1.
Revolver
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A revolver is a repeating handgun that has a revolving cylinder containing multiple chambers and at least one barrel for firing. Revolvers might be regarded as a subset of pistols, or as a subset of handguns. Though the term revolver usually only refers to handguns, other firearms may also have a revolving chamber and these include some models of grenade launchers, shotguns, and rifles. Most revolvers contain five or six rounds in the cylinder, though the original name was revolving gun, the short-hand revolver is universally used. The revolver allows the user to fire multiple rounds without reloading, each time the user cocks the hammer, the cylinder revolves to align the next chamber and round with the hammer and barrel, which gives this type of firearm its name. In a single-action revolver, the user pulls the back with his free hand or thumb. In a double-action revolver, pulling the trigger moves the back, then releases it. Loading and unloading a double-action revolver requires the operator to swing out the cylinder and insert the proper ammunition, the first guns with multichambered cylinders that revolved to feed one barrel were made in the late 16th century in Europe. They were expensive and rare curiosities, not until the 19th century would revolvers become common weapons of industrial production. One of the first was a flintlock revolver patented by Elisha Collier in 1814, the first percussion revolver was made by Lenormand of Paris in 1820 and the first percussion cap revolver was invented by the Italian Francesco Antonio Broccu in 1833. He received a prize of 300 francs for his invention, although he did not patent it, however, in 1835 a similar handgun was patented by Samuel Colt, who would go on to make the first mass-produced revolver. The first cartridge revolvers were produced around 1854 by Eugene Lefaucheux, revolvers soon became standard for nearly all uses. In the early 20th century, semi-automatic pistols were developed, which can hold more rounds, Automatic pistols also have a flat profile, more suitable for concealed carry. Automatic pistols have almost completely replaced revolvers in military and law enforcement use, revolvers still remain popular as back-up and off-duty handguns among American law enforcement officers and security guards. Also, revolvers are still common in the American private sector as defensive, in the development of firearms, an important limiting factor was the time it took to reload the weapon after it was fired. While the user was reloading, the weapon was useless, several approaches to the problem of increasing the rate of fire were developed, the earliest being multi-barrelled weapons which allowed two or more shots without reloading. Later weapons featured multiple barrels revolving along a single axis, the earliest examples of what today is called a revolver were made in Germany in the late 16th century. These weapons featured a barrel with a revolving cylinder holding the powder
2.
Sturm, Ruger & Co.
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Sturm, Ruger & Co. Inc. is an American, Southport, Connecticut–based firearm manufacturing company, better known by the shortened name Ruger. The company was founded in 1949 by Alexander McCormick Sturm and William B, Ruger and has been publicly traded since 1969. Ruger produces bolt-action, semi-automatic, and single-shot rifles, shotguns, semi-automatic pistols, Sturm, Ruger & Company was founded by William B. Ruger and Alexander McCormick Sturm in 1949 in a small rented shop in Southport. Ruger is a dominant manufacturer in the.22 LR rimfire rifle market in the U. S. due primarily to the sales of its Ruger 10/22 semiautomatic rifle, the 10/22 is very popular due to being relatively inexpensive and of good quality. As a result, a wealth of after-market accessories and parts were available for it. The availability and variety of after-market parts makes it possible to build a 10/22 using only these parts, Ruger similarly dominates the.22 rimfire semi-automatic pistol market with the Ruger MK II and Ruger MK III, descendants of the Ruger Standard pistol. Like the 10/22, the MkII is supported with a variety of after-market accessories. The 22/45 is similar to the Ruger Standard family of pistols but features a different grip angle, Ruger Casting has plants in Newport, New Hampshire and Prescott, Arizona, making ferrous, ductile iron and commercial titanium castings. Ruger Golf makes steel and titanium castings for golf clubs made by a number of different brands, Sturm, Ruger stock has been publicly traded since 1969, and became a New York Stock Exchange company in 1990. After Alex Sturm’s death in 1951, William B, Ruger continued to direct the company until his death in 2002. From 1949 through 2004, Ruger manufactured over 20 million firearms, and currently offers models for hunting, target shooting, self-defense, collecting, and law enforcement. Sturm, Ruger & Co. is headquartered in Southport, Connecticut, and maintains manufacturing facilities in Newport, New Hampshire, Prescott, Arizona, and Mayodan, North Carolina. Rugers subsidiaries are Ruger Precision Metals LLC in Earth City, Missouri, Pine Tree Castings in Newport, New Hampshire, and Ruger Sportswear & Accessories in Mayodan, North Carolina. Of the total 2,288 makers of civilian firearms operating in the United States from 1986–2010, Ruger was ranked the number one U. S. firearms manufacturer from 2008–2011. In 2011, Ruger manufactured 1,114,687 firearms, as their promotion, the company has set a new goal of 2 million firearms produced per year. From 2009 to 2012, Ruger was the top-seller of handguns, list of modern armament manufacturers TALO Distributors Wilson, R. L. Ruger & His Guns, A History of the Man, the Company and Their Firearms. Sturm, Ruger & Co official site Ruger Official History
3.
