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Green or blue projectile with brown nose and 1/4 black letters reading "High pressure test round" Cartridge, 20 mm, low pressure test, Mk 102 Mod 0 (USN) Not listed: 1700: Inert: Not listed: Green or blue projectile with brown nose and 1/4 black letters reading "Low pressure test round" Cartridge, 20 mm, high explosive incendiary, Mk 105 Mod 0 ...
The basic design was based on the original Oerlikon 20 mm cannon, in turn based on the German Empire's Becker 20 mm cannon of World War I. In the post-war period, Oerlikon had developed the original design to produce three autocannons with increasingly powerful rounds; the original model, later known as the "F", used the Becker 20x70mm round ...
20 mm caliber is a specific size of popular autocannon ammunition. The dividing line between smaller-caliber weapons, commonly called "guns", from larger-caliber "cannons" (e.g. machine gun vs. autocannon), is conventionally taken to be the 20 mm round, the smallest caliber of autocannon.
The Hispano fired a 130 grams (4.586 oz) 20 mm diameter projectile from a 110 mm (4.331 in) long casing, the whole round weighing 257 g (9.065 oz). [19] Lengths of the projectiles varied with type but were set to variable depth in the casing to produce a total full round length of 184 mm (7.244 in) regardless of projectile type. [ 20 ]
The M39 cannon with its 20 mm ammunition chute. The M39 cannon is a 20 mm caliber single-barreled revolver cannon developed for the United States Air Force in the late 1940s. It was used on a number of fighter aircraft from the early 1950s through the 1980s.
The M1 ammo crate held a total of 1,000 belted or linked rounds packed in 4 M1 ammo boxes and the later M1A1 ammo crate held a total of 1,000 belted or 1,100 linked rounds packed in M1A1 ammo boxes. There were two .50 M2 ammo boxes to a crate (for a total of 220 belted or 210 linked rounds) with a volume of 0.93 cubic feet.
The NTW-20 is a South African anti-materiel rifle, developed by Denel Mechem in the 1990s.It is intended for deployment against targets including parked aircraft, telecommunication masts, power lines, missile sites, radar installations, refineries, satellite dishes, gun emplacements, bunkers, and personnel, using a range of specialised projectiles.
Also, its length and weight made portability difficult, so a two-wheeled split-trail carriage was provided. Once towed into position the gun could be fired from the carriage or dismounted and fired from a bipod for the anti-tank role. In the anti-tank role, it was able to penetrate 15–18 mm (0.59–0.71 in) at 300 m (330 yd) (30°). [2]