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This is a list of firearm cartridges which have bullets in the 12 millimetres (0.47 in) to 12.99 millimetres (0.511 in) caliber range. Length refers to the cartridge case length. OAL refers to the overall length of the cartridge. Bullet refers to the diameter of the bullet. Some measurements are in millimetres, while others are measured in inches.
12 inches (304.8 mm) Breech. Welin interrupted screw. Muzzle velocity. 2,700 ft/s (823 m/s) [4] Maximum firing range. 22,860 m (25,000 yd) [5] The BL 12 inch Gun Mark X[note 1] was a British 45-calibre naval gun which was mounted as primary armament on battleships and battlecruisers from 1906. It first appeared on HMS Dreadnought.
The 8"/55 caliber gun (spoken "eight-inch-fifty-five-caliber") formed the main battery of United States Navy heavy cruisers and two early aircraft carriers. United States naval gun terminology indicates the gun barrel had an internal diameter of 8 inches (203 mm), and the barrel was 55 calibers long (barrel length is 8 inch × 55 = 440 inches ...
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Hardness comparison. A variety of hardness -testing methods are available, including the Vickers, Brinell, Rockwell, Meyer and Leeb tests. Although it is impossible in many cases to give an exact conversion, it is possible to give an approximate material-specific comparison table for steels.
Contents. 12.7 × 108 mm. The 12.7 × 108 mm cartridge is a 12.7 mm heavy machine gun and anti-materiel rifle cartridge used by the former Soviet Union and Warsaw Pact countries, including Russia, China, Iran, North Korea, and many others. It was invented in 1934 to create a cartridge like the German 13.2mm TuF anti-tank rifle round and the ...
38,573 yards (35,271 m) [1] The 12"/50 caliber gun Mark 8 was a US naval gun mounted on the Alaska -class cruiser. The gun, like the "large cruiser" that mounted it, was intended to fill the gap between US "heavy cruisers" (6-8") and US battleships (14-16"). The name describes the size of the shells, 12 inches in diameter, and the length of the ...
2,100 ft/s (640 m/s) (reduced charge) Effective firing range. 23,900 yd (21,900 m) at 15° elevation. The 12"/50 caliber Mark 7 gun (spoken "twelve-inch-fifty-caliber") was a United States Navy 's naval gun that first entered service in 1912. Initially designed for use with the Wyoming class of dreadnought battleships, the Mark 7 also armed the ...