Load data for .300 Win. Mag. + 180gr Sierra GameKing
The most recommended powders for this combination are Hodgdon H4831, ADI AR 2217 and Hodgdon H4831 SC.
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 | 180gr | GameKing
Cartridge:.300 Win. Mag. load data
Case Length (L3):2.620" | 66.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.555" | 14.1 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:1:12.5
Get PRO license to unlock all data and calculators
Community Loads for .300 Win. Mag. + 180gr 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) |
|---|---|---|---|---|---|
| 66.7 gr | 3.340" | 24.0" | 2801 fps | ••• | |
| 72.5 gr | 3.405" | 24.0" | 2672 fps | ••• | |
| 60.6 gr | 3.340" | 24.0" | 2693 fps | ••• | |
| ••• | 3.340" | 24.0" | 2790 fps | ••• | |
| ••• | 3.340" | 24.0" | 2878 fps | ••• | |
| ••• | 3.340" | 24.0" | 2669 fps | ••• | |
| ••• | 3.340" | 24.0" | 2755 fps | ••• | |
| ••• | 3.340" | 24.0" | 2663 fps | ••• | |
| ••• | 3.340" | 24.0" | 2734 fps | ••• | |
| ••• | 3.340" | 24.0" | 2663 fps | ••• | |
| ••• | 3.340" | 24.0" | 2741 fps | ••• | |
| ••• | 3.340" | 24.0" | 2817 fps | ••• | |
| ••• | 3.340" | 24.0" | 2900 fps | ••• | |
| ••• | 3.340" | 24.0" | 2639 fps | ••• | |
| ••• | 3.340" | 24.0" | 2707 fps | ••• | |
| ••• | 3.340" | 24.0" | 2781 fps | ••• | |
| ••• | 3.340" | 24.0" | 2551 fps | ••• | |
| ••• | 3.340" | 24.0" | 2662 fps | ••• | |
| ••• | 3.340" | 24.0" | 2769 fps | ••• | |
| ••• | 3.340" | 24.0" | 2722 fps | ••• | |
| ••• | 3.340" | 24.0" | 2799 fps | ••• | |
| ••• | 3.340" | 24.0" | 2879 fps | ••• | |
| ••• | 3.340" | 24.0" | 2705 fps | ••• | |
| ••• | 3.340" | 24.0" | 2575 fps | ••• | |
| ••• | 3.340" | 24.0" | 2664 fps | ••• | |
| ••• | 3.340" | 24.0" | 2746 fps | ••• | |
| ••• | 3.340" | 24.0" | 2641 fps | ••• | |
| ••• | 3.340" | 24.0" | 2733 fps | ••• | |
| ••• | 3.340" | 24.0" | 2815 fps | ••• | |
| ••• | 3.340" | 24.0" | 2757 fps | ••• | |
| ••• | 3.340" | 24.0" | 2831 fps | ••• | |
| ••• | 3.340" | 24.0" | 2909 fps | ••• | |
| ••• | 3.340" | 24.0" | 2577 fps | ••• | |
| ••• | 3.340" | 24.0" | 2659 fps | ••• | |
| ••• | 3.340" | 24.0" | 2745 fps | ••• | |
| ••• | 3.340" | 24.0" | 2693 fps | ••• | |
| ••• | 3.340" | 24.0" | 2773 fps | ••• | |
| ••• | 3.340" | 24.0" | 2854 fps | ••• | |
| ••• | 3.340" | 24.0" | 2608 fps | ••• | |
| ••• | 3.340" | 24.0" | 2687 fps | ••• | |
| ••• | 3.340" | 24.0" | 2774 fps | ••• | |
| ••• | 3.340" | 24.0" | 2647 fps | ••• | |
| ••• | 3.340" | 24.0" | 2646 fps | ••• | |
| ••• | 3.340" | 24.0" | 2716 fps | ••• | |
| ••• | 3.340" | 24.0" | 2793 fps | ••• | |
| ••• | 3.340" | 24.0" | 2675 fps | ••• | |
| ••• | 3.340" | 24.0" | 2785 fps | ••• | |
| ••• | 3.340" | 24.0" | 2671 fps | ••• | |
| ••• | 3.340" | 24.0" | 2742 fps | ••• | |
| ••• | 3.340" | 24.0" | 2823 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.