Lindcott Armory Compare / .270 Winchester vs .280 Ackley Improved
Cartridge comparison
.270 Winchester vs .280 Ackley Improved
.270 Winchester is faster (3,140 vs 3,100 fps); .280 Ackley Improved carries more energy (3,300 vs 2,850 ft·lb); .280 Ackley Improved recoils less.
.270 Winchester →Representative trajectory · 100 yd zero0–800 yd Open in Ballistic Compare ↗
.280 Ackley Improved →Representative trajectory · 100 yd zero0–800 yd Open in Ballistic Compare ↗
| .270 Winchester | .280 Ackley Improved | |
|---|---|---|
| Type | Rifle | Rifle |
| Introduced | 1925 | 1960 |
| Bullet ⌀ | 0.277″ | 0.284″ |
| Case length | 2.54″ | 2.54″ |
| Velocity | 2,900–3,140 fps | 2,900–3,100 fps |
| Energy | 2,700–2,850 ft·lb | 2,950–3,300 ft·lb |
| Max pressure | 65,000 psi | 65,000 psi |
| Recoil | 16–22 ft·lb | 13–18 ft·lb |
| Eff. range | 500 yd | 700 yd |
FAQs
- Is .270 Winchester faster than .280 Ackley Improved?
- .270 Winchester is faster — up to 3,140 fps versus 3,100 fps.
- Does .270 Winchester hit harder than .280 Ackley Improved?
- .280 Ackley Improved carries more muzzle energy (3,300 vs 2,850 ft·lb).