Load data for .300 Win. Mag. + 150gr Sierra RN Prohunter
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 | 150gr | RN Prohunter
Cartridge:.300 Win. Mag. load data
Case Length (L3):2.620" | 66.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.308" | 7.8 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:Stabilizes in any common twist
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Community Loads for .300 Win. Mag. + 150gr Sierra RN Prohunter
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) |
|---|---|---|---|---|---|
| 65.6 gr | 3.340" | 24.0" | 3035 fps | ••• | |
| 67.6 gr | 3.340" | 24.0" | 3106 fps | ••• | |
| 66.0 gr | 3.340" | 24.0" | 2896 fps | ••• | |
| ••• | 3.340" | 24.0" | 2976 fps | ••• | |
| ••• | 3.340" | 24.0" | 3052 fps | ••• | |
| ••• | 3.340" | 24.0" | 3126 fps | ••• | |
| ••• | 3.340" | 24.0" | 2951 fps | ••• | |
| ••• | 3.340" | 24.0" | 3033 fps | ••• | |
| ••• | 3.340" | 24.0" | 2752 fps | ••• | |
| ••• | 3.340" | 24.0" | 2815 fps | ••• | |
| ••• | 3.340" | 24.0" | 2886 fps | ••• | |
| ••• | 3.340" | 24.0" | 2841 fps | ••• | |
| ••• | 3.340" | 24.0" | 2901 fps | ••• | |
| ••• | 3.340" | 24.0" | 2974 fps | ••• | |
| ••• | 3.340" | 24.0" | 3057 fps | ••• | |
| ••• | 3.340" | 24.0" | 3148 fps | ••• | |
| ••• | 3.340" | 24.0" | 2773 fps | ••• | |
| ••• | 3.340" | 24.0" | 2859 fps | ••• | |
| ••• | 3.340" | 24.0" | 2955 fps | ••• | |
| ••• | 3.340" | 24.0" | 3052 fps | ••• | |
| ••• | 3.340" | 24.0" | 2737 fps | ••• | |
| ••• | 3.340" | 24.0" | 2812 fps | ••• | |
| ••• | 3.340" | 24.0" | 2891 fps | ••• | |
| ••• | 3.340" | 24.0" | 2980 fps | ••• | |
| ••• | 3.340" | 24.0" | 2933 fps | ••• | |
| ••• | 3.340" | 24.0" | 3006 fps | ••• | |
| ••• | 3.340" | 24.0" | 2743 fps | ••• | |
| ••• | 3.340" | 24.0" | 2818 fps | ••• | |
| ••• | 3.340" | 24.0" | 2900 fps | ••• | |
| ••• | 3.340" | 24.0" | 2976 fps | ••• | |
| ••• | 3.340" | 24.0" | 2893 fps | ••• | |
| ••• | 3.340" | 24.0" | 2964 fps | ••• | |
| ••• | 3.340" | 24.0" | 3038 fps | ••• | |
| ••• | 3.340" | 24.0" | 3113 fps | ••• | |
| ••• | 3.340" | 24.0" | 2707 fps | ••• | |
| ••• | 3.340" | 24.0" | 2793 fps | ••• | |
| ••• | 3.340" | 24.0" | 2887 fps | ••• | |
| ••• | 3.340" | 24.0" | 2742 fps | ••• | |
| ••• | 3.340" | 24.0" | 2820 fps | ••• | |
| ••• | 3.340" | 24.0" | 2904 fps | ••• | |
| ••• | 3.340" | 24.0" | 2986 fps | ••• | |
| ••• | 3.340" | 24.0" | 3078 fps | ••• | |
| ••• | 3.340" | 24.0" | 2764 fps | ••• | |
| ••• | 3.340" | 24.0" | 2848 fps | ••• | |
| ••• | 3.340" | 24.0" | 2940 fps | ••• | |
| ••• | 3.340" | 24.0" | 3034 fps | ••• | |
| ••• | 3.340" | 24.0" | 2741 fps | ••• | |
| ••• | 3.340" | 24.0" | 2807 fps | ••• | |
| ••• | 3.340" | 24.0" | 2874 fps | ••• | |
| ••• | 3.340" | 24.0" | 2956 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.