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The .50 BMG (.50 Browning Machine Gun), also known as 12.7×99mm NATO, and designated as the 50 Browning by the C.I.P., [1] is a .50 in (12.7 mm) caliber cartridge developed for the M2 Browning heavy machine gun in the late 1910s, entering official service in 1921.
A .50 caliber handgun is a handgun firing a bullet measuring approximately 0.5 inches (12.7 mm) in diameter intended with the task of penetration. Historically, many black powder pistols fired bullets with diameters well above a half inch.
The .50 Action Express (AE) (12.7×33mmRB) is a large-caliber handgun cartridge, best known for its usage in the Desert Eagle. Developed in 1988 by American Evan Whildin of Action Arms, the .50 AE is one of the most powerful pistol cartridges in production.
The term caliber is used as a measure of length of artillery barrels from muzzle to breech, expressed as a multiple of the bore diameter. For example, a 4-inch gun of 50 calibers would have a barrel 4 in × 50 = 200 in long (written as 4" L/50 or 4"/50).
The lightweight 16-in/50 Mark 7 was designed to resolve this conflict. These guns were 50 calibers long, 50 times their 16-inch (406 mm) bore diameter with barrels 66.7 ft (20.3 m) long, from chamber to muzzle. Each gun weighed about 239,000 lb (108 t) without the breech, and 267,900 lb (121.5 t) with the breech. [1]
Neck diameter.525 in (13.3 mm) Base diameter.535 in (13.6 mm) Rim diameter .445 in (11.3 mm) ... The .50 Beowulf is a proprietary caliber developed as a specialized ...
.50 caliber and larger.50 AE.50 Alaskan.50 Beowulf.50 BMG.50 Krater.50 Spotter-Tracer.50-70 Government.50-90 Sharps.50-110 Winchester.50-140 Sharps.500 A-Square .500 ...
Neck diameter.535 in (13.6 mm) Shoulder diameter.535 in (13.6 mm) Base diameter.562 in (14.3 mm) Rim diameter ... .50 caliber handguns; List of cartridges by caliber;