12.7 x 107 mm
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The 12.7 x 107 mm cartridge is a machine gun and heavy-rifle cartridge used by the Soviet Union, the former Warsaw Pact, modern Russia, and other countries.
It is the approximate Russian equivalent of the US .50 BMG (12.7 x 99 mm) cartridge. The difference between the two is the bullet shape, the types of powder used, and that the casing of the 12.7 x 107 mm is 8 mm longer. This extra length allows for more powder to be stored, allowing this cartridge to be slightly more powerful than its US counterpart. However, the US round has often had the edge in AP cartridges due to higher technology and more availability. Also, its use (12.7x107) in heavy rifles is hampered by few match grade rounds.
Firearms using this cartridge include:
- DShK heavy machine gun
- NSV heavy machine gun
- V-94 anti-tank/anti-material rifle
- Gepard anti-materiel rifle series
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