20x72mmRB
1939 · Oerlikon (FF lineage) · 1 firearm in catalog
Also known as: 20mm Type 99 Mark 1, 20x72RB, Oerlikon FF 20mm
Cartridge specifications
| Bullet Diameter | 20 mm (0.787") |
| Case Length | 72 mm (2.835") |
| Typical Bullet Weight | 128 g (1975 gr) |
| Typical Muzzle Velocity | 600 m/s (1969 fps) |
| Typical Muzzle Energy | 23040 J (16993 ft·lbf) |
| Cartridge Type | Rebated Rim |
| Introduced | 1939 |
Firearms chambered in 20x72mmRB
- Type 99 Aircraft Cannon — Dai-Nihon Heiki · Machine Gun · 1939