Cartridge comparison
.257 Roberts vs 6.5x55mm Swedish
.257 Roberts and 6.5x55mm Swedish are both in the reference; see the full spec comparison below.
Side by side
| .257 Roberts | 6.5x55mm Swedish | |
|---|---|---|
| Type | Rifle | Rifle |
| Introduced | 1934 | 1894 |
| Bullet diameter | 0.257″ | 0.2642″ |
| Case length | 2.2331″ | 2.1654″ |
| Max pressure | 54,000 psi | 55,000 psi |
| Recoil | 8–12 ft·lb | 12–16 ft·lb |
| Effective range | 300 yd | 800 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.