Load data for .378 Weath. Mag. + 300gr Sierra GameKing
493 suitable loads across 77 powder(s) for cartridge .378 Weath. Mag. with 300gr Sierra GameKing bullet.
The most recommended powders for this combination are Vihtavuori N560, Norma MRP and Accurate MAGPRO.
Based on C.I.P., the max. allowed case length is 2.913 in / 73.99 mm, the max. cartridge length is 3.655 in / 92.84 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Based on C.I.P., the max. allowed case length is 2.913 in / 73.99 mm, the max. cartridge length is 3.655 in / 92.84 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Load Specifications
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Community Loads for .378 Weath. Mag. + 300gr Sierra GameKing
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) |
|---|---|---|---|---|---|
| 103.0 gr | 3.655" | 26.0" | 2714 fps | ••• | |
| 105.8 gr | 3.655" | 26.0" | 2783 fps | ••• | |
| 108.6 gr | 3.655" | 26.0" | 2852 fps | ••• | |
| ••• | 3.655" | 26.0" | 2884 fps | ••• | |
| ••• | 3.655" | 26.0" | 2682 fps | ••• | |
| ••• | 3.655" | 26.0" | 2751 fps | ••• | |
| ••• | 3.655" | 26.0" | 2820 fps | ••• | |
| ••• | 3.655" | 26.0" | 2761 fps | ••• | |
| ••• | 3.655" | 26.0" | 2832 fps | ••• | |
| ••• | 3.655" | 26.0" | 2690 fps | ••• | |
| ••• | 3.655" | 26.0" | 2752 fps | ••• | |
| ••• | 3.655" | 26.0" | 2686 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.