Cartridge comparison
.257 Ackley Improved vs .257 Weatherby Magnum
.257 Ackley Improved and .257 Weatherby Magnum are both in the reference; see the full spec comparison below.
Side by side
| .257 Ackley Improved | .257 Weatherby Magnum | |
|---|---|---|
| Type | Rifle | Rifle |
| Introduced | 1945 | 1944 |
| Bullet diameter | 0.257″ | 0.257″ |
| Case length | 2.3331″ | 2.549″ |
| Max pressure | 54,000 psi | 62,500 psi |
| Recoil | 9–13 ft·lb | 16–22 ft·lb |
| Effective range | 400 yd | 500 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.
