Load data for .257 Weath. Mag. + 117gr Sierra GameKing
374 suitable loads across 70 powder(s) for cartridge .257 Weath. Mag. with 117gr Sierra GameKing bullet.
The most recommended powders for this combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Vihtavuori N560.
Based on C.I.P., the max. allowed case length is 2.549 in / 64.74 mm, the max. cartridge length is 3.209 in / 81.51 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Based on C.I.P., the max. allowed case length is 2.549 in / 64.74 mm, the max. cartridge length is 3.209 in / 81.51 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Load Specifications
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Community Loads for .257 Weath. Mag. + 117gr 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) |
|---|---|---|---|---|---|
| 56.4 gr | 3.170" | 24.0" | 2784 fps | ••• | |
| 59.2 gr | 3.170" | 24.0" | 2900 fps | ••• | |
| 61.9 gr | 3.170" | 24.0" | 3008 fps | ••• | |
| ••• | 3.170" | 24.0" | 3036 fps | ••• | |
| ••• | 3.170" | 24.0" | 3087 fps | ••• | |
| ••• | 3.170" | 24.0" | 2848 fps | ••• | |
| ••• | 3.170" | 24.0" | 2982 fps | ••• | |
| ••• | 3.170" | 24.0" | 2953 fps | ••• | |
| ••• | 3.170" | 24.0" | 2728 fps | ••• | |
| ••• | 3.170" | 24.0" | 2811 fps | ••• | |
| ••• | 3.170" | 24.0" | 2937 fps | ••• | |
| ••• | 3.170" | 24.0" | 3085 fps | ••• | |
| ••• | 3.170" | 24.0" | 3174 fps | ••• | |
| ••• | 3.170" | 24.0" | 2856 fps | ••• | |
| ••• | 3.170" | 24.0" | 2955 fps | ••• | |
| ••• | 3.170" | 24.0" | 2811 fps | ••• | |
| ••• | 3.170" | 24.0" | 2933 fps | ••• | |
| ••• | 3.170" | 24.0" | 3045 fps | ••• | |
| ••• | 3.170" | 24.0" | 3096 fps | ••• | |
| ••• | 3.170" | 24.0" | 2610 fps | ••• | |
| ••• | 3.170" | 24.0" | 2735 fps | ••• | |
| ••• | 3.170" | 24.0" | 2852 fps | ••• | |
| ••• | 3.170" | 24.0" | 2956 fps | ••• | |
| ••• | 3.170" | 24.0" | 3049 fps | ••• | |
| ••• | 3.170" | 24.0" | 3092 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.