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The below table gives a list of firearms that can fire the 7.62×39mm cartridge, first developed and used by the Soviet Union in the late 1940s. [1] The cartridge is widely used due to the worldwide proliferation of Russian SKS and AK-47 pattern rifles, as well as RPD and RPK light machine guns.
The Taylor KO factor multiplies bullet mass (measured in grains) by muzzle velocity (measured in feet per second) by bullet diameter (measured in inches) and then divides the product by 7,000, converting the value from grains to pounds and giving a numerical value from 0 to ~150 for normal hunting cartridges.
Compared to the 6.8×43 mm Special Purpose Cartridge, another round made to have increased stopping power over the 5.56 NATO, the 300 Blackout has different capabilities. The 300 BLK was designed with a specific shorter-range focus to have equal or more energy than the 7.62 Soviet and work reliably with suppressors.
The 7.62×39mm (aka 7.62 Soviet, formerly .30 Russian Short) [5] round is a rimless bottlenecked intermediate cartridge of Soviet origin. The cartridge is widely used due to the global proliferation of the AK-47 rifle and related Kalashnikov rifles, the SKS semi automatic rifle, as well as the RPD and RPK light machine guns.
A popular 7 mm hunting caliber bullet is actually .283 in diameter (7.2 mm), but wildcat cartridges using this caliber bullet in a 5.56 x 45 case have so far not been successful. There is an existing and well-developed use of hunting-rifle bullets in the .277 caliber (6.8 mm), introduced by Winchester as the 270 in 1925.
7.50 g 350 m/s 2.63 N⋅s .38 Special (9×29mmR) 158 gr ... and competitors are encouraged to use low power factor ammo in order to preserve the steel targets.
In hunting applications, the 7.62×40mm WT delivers slightly more energy than the 7.62×39mm and is similar to the 6.8 SPC [7] and .30-30 Winchester, making it useful for game such as deer and feral hogs, particularly for hunters who want to use an AR-15, but cannot legally use the 5.56 round, due to its low power factor on game. [8]
The barrel has four right-hand grooves with a rifling twist rate of 185 mm (1:7 in), and has a muzzle velocity of 920 m/s (3,018 ft/s) using standard ammunition. Small numbers of this variant were made in order to show to clients for potential contracts that call for the purchase of the RK 95 TP in 5.56 NATO caliber in trade shows and arms ...