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
4.
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
5.
.22 Long Rifle
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The.22 Long Rifle rimfire cartridge is a long-established variety of ammunition, and in terms of units sold is still by far the most common in the world today. The cartridge is often referred to simply as.22 LR and various rifles, pistols, revolvers, and even some smoothbore shotguns have been manufactured in this caliber. American firearms manufacturer J. Stevens Arms & Tool Company introduced the cartridge in 1887 by combining the casing of the.22 Long with the 40-grain bullet of the.22 Extra Long. The round owes its origin to the Flobert BB cap of 1845 through the.22 Smith & Wesson cartridge of 1857 and it is one of the few cartridges that are accepted by a large variety of rifles, as well as pistols. The.22 Long Rifle and related cartridges use a bullet, which means that the bullet is the same diameter as the case. Low cost, minimal recoil, and relatively low noise make the.22 LR an ideal cartridge for recreational shooting, initial training, small-game hunting. Used by Boy Scouts for the rifle shooting merit badge, the cartridge is popular among novice shooters, a wide variety of rimfire ammunition is available commercially, and the available ammunition varies widely both in price and performance. Bullet weights among commercially available range from 20 to 60 grains. Promotional loads for plinking can be purchased in bulk for significantly less cost than precision target rounds, the low cost of ammunition has a substantial effect on the popularity of the.22 LR. For this reason, rimfire cartridges are used for target practice. The low recoil of the cartridge makes it ideal for introductory firearms courses, novice shooters can be surprised or frightened by the recoil of more powerful rounds. Beginners shooting firearms beyond their comfort level frequently develop a habit of flinching in an attempt to counter anticipated recoil, the resulting habit impedes correct posture and follow-through at the most critical phase of the shot and is difficult to correct. With high recoil eliminated, other errors in marksmanship technique are easier to identify, available for this round are AR-15 upper receivers and M1911 slide assemblies. Many handgun manufacturers have an upper pistol conversion kit to make it shoot.22 ammunition and these rimfire conversions allow shooters to practice inexpensively while retaining the handling characteristics of their chosen firearms. Additionally.22 conversion kits allow practice at indoor ranges which prohibit high-power firearms, annual production is estimated by some at 2–2.5 billion rounds. The NSSF estimates that half of the US production of 10 billion cartridges is composed of. 22LR, performance varies between barrel length and the type of action. For example, bolt-action rifles may perform differently from semiautomatic rifles, the.22 LR is effective to 150 yd, though practical ranges tend to be less. After 150 yd, the ballistics of the round are such that it will be difficult to compensate for the large drop, the relatively short effective range, low report, and light recoil has made it a favorite for use as a target-practice cartridge
6.
.22 Winchester Magnum Rimfire
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The.22 Winchester Magnum Rimfire, more commonly called.22 WMR.22 Magnum, or simply.22 Mag, is a rimfire cartridge. More recently, a high-quality 30gr Vmax cartridge from Hornady has been released and this exceeds 2200fps in a rifle and has a reputation for much greater consistency and accuracy than was previously attributed to this calibre. The.22 WMR was introduced in 1959 by Winchester, but was not used by Winchester until the Winchester Model 61 slide rifle could be chambered for it in 1960. By that time, Smith & Wesson and Ruger had revolvers for it, and Savage had come out with the Model 24 and since late 2012, the model 42, a modern update than the 24. It was the only successful rimfire cartridge introduced in the 20th Century, the.22 WMR uses a larger case than the more popular.22 Long Rifle, both in diameter and length. The.22 WMR case is a version of the older.22 WRF. The combination of powder and higher sustained pressures gives velocities over 2,000 feet per second from a rifle using a 30-grain bullet. Since the.22 WMR generally uses the same bullets as the.22 Long Rifle. If sighted in for maximum point blank range on a 3-inch high target and this makes the.22 WMR an effective short to medium range varmint rifle cartridge. The relatively quiet report and negligible recoil also make it a very pleasant round to shoot for extended periods. The.22 WMR can take down small game such as rabbits, groundhogs, prairie dogs, foxes, racoons and it first appeared in the Savage Model 24 combination rifle, followed by Winchesters own Model 61 pump-action rifle and Model 255 lever-action rifle. A number of single-shot and repeating rifles were offered in.22 WMR, the.22 WMR operates at pressures beyond what normal blowback actions typically handle, but the self-loading Jefferson Model 159 was introduced for the cartridge. Until the 1990s, most.22 WMR firearms were bolt-action rifles, in 1977-1985 Harrington & Richardson produced the first American-made semi-automatic.22 WMR. Revolvers in.22 WMR are made by Smith & Wesson, Taurus, North American Arms, Heritage Arms, semi-automatic pistols for this cartridge are produced by Kel-Tec, Grendel and AMT, the latter two now defunct. High-Standard produced various models and versions of their classic two-shot over/under derringer in both.22 WMR and.22 LR, the Argentine EDDA submachine gun uses the.22 WMR round. The.22 WMR is an enlarged, more powerful version of the much earlier.22 WRF, despite frequent claims to the contrary, it should not be used in any firearm except those specifically chambered for.22 WMR. The.22 WMR was for a time the most powerful rimfire round available, though the.22 WMR is more powerful than the.22 Long Rifle.22 WMR ammunition is not manufactured in as large a variety as.22 LR. It also is not as available in retail stores
7.
