7.62X39mm

The 7.62x39mm is a rimless cartridge designed in 1943 in the Soviet Union. It was developed in response to the 7.92x33mm Kurz cartridge used in the German Sturmgewehr 44 assault rifle. The standard military version of the 7.62x39mm uses a steel case and a 123-grain, .312-caliber, FMJ steel core spitzer bullet at 2,330 fps. It is chambered in approximately 15 million SKSs and about 75 million AK-47s, as well as a number of sporting rifles.