Load data for .280 Ackley Improved + 120gr Sierra Pro-Hunter
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
ImperialMetric
Bullet:.284 | 120gr | Pro-Hunter
Cartridge:.280 Ackley Improved load data
Case Length (L3):2.540" | 64.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.284" | 7.2 mm
Case Capacity:74 gow | 4.80 cm³
Primer Size:Large Rifle (LR)
Max. Pressure (SAAMI):65,000 psi | 4,482 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:16.0
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Community Loads for .280 Ackley Improved + 120gr Sierra Pro-Hunter
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) |
|---|---|---|---|---|---|
| 54.2 gr | 3.330" | 26.0" | 2839 fps | ••• | |
| 55.9 gr | 3.330" | 26.0" | 2921 fps | ••• | |
| 57.6 gr | 3.330" | 26.0" | 3004 fps | ••• | |
| ••• | 3.330" | 26.0" | 3042 fps | ••• | |
| ••• | 3.330" | 26.0" | 3013 fps | ••• | |
| ••• | 3.330" | 26.0" | 2799 fps | ••• | |
| ••• | 3.330" | 26.0" | 2891 fps | ••• | |
| ••• | 3.330" | 26.0" | 2904 fps | ••• | |
| ••• | 3.330" | 26.0" | 2936 fps | ••• | |
| ••• | 3.330" | 26.0" | 2845 fps | ••• | |
| ••• | 3.330" | 26.0" | 2932 fps | ••• | |
| ••• | 3.330" | 26.0" | 2946 fps | ••• | |
| ••• | 3.330" | 26.0" | 3012 fps | ••• | |
| ••• | 3.330" | 26.0" | 3021 fps | ••• | |
| ••• | 3.330" | 26.0" | 3075 fps | ••• | |
| ••• | 3.330" | 26.0" | 3137 fps | ••• | |
| ••• | 3.330" | 26.0" | 3201 fps | ••• | |
| ••• | 3.330" | 26.0" | 3232 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.