Load data for .25 WSSM + 100gr Speer Hot-Cor
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 | 100gr | Hot-Cor
Cartridge:.25 WSSM load data
Case Length (L3):1.670" | 42.4 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.354" | 9.0 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:1:12.5
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Community Loads for .25 WSSM + 100gr Speer Hot-Cor
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) |
|---|---|---|---|---|---|
| 44.0 gr | 2.270" | — | 2999 fps | ••• | |
| 48.0 gr | 2.270" | — | 3264 fps | ••• | |
| 35.0 gr | 2.270" | — | 2969 fps | ••• | |
| ••• | 2.270" | — | 2835 fps | ••• | |
| ••• | 2.270" | — | 3086 fps | ••• | |
| ••• | 2.270" | — | 2925 fps | ••• | |
| ••• | 2.270" | — | 3188 fps | ••• | |
| ••• | 2.270" | — | 2972 fps | ••• | |
| ••• | 2.270" | — | 3225 fps | ••• | |
| ••• | 2.270" | — | 3011 fps | ••• | |
| ••• | 2.270" | — | 3269 fps | ••• | |
| ••• | 2.270" | — | 3032 fps | ••• | |
| ••• | 2.270" | — | 2882 fps | ••• | |
| ••• | 2.270" | — | 3132 fps | ••• | |
| ••• | 2.270" | — | 3028 fps | ••• | |
| ••• | 2.270" | — | 2960 fps | ••• | |
| ••• | 2.270" | — | 3203 fps | ••• | |
| ••• | 2.270" | — | 2792 fps | ••• | |
| ••• | 2.270" | — | 3067 fps | ••• | |
| ••• | 2.270" | — | 3075 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.