Load data for .300 Win. Mag. + 165gr Speer Grand Slam
Based on C.I.P., the max. allowed case length is 2.620 in / 66.55 mm, the max. cartridge length is 3.340 in / 84.84 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.
Based on C.I.P., the max. allowed case length is 2.620 in / 66.55 mm, the max. cartridge length is 3.340 in / 84.84 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.
Load Specifications
ImperialMetric
Bullet:.308 | 165gr | Grand Slam
Cartridge:.300 Win. Mag. load data
Case Length (L3):2.620" | 66.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.410" | 10.4 mm
Case Capacity:90.5 gow | 5.86 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 Win. 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) |
|---|---|---|---|---|---|
| 72.0 gr | 3.290" | — | 2732 fps | ••• | |
| 76.0 gr | 3.290" | — | 2879 fps | ••• | |
| 69.0 gr | 3.290" | — | 2907 fps | ••• | |
| ••• | 3.290" | — | 3053 fps | ••• | |
| ••• | 3.290" | — | 2880 fps | ••• | |
| ••• | 3.290" | — | 2800 fps | ••• | |
| ••• | 3.290" | — | 3056 fps | ••• | |
| ••• | 3.290" | — | 2832 fps | ••• | |
| ••• | 3.290" | — | 2982 fps | ••• | |
| ••• | 3.290" | — | 2809 fps | ••• | |
| ••• | 3.290" | — | 2962 fps | ••• | |
| ••• | 3.290" | — | 2824 fps | ••• | |
| ••• | 3.290" | — | 3082 fps | ••• | |
| ••• | 3.290" | — | 2758 fps | ••• | |
| ••• | 3.290" | — | 3079 fps | ••• | |
| ••• | 3.290" | — | 2784 fps | ••• | |
| ••• | 3.290" | — | 2905 fps | ••• | |
| ••• | 3.290" | — | 2816 fps | ••• | |
| ••• | 3.290" | — | 2799 fps | ••• | |
| ••• | 3.290" | — | 2951 fps | ••• | |
| ••• | 3.290" | — | 2860 fps | ••• | |
| ••• | 3.290" | — | 2886 fps | ••• | |
| ••• | 3.290" | — | 3026 fps | ••• | |
| ••• | 3.290" | — | 2865 fps | ••• | |
| ••• | 3.290" | — | 3004 fps | ••• | |
| ••• | 3.290" | — | 2856 fps | ••• | |
| ••• | 3.290" | — | 2995 fps | ••• | |
| ••• | 3.290" | — | 2912 fps | ••• | |
| ••• | 3.290" | — | 3033 fps | ••• | |
| ••• | 3.290" | — | 3193 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.