Cartridge comparison
12.7x81mmSR Vickers vs .50 BMG
12.7x81mmSR Vickers and .50 BMG are both in the reference; see the full spec comparison below.
Side by side
| 12.7x81mmSR Vickers | .50 BMG | |
|---|---|---|
| Type | Rifle | Rifle |
| Introduced | 1925 | 1921 |
| Bullet diameter | 0.5138″ | 0.511″ |
| Case length | 3.1969″ | 3.9098″ |
| Max pressure | 45,000 psi | 55,000 psi |
| Recoil | 60–80 ft·lb | 100–200 ft·lb |
| Effective range | 800 yd | 2000 yd |
Highlighted cells hold the clear edge where both sides have a number. Every figure is a range maximum from the reference; typical loads run lower.
Case profiles, to scale
Drawn to the same scale, so the proportions are true. Physical size varies with your screen.