127×108mm

127x108mm refers to a specific cartridge size, commonly associated with the 12.7x108mm Russian round. This designation indicates the nominal caliber of the projectile in millimeters, followed by the length of the cartridge case in millimeters. The 12.7x108mm cartridge is a heavy machine gun and anti-materiel rifle round developed in the Soviet Union.

This caliber is primarily used in Russian and Warsaw Pact-era weaponry. Notable firearms chambered for the 12.7x108mm round include the DShK, NSV, and Kord heavy machine guns, as well as the OSV-96 anti-materiel rifle. Its performance characteristics make it effective against light armored vehicles, fortifications, and personnel at extended ranges.

The 12.7x108mm round is distinct from other heavy machine gun calibers, such as the .50 BMG (12.7x99mm NATO). While both are heavy machine gun rounds, they are not interchangeable due to differences in case dimensions and overall cartridge design. Ammunition for the 12.7x108mm is produced in various types, including standard ball, armor-piercing, and incendiary rounds. Its widespread use in many countries, particularly those historically aligned with the Soviet Union, ensures its continued relevance in military contexts.