Cartridge comparison
.256 Gibbs Magnum vs 6.5x57mm Mauser
.256 Gibbs Magnum and 6.5x57mm Mauser are both in the reference; see the full spec comparison below.
Side by side
| .256 Gibbs Magnum | 6.5x57mm Mauser | |
|---|---|---|
| Type | Rifle | Rifle |
| Introduced | 1913 | 1894 |
| Bullet diameter | 0.265″ | 0.2638″ |
| Case length | 2.1752″ | 2.2323″ |
| Max pressure | 49,313 psi | 56,565 psi |
| Recoil | 11.6 ft·lb | 10–14 ft·lb |
| Effective range | 300 yd | 400 yd |
| SAAMI | Not SAAMI standardized | Not SAAMI standardized |
| CIP | CIP standardized | CIP standardized |
| Obsolete | Obsolete | — |
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.
