20x102mm
20x102mm · 1940 · United States military · 2 firearms in catalog
Also known as: 20mm Vulcan, 20x102mm NATO, 20mm
Cartridge specifications
| Bullet Diameter | 20 mm (0.787") |
| Case Length | 102 mm (4.016") |
| Overall Length | 170 mm (6.693") |
| Typical Bullet Weight | 100 g (1543 gr) |
| Typical Muzzle Velocity | 1050 m/s (3445 fps) |
| Typical Muzzle Energy | 55125 J (40658 ft·lbf) |
| Primer Type | Centerfire |
| Cartridge Type | Rimless |
| Introduced | 1940 |
Firearms chambered in 20x102mm
- Anzio Ironworks 20mm — Anzio Ironworks · Sniper Rifle · 2003
- M61 Vulcan — General Electric · Machine Gun · 1959