Load data for .25 WSSM + 120gr Sierra HPBT GameKing
Based on C.I.P., the max. allowed case length is 1.670 in / 42.42 mm, the max. cartridge length is 2.360 in / 59.94 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Based on C.I.P., the max. allowed case length is 1.670 in / 42.42 mm, the max. cartridge length is 2.360 in / 59.94 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Load Specifications
ImperialMetric
Bullet:.257 | 120gr | HPBT GameKing
Cartridge:.25 WSSM load data
Case Length (L3):1.670" | 42.4 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.565" | 14.4 mm
Case Capacity:54.3 gow | 3.52 cm³
Primer Size:Large Rifle (LR)
Max. Pressure (C.I.P.):63,817 psi | 4,400 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:10.0
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Community Loads for .25 WSSM + 120gr Sierra HPBT GameKing
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) |
|---|---|---|---|---|---|
| 42.5 gr | 2.360" | 26.0" | 2756 fps | ••• | |
| 43.3 gr | 2.360" | 26.0" | 2806 fps | ••• | |
| 44.1 gr | 2.360" | 26.0" | 2855 fps | ••• | |
| ••• | 2.360" | 26.0" | 2910 fps | ••• | |
| ••• | 2.360" | 26.0" | 2959 fps | ••• | |
| ••• | 2.360" | 26.0" | 3009 fps | ••• | |
| ••• | 2.360" | 26.0" | 2659 fps | ••• | |
| ••• | 2.360" | 26.0" | 2709 fps | ••• | |
| ••• | 2.360" | 26.0" | 2761 fps | ••• | |
| ••• | 2.360" | 26.0" | 2804 fps | ••• | |
| ••• | 2.360" | 26.0" | 2855 fps | ••• | |
| ••• | 2.360" | 26.0" | 2698 fps | ••• | |
| ••• | 2.360" | 26.0" | 2745 fps | ••• | |
| ••• | 2.360" | 26.0" | 2791 fps | ••• | |
| ••• | 2.360" | 26.0" | 2837 fps | ••• | |
| ••• | 2.360" | 26.0" | 2882 fps | ••• | |
| ••• | 2.360" | 26.0" | 2667 fps | ••• | |
| ••• | 2.360" | 26.0" | 2714 fps | ••• | |
| ••• | 2.360" | 26.0" | 2768 fps | ••• | |
| ••• | 2.360" | 26.0" | 2816 fps | ••• | |
| ••• | 2.360" | 26.0" | 2861 fps | ••• | |
| ••• | 2.360" | 26.0" | 2914 fps | ••• | |
| ••• | 2.360" | 26.0" | 2960 fps | ••• | |
| ••• | 2.360" | 26.0" | 2752 fps | ••• | |
| ••• | 2.360" | 26.0" | 2805 fps | ••• | |
| ••• | 2.360" | 26.0" | 2856 fps | ••• | |
| ••• | 2.360" | 26.0" | 2909 fps | ••• | |
| ••• | 2.360" | 26.0" | 2961 fps | ••• | |
| ••• | 2.275" | 24.0" | 2735 fps | ••• | |
| ••• | 2.360" | 26.0" | 2716 fps | ••• | |
| ••• | 2.275" | 24.0" | 2749 fps | ••• | |
| ••• | 2.360" | 26.0" | 2784 fps | ••• | |
| ••• | 2.360" | 26.0" | 2850 fps | ••• | |
| ••• | 2.360" | 26.0" | 2915 fps | ••• | |
| ••• | 2.360" | 26.0" | 2769 fps | ••• | |
| ••• | 2.360" | 26.0" | 2825 fps | ••• | |
| ••• | 2.360" | 26.0" | 2885 fps | ••• | |
| ••• | 2.360" | 26.0" | 2940 fps | ••• | |
| ••• | 2.360" | 26.0" | 2994 fps | ••• | |
| ••• | 2.360" | 26.0" | 3053 fps | ••• | |
| ••• | 2.360" | 26.0" | 2729 fps | ••• | |
| ••• | 2.360" | 26.0" | 2780 fps | ••• | |
| ••• | 2.360" | 26.0" | 2824 fps | ••• | |
| ••• | 2.360" | 26.0" | 2875 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.