Load data for .303 British + 125gr Sierra Pro-Hunter
Based on C.I.P., the max. allowed case length is 2.222 in / 56.44 mm, the max. cartridge length is 3.075 in / 78.11 mm, and the max. allowed pressure is 52,939 PSI / 3,650 bar.
Based on C.I.P., the max. allowed case length is 2.222 in / 56.44 mm, the max. cartridge length is 3.075 in / 78.11 mm, and the max. allowed pressure is 52,939 PSI / 3,650 bar.
Load Specifications
ImperialMetric
Bullet:.311 | 125gr | Pro-Hunter
Cartridge:.303 British load data
Case Length (L3):2.213" | 56.2 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.311" | 7.9 mm
Case Capacity:56 gow | 3.63 cm³
Primer Size:Large Rifle (LR)
Max. Pressure (C.I.P.):52,939 psi | 3,650 bar
Barrel Length:25.0" | 635 mm
Min. Twist Rate:Stabilizes in any common twist
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Community Loads for .303 British + 125gr 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) |
|---|---|---|---|---|---|
| 40.0 gr | 3.075" | 25.0" | 2669 fps | ••• | |
| 41.6 gr | 3.075" | 25.0" | 2755 fps | ••• | |
| 42.4 gr | 3.075" | 25.0" | 2798 fps | ••• | |
| ••• | 3.075" | 25.0" | 2841 fps | ••• | |
| ••• | 3.075" | 25.0" | 2667 fps | ••• | |
| ••• | 3.075" | 25.0" | 2734 fps | ••• | |
| ••• | 3.075" | 25.0" | 2799 fps | ••• | |
| ••• | 3.075" | 25.0" | 2672 fps | ••• | |
| ••• | 3.075" | 25.0" | 2717 fps | ••• | |
| ••• | 3.075" | 25.0" | 2587 fps | ••• | |
| ••• | 3.075" | 25.0" | 2667 fps | ••• | |
| ••• | 3.075" | 25.0" | 2748 fps | ••• | |
| ••• | 3.075" | 25.0" | 2788 fps | ••• | |
| ••• | 3.075" | 25.0" | 2827 fps | ••• | |
| ••• | 3.075" | 25.0" | 2615 fps | ••• | |
| ••• | 3.075" | 25.0" | 2716 fps | ••• | |
| ••• | 3.075" | 25.0" | 2816 fps | ••• | |
| ••• | 3.075" | 25.0" | 2867 fps | ••• | |
| ••• | 3.075" | 25.0" | 2917 fps | ••• | |
| ••• | 3.075" | 25.0" | 2574 fps | ••• | |
| ••• | 3.075" | 25.0" | 2670 fps | ••• | |
| ••• | 3.075" | 25.0" | 2765 fps | ••• | |
| ••• | 3.075" | 25.0" | 2812 fps | ••• | |
| ••• | 3.075" | 25.0" | 2589 fps | ••• | |
| ••• | 3.075" | 25.0" | 2679 fps | ••• | |
| ••• | 3.075" | 25.0" | 2768 fps | ••• | |
| ••• | 3.075" | 25.0" | 2569 fps | ••• | |
| ••• | 3.075" | 25.0" | 2665 fps | ••• | |
| ••• | 3.075" | 25.0" | 2758 fps | ••• | |
| ••• | 3.075" | 25.0" | 2808 fps | ••• | |
| ••• | 3.075" | 25.0" | 2801 fps | ••• | |
| ••• | 3.075" | 25.0" | 2622 fps | ••• | |
| ••• | 3.075" | 25.0" | 2714 fps | ••• | |
| ••• | 3.075" | 25.0" | 2805 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.