerant to exposure to solvents and oil, many weapons designed to use non-disintegrating or canvas belts are provided with machines to automatically reload these belts with loose rounds or rounds held in stripper clips. In use during World War I, reloaders allowed ammunition belts to be recycled quickly to allow practically continuous fire, many modern ammunition belts use disintegrating links. Disintegrating links retain a single round and are articulated with the round ahead of it in the belt. When the round ahead is stripped from the belt and fed into the system or chamber, the link holding it is ejected. Modern infantry machine guns often have feed systems allowing the use of linked ammunition or other forms of feed like magazines or drums, in some instances—like the FN MINIMI/M249 SAW and the IMI Negev—the feed system requires no modification to fire with either mechanism. Other designs—like the Heckler and Koch HK21-based designs or MG34—require the exchange of parts to allow belt or alternate feeding. Due to the lack of protection provided by the belt, belt-fed infantry weapons typically use a flexible or rigid container to retain the belt on the weapon, in some designs—like the MG3—the belt container appears to be a magazine causing some confusion to people unfamiliar with the design. The capacity of belts and carriers is typically a function of weight and their size is limited by caliber and the portability of the combined weapon and ammunition. The most common sizes typically carried on a man-portable weapon run from 50 to 300 rounds, found on mostly early machine guns. The pull out - push through cartridge feed system has the cartridge withdrawn from the belt to the rear, examples are the Darne mle 1922, Browning 1919, Browning M2HB, Maxim and Vickers. Found on mostly modern machine guns, the push through cartridge feed system has the cartridge pushed directly forward into the barrel
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Australia
Canada
Spain
Czechoslovakia
France
Kingdom of Italy
Mexico
Mutawakkilite Kingdom of Yemen[21]
Philippine Rebublic
Poland
Romania[22]
Russian Empire: 14,850 M1895/1914s were purchased[23]
Finland[24]
Uruguay
United Kingdom
United States
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