21 published .270-257 Ackley Improved (P.O. Ackley Data) reloading recipes across 6 powders, with bullet weights from 100 to 170 grains and recorded velocities between 2,486 and 3,292 fps. Every load lists charge weight, velocity, COAL, primer and case where the source published it.
The first 5 of 21 recipes.
| Bullet | Powder | Charge | Velocity | COAL | Primer |
|---|---|---|---|---|---|
| 100gr | IMR IMR-3031 | 41.0 gr | 3103 fps | — | — |
| 100gr | IMR IMR-4064 | 46.0 gr | 3263 fps | — | — |
| 100gr | IMR IMR-4320 | 48.0 gr | 3292 fps | — | — |
| 100gr | IMR IMR-4350 | 55.0 gr | 3263 fps | — | — |
| 100gr | IMR IMR-4895 | 46.0 gr | 3144 fps | — | — |
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Search all 21 .270-257 Ackley Improved (P.O. Ackley Data) loads