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What is the difference between a machine gun and a auto cannon?
The precise definition of an autocannon is often confusing, as there are other weapons which fulfill much of the criteria that define it, however a useful definition is that an autocannon is a large fully automatic gun capable of firing armour piercing, explosive-filled, or other types of shells, whereas a true machine …
What is considered a heavy machine gun?
A heavy machine gun or HMG is a belt-fed machine gun that fires full-powered/magnum cartridges and is designed to be significantly more massive than light, medium or general-purpose machine guns.
What is the biggest caliber gun in the world?
The Pfeifer-Zeliska . 600 Nitro Express Revolver is the largest caliber handgun in the world, and the most powerful. To provide some context, this handgun is so huge that its . 600 Nitro Express rounds are actually British-made rifle bullets.
What is the difference between a machine gun and a cannon?
My understanding is that cannon (auto-cannon) were defined as firing large enough projectiles that they could hold an explosive charge while traditionally machine-guns did not. 20mm used to be considered the smallest round size but advances in ammunition have blurred the boundaries somewhat.
What is a 20mm cannon equivalent to in real life?
Commander Monroe noted that, from a gun “horsepower” standpoint, one 20 mm cannon was equivalent to three .50-caliber machine guns. “The 20 will go through .75 inch of armor at 500 yards, while the .50 cal will go through only .43.” He also noted that the cannon barrel was not as susceptible to being damaged with long bursts like the machine gun’s.
What is the difference between a cannon and an MG?
Living dangerously amongst all the expertise here, but AFAIK a “cannon” (at least in aircraft armament terms) fires explosive shells while an MG fires non-explosive bullets. OK, incendaries and tracer blur things somewhat….
What was the first US aircraft to have a cannon?
It was given by Commander J.P. Monroe, head of the armament branch of the Bureau of Aeronautics. A dive-bomber, the SB2C Helldiver, was the first U.S. Navy carrier based airplane to become operational with cannon, two replacing the four .50-caliber machine guns.