Cartridge comparison
.270 Winchester vs .280 Ackley Improved
.270 Winchester and .280 Ackley Improved are both in the reference; see the full spec comparison below.
Side by side
| .270 Winchester | .280 Ackley Improved | |
|---|---|---|
| Type | Rifle | Rifle |
| Introduced | 1925 | 1960 |
| Bullet diameter | 0.277″ | 0.284″ |
| Case length | 2.5402″ | 2.5252″ |
| Max pressure | 65,000 psi | 65,000 psi |
| Recoil | 16–22 ft·lb | 13–18 ft·lb |
| Effective range | 500 yd | 600 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.