Load data for .300 H&H Mag. + 165gr Speer Grand Slam
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 | 165gr | Grand Slam
Cartridge:.300 H&H Mag. load data
Case Length (L3):2.850" | 72.4 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.465" | 11.8 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:1:15.5
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Community Loads for .300 H&H Mag. + 165gr Speer Grand Slam
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) |
|---|---|---|---|---|---|
| 58.0 gr | 3.355" | — | 2676 fps | ••• | |
| 64.0 gr | 3.355" | — | 2587 fps | ••• | |
| 68.0 gr | 3.355" | — | 2752 fps | ••• | |
| ••• | 3.355" | — | 2755 fps | ••• | |
| ••• | 3.355" | — | 2920 fps | ••• | |
| ••• | 3.355" | — | 2796 fps | ••• | |
| ••• | 3.355" | — | 3048 fps | ••• | |
| ••• | 3.355" | — | 2747 fps | ••• | |
| ••• | 3.355" | — | 2990 fps | ••• | |
| ••• | 3.355" | — | 2685 fps | ••• | |
| ••• | 3.355" | — | 2850 fps | ••• | |
| ••• | 3.355" | — | 2754 fps | ••• | |
| ••• | 3.355" | — | 3026 fps | ••• | |
| ••• | 3.355" | — | 2678 fps | ••• | |
| ••• | 3.355" | — | 2991 fps | ••• | |
| ••• | 3.355" | — | 2894 fps | ••• | |
| ••• | 3.355" | — | 2777 fps | ••• | |
| ••• | 3.355" | — | 2931 fps | ••• | |
| ••• | 3.355" | — | 2863 fps | ••• | |
| ••• | 3.355" | — | 2953 fps | ••• | |
| ••• | 3.355" | — | 2799 fps | ••• | |
| ••• | 3.355" | — | 2820 fps | ••• | |
| ••• | 3.355" | — | 2983 fps | ••• | |
| ••• | 3.355" | — | 2691 fps | ••• | |
| ••• | 3.355" | — | 2872 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.