Load data for .25 WSSM + 120gr Speer Boat-Tail
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 | Boat-Tail
Cartridge:.25 WSSM load data
Case Length (L3):1.670" | 42.4 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.540" | 13.7 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:1:10.5
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Community Loads for .25 WSSM + 120gr Speer Boat-Tail
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) |
|---|---|---|---|---|---|
| 39.0 gr | 2.270" | — | 2652 fps | ••• | |
| 43.0 gr | 2.270" | — | 2903 fps | ••• | |
| 40.0 gr | 2.270" | 24.0" | 2897 fps | ••• | |
| ••• | 2.270" | 24.0" | 2802 fps | ••• | |
| ••• | 2.270" | 24.0" | 3041 fps | ••• | |
| ••• | 2.270" | — | 2694 fps | ••• | |
| ••• | 2.270" | 24.0" | 2943 fps | ••• | |
| ••• | 2.270" | — | 2737 fps | ••• | |
| ••• | 2.270" | — | 2763 fps | ••• | |
| ••• | 2.270" | — | 3008 fps | ••• | |
| ••• | 2.270" | — | 2741 fps | ••• | |
| ••• | 2.270" | — | 2606 fps | ••• | |
| ••• | 2.270" | — | 2845 fps | ••• | |
| ••• | 2.270" | — | 2774 fps | ••• | |
| ••• | 2.270" | — | 2669 fps | ••• | |
| ••• | 2.270" | — | 2900 fps | ••• | |
| ••• | 2.270" | — | 2556 fps | ••• | |
| ••• | 2.270" | — | 2819 fps | ••• | |
| ••• | 2.270" | — | 2763 fps | ••• | |
| ••• | 2.270" | — | 3008 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.