.280 British
1947 · Royal Small Arms Factory · 1 firearm in catalog
Also known as: 7x43mm, .280/30, 7mm Mk1Z
Cartridge specifications
| Bullet Diameter | 7.21 mm (0.284") |
| Neck Diameter | 7.92 mm (0.312") |
| Base Diameter | 11.63 mm (0.458") |
| Case Length | 43 mm (1.693") |
| Overall Length | 64.5 mm (2.539") |
| Max Pressure | 345 MPa (50,000 psi) |
| Typical Bullet Weight | 9.08 g (140 gr) |
| Typical Muzzle Velocity | 745 m/s (2444 fps) |
| Typical Muzzle Energy | 2519 J (1858 ft·lbf) |
| Primer Type | Large Rifle |
| Cartridge Type | Rimless |
| Introduced | 1947 |
Firearms chambered in .280 British
- Enfield EM-2 — Royal Small Arms Factory · Assault Rifle · 1951