12.7x99mm NATO
12.7x99mm NATO · 1921 · John Moses Browning · 37 firearms in catalog
Also known as: .50 BMG, .50 Browning Machine Gun, 12.7x99mm, .50 caliber
Cartridge specifications
| Bullet Diameter | 13 mm (0.512") |
| Case Length | 99 mm (3.898") |
| Overall Length | 138.4 mm (5.449") |
| Max Pressure | 378.68 MPa (54,923 psi) |
| Typical Bullet Weight | 42 g (648 gr) |
| Typical Muzzle Velocity | 853 m/s (2799 fps) |
| Typical Muzzle Energy | 18000 J (13276 ft·lbf) |
| Primer Type | Large Rifle |
| Cartridge Type | Rimless |
| Introduced | 1921 |
Firearms chambered in 12.7x99mm NATO
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