Load data for .300 Rem. Ultra Mag. + 165gr Sierra GameKing
The most recommended powders for this combination are Hodgdon Retumbo, Winchester StaBALL HD and ReloadSwiss RS 76.
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 64,977 PSI / 4,480 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 64,977 PSI / 4,480 bar.
Load Specifications
ImperialMetric
Bullet:.308 | 165gr | GameKing
Cartridge:.300 Rem. Ultra Mag. load data
Case Length (L3):2.850" | 72.4 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.506" | 12.9 mm
Case Capacity:112.5 gow | 7.29 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):64,977 psi | 4,480 bar
Barrel Length:24.0" | 610 mm
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Community Loads for .300 Rem. Ultra Mag. + 165gr 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) |
|---|---|---|---|---|---|
| 85.7 gr | 3.598" | 24.0" | 2817 fps | ••• | |
| 89.3 gr | 3.598" | 24.0" | 2922 fps | ••• | |
| 90.9 gr | 3.598" | 24.0" | 2968 fps | ••• | |
| ••• | 3.598" | 24.0" | 3012 fps | ••• | |
| ••• | 3.598" | 24.0" | 3056 fps | ••• | |
| ••• | 3.598" | 24.0" | 3094 fps | ••• | |
| ••• | 3.598" | 24.0" | 2966 fps | ••• | |
| ••• | 3.598" | 24.0" | 3025 fps | ••• | |
| ••• | 3.598" | 24.0" | 2917 fps | ••• | |
| ••• | 3.598" | 24.0" | 2963 fps | ••• | |
| ••• | 3.598" | 24.0" | 2987 fps | ••• | |
| ••• | 3.598" | 24.0" | 3010 fps | ••• | |
| ••• | 3.598" | 24.0" | 2916 fps | ••• | |
| ••• | 3.598" | 24.0" | 3007 fps | ••• | |
| ••• | 3.598" | 24.0" | 3056 fps | ••• | |
| ••• | 3.598" | 24.0" | 3104 fps | ••• | |
| ••• | 3.598" | 24.0" | 3149 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.