Ho-3 was a Japanese

autocannon An autocannon, automatic cannon or machine cannon is a fully automatic gun that is capable of rapid-firing large-caliber ( or more) armour-piercing, explosive or incendiary shells, as opposed to the smaller-caliber kinetic projectiles (bull ...

used during

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

. It was a drum-fed improvement of the magazine-fed

Ho-1 cannon Ho-1 was a Japanese autocannon used during World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countri ...

, itself derived from the Type 97 antitank rifle.

Specifications

*Caliber: 20 mm (0.8 in) *Ammunition: 20 x 125 (164 g) *Weight: 43 kg (95 lb) *Rate of fire: 300-400 rounds/min *Muzzle velocity: 820 m/s (2,690 ft/s) {{DEFAULTSORT:Ho-3 Cannon 20 mm artillery Autocannon Aircraft guns