Tags: Weapon.
The Ho-301 was a Japanese 40 millimeter calibre autocannon that saw limited use during World War II on Japanese Army Nakajima Ki-44 and Kawasaki Ki-45 KAI aircraft. It was unusual in using caseless ammunition. Although the effective range of the cannon was only 150 meters (490 ft) the Ho-301 was light and rapid-firing for its caliber. The caseless design revolved around a specially designed projectile that was in effect a small rocket.