Load data for .300 H&H Mag. + 180gr Sierra Tipped GameKing
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 62,366 PSI / 4,300 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 62,366 PSI / 4,300 bar.
Load Specifications
ImperialMetric
Cartridge:.300 H&H Mag. load data
Case Length (L3):2.850" | 72.4 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.558" | 14.2 mm
Case Capacity:85.9 gow | 5.57 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
Get PRO license to unlock all data and calculators
Community Loads for .300 H&H Mag. + 180gr Sierra Tipped 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) |
|---|---|---|---|---|---|
| 58.5 gr | 3.580" | 24.0" | 2722 fps | ••• | |
| 65.2 gr | 3.580" | 24.0" | 2862 fps | ••• | |
| 64.2 gr | 3.580" | 24.0" | 2624 fps | ••• | |
| ••• | 3.580" | 24.0" | 2962 fps | ••• | |
| ••• | 3.580" | 24.0" | 2562 fps | ••• | |
| ••• | 3.580" | 24.0" | 2739 fps | ••• | |
| ••• | 3.580" | 24.0" | 2913 fps | ••• | |
| ••• | 3.580" | 24.0" | 2836 fps | ••• | |
| ••• | 3.580" | 24.0" | 2690 fps | ••• | |
| ••• | 3.580" | 24.0" | 2835 fps | ••• | |
| ••• | 3.580" | 24.0" | 2436 fps | ••• | |
| ••• | 3.580" | 24.0" | 2745 fps | ••• | |
| ••• | 3.580" | 24.0" | 2693 fps | ••• | |
| ••• | 3.580" | 24.0" | 2885 fps | ••• | |
| ••• | 3.580" | 24.0" | 2704 fps | ••• | |
| ••• | 3.580" | 24.0" | 2915 fps | ••• | |
| ••• | 3.580" | 24.0" | 2693 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.