Load data for .280 Ackley Improved + 175gr Sierra MatchKing
494 suitable loads across 84 powder(s) for cartridge .280 Ackley Improved with 175gr Sierra MatchKing bullet.
The most recommended powders for this combination are Alliant Reloder-26, Norma MRP and Vihtavuori N560.
Based on SAAMI, the max. allowed case length is 2.525 in / 64.14 mm, the max. cartridge length is 3.330 in / 84.58 mm, and the max. allowed pressure is 65,000 PSI / 4,482 bar.

Based on SAAMI, the max. allowed case length is 2.525 in / 64.14 mm, the max. cartridge length is 3.330 in / 84.58 mm, and the max. allowed pressure is 65,000 PSI / 4,482 bar.

Load Specifications
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Community Loads for .280 Ackley Improved + 175gr Sierra MatchKing
Real loads for this combination shared by our community. Charge weights are only fully visible with an active Pro licence.
| Powder | Charge (gr) | C.O.L. | Barrel Length | Velocity (fps) | Pressure (psi) |
|---|---|---|---|---|---|
| 50.2 gr | 3.330" | 26.0" | 2378 fps | ••• | |
| 51.8 gr | 3.330" | 26.0" | 2447 fps | ••• | |
| 53.4 gr | 3.330" | 26.0" | 2515 fps | ••• | |
| ••• | 3.330" | 26.0" | 2417 fps | ••• | |
| ••• | 3.330" | 26.0" | 2538 fps | ••• | |
| ••• | 3.330" | 26.0" | 2660 fps | ••• | |
| ••• | 3.330" | 26.0" | 2720 fps | ••• | |
| ••• | 3.330" | 26.0" | 2779 fps | ••• | |
| ••• | 3.330" | 26.0" | 2333 fps | ••• | |
| ••• | 3.330" | 26.0" | 2443 fps | ••• | |
| ••• | 3.330" | 26.0" | 2551 fps | ••• | |
| ••• | 3.330" | 26.0" | 2607 fps | ••• | |
| ••• | 3.330" | 26.0" | 2292 fps | ••• | |
| ••• | 3.330" | 26.0" | 2397 fps | ••• | |
| ••• | 3.330" | 26.0" | 2501 fps | ••• | |
| ••• | 3.330" | 26.0" | 2605 fps | ••• | |
| ••• | 3.330" | 26.0" | 2652 fps | ••• | |
| ••• | 3.330" | 26.0" | 2705 fps | ••• | |
| ••• | 3.330" | 26.0" | 2447 fps | ••• | |
| ••• | 3.330" | 26.0" | 2570 fps | ••• | |
| ••• | 3.330" | 26.0" | 2461 fps | ••• | |
| ••• | 3.330" | 26.0" | 2516 fps | ••• | |
| ••• | 3.330" | 26.0" | 2571 fps | ••• | |
| ••• | 3.330" | 26.0" | 2596 fps | ••• | |
| ••• | 3.330" | 26.0" | 2499 fps | ••• | |
| ••• | 3.330" | 26.0" | 2582 fps | ••• | |
| ••• | 3.330" | 26.0" | 2663 fps | ••• | |
| ••• | 3.330" | 26.0" | 2704 fps | ••• | |
| ••• | 3.330" | 26.0" | 2283 fps | ••• | |
| ••• | 3.330" | 26.0" | 2387 fps | ••• | |
| ••• | 3.330" | 26.0" | 2493 fps | ••• | |
| ••• | 3.330" | 26.0" | 2600 fps | ••• | |
| ••• | 3.330" | 26.0" | 2333 fps | ••• | |
| ••• | 3.330" | 26.0" | 2452 fps | ••• | |
| ••• | 3.330" | 26.0" | 2572 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.