Load data for .280 Ackley Improved + 160gr Barnes LRX BT
The most recommended powders for this combination are Vihtavuori N555.
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 | 160gr | LRX BT
Cartridge:.280 Ackley Improved load data
Case Length (L3):2.540" | 64.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.742" | 18.8 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
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Community Loads for .280 Ackley Improved + 160gr Barnes LRX BT
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) |
|---|---|---|---|---|---|
| 55.5 gr | 3.330" | 20.0" | 2667 fps | ••• | |
| 57.0 gr | 3.330" | 20.0" | 2703 fps | ••• | |
| 60.0 gr | 3.330" | 20.0" | 2841 fps | ••• | |
| ••• | 3.495" | — | 2386 fps | ••• | |
| ••• | 3.330" | 20.0" | 2723 fps | ••• | |
| ••• | 3.495" | — | 2715 fps | ••• | |
| ••• | 3.495" | — | 2659 fps | ••• | |
| ••• | 3.495" | — | 2439 fps | ••• | |
| ••• | 3.495" | — | 2721 fps | ••• | |
| ••• | 3.495" | — | 2548 fps | ••• | |
| ••• | 3.495" | — | 2807 fps | ••• | |
| ••• | 3.495" | 26.0" | 2930 fps | ••• | |
| ••• | 3.544" | 22.0" | 2776 fps | ••• | |
| ••• | 3.495" | — | 2636 fps | ••• | |
| ••• | 3.495" | — | 2878 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.