Load data for .300 H&H Mag. + 150gr Speer Hot-Cor
Based on C.I.P., the max. allowed case length is 2.850 in / 72.39 mm, the max. cartridge length is 3.600 in / 91.44 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.

Based on C.I.P., the max. allowed case length is 2.850 in / 72.39 mm, the max. cartridge length is 3.600 in / 91.44 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.

Load Specifications
ImperialMetric
Bullet:.308 | 150gr | Hot-Cor
Cartridge:.300 H&H Mag. load data
Case Length (L3):2.850" | 72.4 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.472" | 12.0 mm
Case Capacity:85.9 gow | 5.57 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):62,366 psi | 4,300 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:16.0
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Community Loads for .300 H&H Mag. + 150gr 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) |
|---|---|---|---|---|---|
| 68.0 gr | 3.365" | — | 2717 fps | ••• | |
| 72.0 gr | 3.365" | — | 2885 fps | ••• | |
| 64.0 gr | 3.365" | — | 2862 fps | ••• | |
| ••• | 3.365" | — | 3033 fps | ••• | |
| ••• | 3.365" | — | 2908 fps | ••• | |
| ••• | 3.365" | — | 3195 fps | ••• | |
| ••• | 3.365" | — | 2791 fps | ••• | |
| ••• | 3.365" | — | 3071 fps | ••• | |
| ••• | 3.365" | — | 2866 fps | ••• | |
| ••• | 3.365" | — | 3033 fps | ••• | |
| ••• | 3.365" | — | 2792 fps | ••• | |
| ••• | 3.365" | — | 3086 fps | ••• | |
| ••• | 3.365" | — | 2773 fps | ••• | |
| ••• | 3.365" | — | 3114 fps | ••• | |
| ••• | 3.365" | — | 2867 fps | ••• | |
| ••• | 3.365" | — | 2927 fps | ••• | |
| ••• | 3.365" | — | 2829 fps | ••• | |
| ••• | 3.365" | — | 2988 fps | ••• | |
| ••• | 3.365" | — | 2893 fps | ••• | |
| ••• | 3.365" | — | 3051 fps | ••• | |
| ••• | 3.365" | — | 3027 fps | ••• | |
| ••• | 3.365" | — | 3183 fps | ••• | |
| ••• | 3.365" | — | 2969 fps | ••• | |
| ••• | 3.365" | — | 3253 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.