What caliber is a 20mm shell?
The 20 mm caliber is a common firearm bore diameter, typically used to distinguish smaller-caliber weapons, commonly called “guns”, from larger-caliber “cannons” (e.g. machine gun vs. autocannon). All 20 mm cartridges have an outside projectile (bullet) diameter and barrel bore diameter of 0.787 inches (20.0 mm).
What are 20 mm bullets used for?
Usage. Like most cannon ammunition, armed forces typically use 20 mm caliber weapons against large targets, such as vehicles, buildings, or aircraft. Though lethal against individual soldiers, 20mm ammunition is so large and heavy that its effects are inefficient against relatively small targets.
How heavy is a 20mm round?
20-Millimeter. Twenty-millimeter ammunition is the ammo used on the M197 automatic gun. The rounds are electrically primed; chamber pressure varies from 60,500 to 61,500 psi. Projectile weight of the M56 HEI round is 1,543 grains (3.5 ounces); other 20-mm projectiles are of comparable weight.
How far can a 20mm cannon shoot?
| Oerlikon 20 mm cannon | |
|---|---|
| Muzzle velocity | L70: 820 m/s (2,700 ft/s) L85: 1,050 m/s (3,400 ft/s) |
| Effective firing range | Against low-flying aircraft (HE round) L70: 914 m (1,000 yd) L85: 1,500 m (1,600 yd) |
| Maximum firing range | HE round at 45° L70: 4,389 m (4,800 yd) L85: 6,800 m (7,400 yd) |
Can you own a 20mm?
Yes* you can buy one. If you have the $, do all the appropriate paperwork, the time to wait, and proper approval. A single training round in 20mm will cost ~$10 per round.
What kind of gun is a 20mm cannon?
Oerlikon 20 mm cannon. The Oerlikon 20 mm cannon is a series of autocannons, based on an original German 20 mm Becker design that appeared very early in World War I. It was widely produced by Oerlikon Contraves and others, with various models employed by both Allied and Axis forces during World War II, and many versions still in use today.
What is a 20mm Type 2?
This cartridge was developed during WW2 for the Japanese Army air force’s Ho-5 cannon, also known as the 20mm Type 2. The gun was based on a slightly enlarged Browning M2.
What was the German 20mm called in WW2?
WW2, 1942 dated German 20 mm MK151/20 (20×82) HEI (High Explosive Incendiary) Meinengeschloss (M geschloss) Cannon Round O 1504 – O 1504 INERT DEACTIVATED.
When did the British introduce the 20mm Mark II?
“Considerable difficulties” with equipment and labor had to be overcome before deliveries of the British version of this gun, designated as the 20 mm Mark II, began in the fall of 1941.