Load data for .375 Rem. Ultra Mag. + 300gr Sierra GameKing
The most recommended powders for this combination are Vihtavuori N560.
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 63,817 PSI / 4,400 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 63,817 PSI / 4,400 bar.
Load Specifications
ImperialMetric
Bullet:.375 | 300gr | GameKing
Cartridge:.375 Rem. Ultra Mag. load data
Case Length (L3):2.850" | 72.4 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.682" | 17.3 mm
Case Capacity:117 gow | 7.58 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):63,817 psi | 4,400 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:6.0
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Community Loads for .375 Rem. Ultra 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) |
|---|---|---|---|---|---|
| 83.9 gr | 3.600" | 24.0" | 2547 fps | ••• | |
| 85.7 gr | 3.600" | 24.0" | 2591 fps | ••• | |
| 87.4 gr | 3.600" | 24.0" | 2635 fps | ••• | |
| ••• | 3.600" | 24.0" | 2677 fps | ••• | |
| ••• | 3.600" | 24.0" | 2540 fps | ••• | |
| ••• | 3.600" | 24.0" | 2581 fps | ••• | |
| ••• | 3.600" | 24.0" | 2623 fps | ••• | |
| ••• | 3.600" | 24.0" | 2666 fps | ••• | |
| ••• | 3.600" | 24.0" | 2712 fps | ••• | |
| ••• | 3.600" | 24.0" | 2506 fps | ••• | |
| ••• | 3.600" | 24.0" | 2543 fps | ••• | |
| ••• | 3.600" | 24.0" | 2579 fps | ••• | |
| ••• | 3.600" | 24.0" | 2616 fps | ••• | |
| ••• | 3.600" | 24.0" | 2554 fps | ••• | |
| ••• | 3.600" | 24.0" | 2593 fps | ••• | |
| ••• | 3.600" | 24.0" | 2631 fps | ••• | |
| ••• | 3.600" | 24.0" | 2674 fps | ••• | |
| ••• | 3.600" | 24.0" | 2476 fps | ••• | |
| ••• | 3.600" | 24.0" | 2529 fps | ••• | |
| ••• | 3.600" | 24.0" | 2584 fps | ••• | |
| ••• | 3.600" | 24.0" | 2644 fps | ••• | |
| ••• | 3.600" | 24.0" | 2669 fps | ••• | |
| ••• | 3.600" | 24.0" | 2717 fps | ••• | |
| ••• | 3.600" | 24.0" | 2514 fps | ••• | |
| ••• | 3.600" | 24.0" | 2569 fps | ••• | |
| ••• | 3.600" | 24.0" | 2623 fps | ••• | |
| ••• | 3.600" | 24.0" | 2565 fps | ••• | |
| ••• | 3.600" | 24.0" | 2604 fps | ••• | |
| ••• | 3.600" | 24.0" | 2644 fps | ••• | |
| ••• | 3.600" | 24.0" | 2681 fps | ••• | |
| ••• | 3.600" | 24.0" | 2498 fps | ••• | |
| ••• | 3.600" | 24.0" | 2547 fps | ••• | |
| ••• | 3.600" | 24.0" | 2595 fps | ••• | |
| ••• | 3.600" | 24.0" | 2645 fps | ••• | |
| ••• | 3.600" | 24.0" | 2693 fps | ••• | |
| ••• | 3.600" | 24.0" | 2424 fps | ••• | |
| ••• | 3.600" | 24.0" | 2467 fps | ••• | |
| ••• | 3.600" | 24.0" | 2591 fps | ••• | |
| ••• | 3.600" | 24.0" | 2625 fps | ••• | |
| ••• | 3.600" | 24.0" | 2435 fps | ••• | |
| ••• | 3.600" | 24.0" | 2482 fps | ••• | |
| ••• | 3.600" | 24.0" | 2529 fps | ••• | |
| ••• | 3.600" | 24.0" | 2520 fps | ••• | |
| ••• | 3.600" | 24.0" | 2563 fps | ••• | |
| ••• | 3.600" | 24.0" | 2683 fps | ••• | |
| ••• | 3.600" | 24.0" | 2485 fps | ••• | |
| ••• | 3.600" | 24.0" | 2530 fps | ••• | |
| ••• | 3.600" | 24.0" | 2571 fps | ••• | |
| ••• | 3.600" | 24.0" | 2616 fps | ••• | |
| ••• | 3.600" | 25.6" | 2749 fps | ••• | |
| ••• | 3.600" | 24.0" | 2657 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.