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The 7.62×39mm (also called 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-pattern rifles , the SKS semi-automatic rifle, and the RPD / RPK light machine guns.
The 6.5 Grendel bullets have a true diameter of 6.71mm / 0.264" and the 6.5 Grendel case can be formed from abundant 7.62x39 cases with a neck re-sizing die, and fire-forming a slight change to the shoulder, if the case is made from brass. Many of the popular 7.62x39 cases are made from steel, which will not work for reforming the shoulder.
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 5.6×39mm, also known in the U.S. as .220 Russian, is a cartridge developed in 1961 for deer hunting in the USSR. [3] It fires a 5.6mm projectile from necked down 7.62×39mm brass. While it originally re-used 7.62x39 cases, once it became popular enough commercial ammunition started being manufactured, both in the USSR and in Finland.
In his spare time Chis E. Murray has been developing a cartridge which he calls the 7×46mm Universal Intermediate Assault Cartridge. [10] The 7×46mm is designed to replace both the 5.56mm and 7.62mm NATO cartridges. It is low recoil and so can be used from carbines, but has long enough range to be used in machine guns and designated marksmen ...
The ULMG is fitted with the same barrel as the NG-7 SF, a 420 mm (16.5 in) long barrel that is shorter than NG-7, and it is 1.4 kg lighter than the NG-7. [24] The ULMG can be converted to 6.5mm Creedmoor by changing barrels. Negev 7 ULMG SF – a compact variant of the Negev 7 ULMG, fitted with a 330 mm (13.0 in) long barrel. [25]
Chambered in 5.56×45mm NATO [6] and 7.62×39mm. AR-M7F - like the AR-M1, but with an AK-101 -style folding stock. AR-M9 / AR-M9F - improved AK-74 copy like the AR-M1/AR-M1F, features a thumb-operable fire selector and a different style polymer stock set.
Compared to larger calibers, proponents of the 5.56×45mm NATO round contend that animal studies of the wounding effects of the 5.56×45mm NATO round versus the 7.62×39mm have found that the 5.56×45mm NATO round is more damaging, due to the post-impact behavior of the 5.56 mm projectile resulting in greater cavitation of soft tissues. [43]