Load data for .338-378 Weath. Mag. + 300gr Sierra HPBT LR MatchKing
280 suitable loads across 53 powder(s) for cartridge .338-378 Weath. Mag. with 300gr Sierra HPBT LR MatchKing bullet.
The most recommended powders for this combination are ADI AR 2218, Vihtavuori N570 and Alliant Reloder-33.
Based on C.I.P., the max. allowed case length is 2.913 in / 73.99 mm, the max. cartridge length is 3.763 in / 95.58 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Based on C.I.P., the max. allowed case length is 2.913 in / 73.99 mm, the max. cartridge length is 3.763 in / 95.58 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Load Specifications
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Community Loads for .338-378 Weath. Mag. + 300gr Sierra HPBT LR MatchKing
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) |
|---|---|---|---|---|---|
| 88.6 gr | 3.750" | 24.0" | 2401 fps | ••• | |
| 91.9 gr | 3.750" | 24.0" | 2475 fps | ••• | |
| 94.7 gr | 3.750" | 24.0" | 2535 fps | ••• | |
| ••• | 3.750" | 24.0" | 2538 fps | ••• | |
| ••• | 3.750" | 24.0" | 2583 fps | ••• | |
| ••• | 3.750" | 24.0" | 2635 fps | ••• | |
| ••• | 3.750" | 24.0" | 2687 fps | ••• | |
| ••• | 3.750" | 24.0" | 2774 fps | ••• | |
| ••• | 3.750" | 24.0" | 2423 fps | ••• | |
| ••• | 3.750" | 24.0" | 2483 fps | ••• | |
| ••• | 3.750" | 24.0" | 2517 fps | ••• | |
| ••• | 3.750" | 24.0" | 2530 fps | ••• | |
| ••• | 3.750" | 24.0" | 2553 fps | ••• | |
| ••• | 3.750" | 24.0" | 2563 fps | ••• | |
| ••• | 3.750" | 24.0" | 2572 fps | ••• | |
| ••• | 3.750" | 24.0" | 2609 fps | ••• | |
| ••• | 3.750" | 24.0" | 2652 fps | ••• | |
| ••• | 3.750" | 24.0" | 2701 fps | ••• | |
| ••• | 3.750" | 24.0" | 2495 fps | ••• | |
| ••• | 3.750" | 24.0" | 2549 fps | ••• | |
| ••• | 3.750" | 24.0" | 2595 fps | ••• | |
| ••• | 3.750" | 24.0" | 2635 fps | ••• | |
| ••• | 3.750" | 24.0" | 2671 fps | ••• | |
| ••• | 3.750" | 24.0" | 2478 fps | ••• | |
| ••• | 3.750" | 24.0" | 2517 fps | ••• | |
| ••• | 3.750" | 24.0" | 2401 fps | ••• | |
| ••• | 3.750" | 24.0" | 2439 fps | ••• | |
| ••• | 3.750" | 24.0" | 2467 fps | ••• | |
| ••• | 3.750" | 24.0" | 2494 fps | ••• | |
| ••• | 3.750" | 24.0" | 2521 fps | ••• | |
| ••• | 3.750" | 24.0" | 2545 fps | ••• | |
| ••• | 3.750" | 24.0" | 2595 fps | ••• | |
| ••• | 3.750" | 24.0" | 2639 fps | ••• | |
| ••• | 3.750" | 24.0" | 2678 fps | ••• | |
| ••• | 3.750" | 24.0" | 2394 fps | ••• | |
| ••• | 3.750" | 24.0" | 2485 fps | ••• | |
| ••• | 3.750" | 24.0" | 2605 fps | ••• | |
| ••• | 3.750" | 24.0" | 2653 fps | ••• | |
| ••• | 3.750" | 24.0" | 2400 fps | ••• | |
| ••• | 3.750" | 24.0" | 2449 fps | ••• | |
| ••• | 3.750" | 24.0" | 2497 fps | ••• | |
| ••• | 3.750" | 24.0" | 2549 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.