.38 Special
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The.38 Smith & Wesson Special is a rimmed, centerfire cartridge designed by Smith & Wesson. It is most commonly used in revolvers, although some semi-automatic pistols, in other parts of the world, it is known by its metric designation of 9×29. 5mmR or 9. 1×29mmR. Noted for its accuracy and manageable recoil, the.38 Special remains the most popular cartridge in the world more than a century after its introduction. It is used for shooting, formal target competition, personal defense. Despite its name, the caliber of the.38 Special cartridge is actually. 357–.358 inches, except for case length, the.38 Special is identical to the.38 Short Colt.38 Long Colt, and.357 Magnum. This allows the.38 Special round to be fired in revolvers chambered for the.357 Magnum. Upon its introduction, the.38 Special was originally loaded with black powder and this.38 Special variant incorporated a 200 grains round-nosed lead Lubaloy bullet, the.38 Super Police. Remington-Peters also introduced a similar loading, testing revealed that the longer, heavier 200 grains. 357-calibre bullet fired at low velocity tended to keyhole or tumble upon impact, providing more shock effect against unprotected personnel. This cartridge was called the.38 S&W Super Police or the. 38/200, britain would later adopt the. 38/200 as its standard military handgun cartridge. In 1930, Smith & Wesson introduced a large frame.38 Special revolver with a 5-inch barrel and fixed sights intended for police use, the following year, a new high-power loading called the. That same year, Colt Firearms announced that their Colt Official Police would also handle high-speed.38 Special loadings, the. 38/44 high-speed cartridge came in three bullet weights,158 grains,150 and 110 grains, with either coated lead or steel jacket, metal-piercing bullets. The media attention gathered by the. 38/44 and its ammunition eventually led Smith & Wesson to develop a new cartridge with a longer case length in 1934—this was the.357 Magnum. During World War II, some U. S. aircrew were issued.38 Special S&W Victory revolvers as sidearms in the event of a forced landing, the new military.38 Special loading propelled its 158 grains bullet at a standard 850 ft/s from a 4-inch revolver barrel. During the war, many U. S. naval and marine aircrew were also issued red-tipped.38 Special tracer rounds using either a 120 or 158 gr bullet for emergency signaling purposes. In 1956, the U. S. Air Force adopted the Cartridge, Caliber.38, Ball M41, a military variant of the.38 Special cartridge designed to conform to the rules of land warfare. By 1961, a slightly revised M41.38 cartridge specification known as the Cartridge, Caliber.38 Ball, Special, a variant of the standard M41 cartridge with a semi-pointed, unjacketed lead bullet was later adopted for CONUS police and security personnel. At the same time.38 tracer cartridges were reintroduced by the US Navy, Marines, tracer cartridges in.38 Special caliber of different colors were issued, generally as part of a standard aircrew survival vest kit. A request for more powerful.38 Special ammunition for use by Air Police and security personnel resulted in the Caliber.38 Special, Ball, in 1972, the Federal Bureau of Investigation introduced a new.38 +P loading that became known as the FBI Load
8.
