| 5.56x45mm NATO, .30-30 Win., 7.62X51 NATO.|
|Manufacturer:||Winchester, Lake City Armory|
|Date Introduced:||1952, 1954(NATO adoption)|
The 7.62x51mm NATO is a rifle and machine gun cartridge developed in the 1950's as a standard for NATO small arms. Today weapons chambered for this round primarily include sniper rifles and light-machine guns. Propelling a 150 gr. projectile at 2,750 fps(feet-per-second) the cartridge produces approximately 2,500ft-lbs of muzzle energy. This is double the energy produced by the 5.56x45mm round from an M-16. The 7.62x51mm is capable of penetrating multiple layers of kevlar body-armor and producing hydrostatic shock in living targets, making it a reliable anti-personnel cartridge.
Special versions of this cartridge have been produced, including M118LR Match Grade firing a 175gr. bullet for long range sniper rifles and competition shooting. A commercial variant is also produced, called the .308 Winchester, which has become the most popular short-action(non magnum) big-game hunting cartridge in the world.