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The gun was supplied with two-part ammunition with two increment charges: the M9 Green Bag propellant was used for medium ranges and was preferred for improved accuracy and reduced barrel erosion, while the M10 White Bag was used for long- and extreme-range firing. Only two fuses were used: the M51A3 point detonating (and preset delay) fuse ...
Each D839 propellant (smokeless powder) grain used for full charges for this gun was 2 in (51 mm) long, 1 in (25 mm) in diameter and had seven perforations, each 0.060 in (1.5 mm) in diameter with a web thickness range of 0.193 to 0.197 in (4.9 to 5.0 mm) between the perforations and the grain diameter. A maximum charge consisted of six silk ...
The needle-activated centerfire breech-loading gun would become a major feature of firearms thereafter. [34] Pauly made an improved version, protected by a patent, on 29 September 1812. [31] Probably no invention connected with firearms has wrought such changes in the principle of gun construction as those effected by the "expansive cartridge ...
The breech mechanism was similar and loading two silk bags each containing 43 pounds (20 kg) of smokeless powder gave a 335-pound (152 kg) projectile a velocity of 2500 feet per second (760 m/s). [1] Each gun could fire about four rounds per minute. Maximum range was 30,050 yd (27,480 m) at the maximum elevation of 41 degrees. [5]
The Mark 17 was used in a single-pedestal Mark 18 mount. The Mark 17 gun could fire a 105-pound (48 kg) Common shell (HE) projectile 19,800 yd (18.1 km) at an elevation of 20 degrees. Ammunition was bagged (the projectile and the powder bag were separate). The full-charge powder bag for these guns weighed 34 or 34.5 lb (15.4 or 15.6 kg). [6]
The bean bag round typically consists of a small fabric "pillow" filled with #9 lead shot weighing about 40 grams (1.4 oz). It is fired from a normal 12-gauge shotgun.When fired, the bag is expelled at around 70 to 90 metres per second (230 to 300 ft/s); it spreads out in flight and distributes its impact over about 6 square centimetres (1 sq in) of the target.