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Ho-203 was a Japanese autocannon that saw considerable use during World War II. It was a long-recoil automation of the Year 11 Type direct-fire infantry gun. It was fed by a 15-round closed-loop ammunition belt. It was operationally used only as the nose gun of the Kawasaki Ki-45-KAIc and the Kawasaki Ki-102 heavy fighters of the Imperial Japanese Army Air Force.[1]
 | This article needs additional citations for verification. (January 2024) |
| Ho-203 cannon | |
|---|---|
| Type | Aircraft cannon |
| Place of origin |  Empire of Japan |
| Service history | |
| Wars | World War II |
| Specifications | |
| Mass | 89 kg (196 lb) |
| Length | 1,532 mm (60.3 in) |
| Barrel length | 800 mm (31 in) |
| Cartridge | 37 x 112R (475 g) |
| Calibre | 37 mm (1.5 in) |
| Action | Long recoil-operated |
| Rate of fire | 120 rounds/min |
| Muzzle velocity | 570 m/s (1,900 ft/s) |
| Effective firing range | 900 m (3,000 ft) |
| Feed system | 15-round drum |
- Caliber: 37 mm (1.45 in)
- Ammunition: 37 x 112R (475 g)
- Weight: 89 kg (196 lb)
- Rate of fire: 120 rounds/min
- Muzzle velocity: 570 m/s (1,870 ft/s)
- Effective range: 900 m (2,950 ft).
- 37mm Bordkanone BK 3,7 (Nazi Germany)
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