50 BMG, Gun Wiki

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The .50 BMG (short for Browning Machine Gun) (12.7×99mm NATO in metric) is a large caliber machine gun cartridge. It is based on the .30-06 Springfield, in a largely upscaled form factor. The .50 BMG cartridge is also used in long-range target and sniper rifles, as well as other .50 caliber machine guns. The use in single-shot and semi-automatic rifles has resulted in many specialized match-grade rounds that are not used in .50 caliber machine guns. A wide variety of ammunition is available, and