Overpressure ammunition
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This is done typically to produce rounds with a higher muzzle velocity and stopping power, such as ammunition used for defensive purposes. Because of this, +P ammunition is found in handgun calibers which might be used for defensive purposes. Magnum cartridges, such as.357 Magnum or, for example, the.357 Magnum is slightly longer than the.38 Special, the lower powered round from which it was derived. +P ammunition, however, is identical to standard ammunition of its caliber. This was done when the ammunition manufacturers lowered the pressure of their standard rounds, +P ammunition was designed to replicate the performance of what had been standard pressure cartridges. +P cartridges are not recommended to be used in firearms of questionable quality, the burning characteristics of black powder used in early cartridges meant that these cartridges operated at low pressures, generally under 25,000 psi. With the advent of smokeless powder, which has a far greater energy density than black powder, cartridges such as the. 32-20 Winchester and. 44-40 Winchester were chambered in both revolvers and lever action rifles, and the rifles actions could handle much higher pressures. This led to machine gun only loads in these calibers, which provided far more velocity and energy in the rifles, but were not safe in the revolvers due to the higher pressures they generated. These loads were dropped due to a combination of safety concerns. The first modern smokeless powder cartridge deliberately loaded by a manufacturer to higher than standard pressure was the.38 ACP. This cartridge provided performance similar to other.38 caliber cartridges of the time, like the rifle only loads, the.38 Super could still be chambered in the older.38 ACP guns, producing a dangerous combination. Capable of reaching a muzzle energy of 500 ft/lbs, the.38 Super remains a viable defensive cartridge, though it is most popular in shooting sports such as IPSC. A similar move to a high pressure loading was done on the.38 Special in 1930, producing the. 38-44 HV loadings, official +P pressures are established by the SAAMI for certain cartridges, in general the +P pressure is approximately 10% higher than the standard pressure. SAAMI does not have a +P+ pressure standard, but this indicates a higher than the +P loading. In both cases this is below the pressure of a proof test cartridge, proof pressures are established by the SAAMI, as a percentage of the working pressure, so this places an upper bound on the +P+ pressures of 30–40%. By way of comparison, magnum calibers may be loaded to nearly twice the pressure of the rounds from which they were derived, overpressure rounds are commonly defensive rounds and are loaded by police and others in need of maximum power in a compact firearm. Accordingly, most overpressure rounds are hollow points or other types of expanding ammunition, higher pressure is not the same as high pressure, +P cartridges are generally loaded to pressures far below those typically found in magnum cartridges. Cartridges that are commonly boosted with +P pressures are the 9 mm Luger.45 ACP, and.38 Special, which are all cartridges that date from the early 20th century
9.
.357 Magnum
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The.357 S&W Magnum, or simply.357 Magnum, is a revolver cartridge with a. 357-inch bullet diameter. It was created by Elmer Keith, Phillip B, Wesson of firearms manufacturers Smith & Wesson and Winchester. It is based upon Smith & Wessons earlier.38 Special cartridge, the.357 Magnum cartridge was introduced in 1934, and its use has since become widespread. This cartridge started the Magnum era of handgun ammunition, the.357 Magnum cartridge is notable for its stopping power. The.357 Magnum was collaboratively developed over a period in the early to mid-1930s by a group of individuals in a response to Colts.38 Super Automatic. Tests at the revealed that those vests defeated any handgun cartridge traveling at less than about 1,000 feet per second. Colts.38 Super Automatic just edged over that velocity and was able to penetrate car doors and vests that bootleggers and gangsters were employing as cover. Though.38 and.357 would seem to be different diameter chamberings, they are in fact identical, the.38 Special nomenclature relates to the previous use of heeled bullets, which were the same diameter as the case. Thus, the only difference in the two cartridges is a slight difference in length, solely for safety purposes. Much credit for the. 357s early development is given to hunter and experimenter Elmer Keith, the. 38-44 HV load used the. 38-Special cartridge loaded to a much higher velocity than standard. 38-Special ammunition. The. 38-44 revolvers were made by using a.44 Special size gun with the barrel bored to accept. 357-caliber bullets, since the frame, cylinder, and barrel were much stronger than the standard.38 Special components, it was capable of withstanding much higher pressures. The. 38-44 HV round, while no longer available, was in most cases the equal of the later.357 Magnum, which works at more than double the pressure of standard.38 Special. Elmer Keith also contributed the Keith-style bullet, which increased the mass of bullet located outside the cartridge, the Keith bullet also employed a large, flat meplat, thus enabling rapid energy transfer for greater wounding properties. At the same time, this design does not deform like a hollow point. These characteristics of the Keith bullet make it suitable for hunting applications as well as for target shooting. In order to reassert itself as the leading law-enforcement armament provider, Smith & Wesson developed the.357 Magnum, Wesson leading the effort within Smith & Wesson, along with considerable technical assistance from Phillip B. Sharpe, a member of the Technical Division staff of the National Rifle Association, the new round was developed from Smith & Wessons existing.38 Special round. It used a different powder load, and ultimately the case was extended by 1⁄8 inch, the case extension was more a matter of safety than of necessity
