Load data for .280 Ackley Improved + 150gr Nosler Partition
The most recommended powders for this combination are Hodgdon H4831 SC.
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 | 150gr | Partition
Cartridge:.280 Ackley Improved load data
Case Length (L3):2.540" | 64.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.430" | 10.9 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:1:11.5
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Community Loads for .280 Ackley Improved + 150gr Nosler Partition
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) |
|---|---|---|---|---|---|
| 53.0 gr | 3.330" | 26.0" | 2799 fps | ••• | |
| 55.0 gr | 3.330" | 26.0" | 2888 fps | ••• | |
| 57.5 gr | 3.330" | 26.0" | 2750 fps | ••• | |
| ••• | 3.330" | 26.0" | 2844 fps | ••• | |
| ••• | 3.330" | 26.0" | 2937 fps | ••• | |
| ••• | 3.330" | 26.0" | 3048 fps | ••• | |
| ••• | 3.330" | 26.0" | 2690 fps | ••• | |
| ••• | 3.330" | 26.0" | 2784 fps | ••• | |
| ••• | 3.330" | 26.0" | 2877 fps | ••• | |
| ••• | 3.330" | 26.0" | 2702 fps | ••• | |
| ••• | 3.330" | 26.0" | 2789 fps | ••• | |
| ••• | 3.330" | 26.0" | 2877 fps | ••• | |
| ••• | 3.330" | 26.0" | 2663 fps | ••• | |
| ••• | 3.330" | 26.0" | 2752 fps | ••• | |
| ••• | 3.330" | 26.0" | 2841 fps | ••• | |
| ••• | 3.330" | 26.0" | 2523 fps | ••• | |
| ••• | 3.330" | 26.0" | 2619 fps | ••• | |
| ••• | 3.330" | 26.0" | 2714 fps | ••• | |
| ••• | 3.330" | 26.0" | 2705 fps | ••• | |
| ••• | 3.330" | 26.0" | 2793 fps | ••• | |
| ••• | 3.330" | 26.0" | 2882 fps | ••• | |
| ••• | 3.330" | 26.0" | 2737 fps | ••• | |
| ••• | 3.330" | 26.0" | 2823 fps | ••• | |
| ••• | 3.330" | 26.0" | 2911 fps | ••• | |
| ••• | 3.330" | 26.0" | 2804 fps | ••• | |
| ••• | 3.330" | 26.0" | 2903 fps | ••• | |
| ••• | 3.330" | 26.0" | 3000 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.