The 7×57mm Mauser is a first-generation smokeless powder rimless bottlenecked rifle cartridge. It was developed by Paul Mauser of the Mauser company in 1892 and adopted as a military cartridge by Spai
Two 7×57mm cartridges next to a 7.5×55mm/GP11 (middle), .308 Winchester and .223 Remington (far right)