Load data for .340 Weath. Mag. + 250gr Sierra MatchKing
Based on C.I.P., the max. allowed case length is 2.825 in / 71.76 mm, the max. cartridge length is 3.675 in / 93.35 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Based on C.I.P., the max. allowed case length is 2.825 in / 71.76 mm, the max. cartridge length is 3.675 in / 93.35 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Load Specifications
ImperialMetric
Bullet:.338 | 250gr | MatchKing
Cartridge:.340 Weath. Mag. load data
Case Length (L3):2.825" | 71.8 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.775" | 19.7 mm
Case Capacity:100 gow | 6.48 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):63,817 psi | 4,400 bar
Barrel Length:26.0" | 660 mm
Min. Twist Rate:1:12.5
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Community Loads for .340 Weath. Mag. + 250gr Sierra 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) |
|---|---|---|---|---|---|
| 72.1 gr | 3.675" | 26.0" | 2464 fps | ••• | |
| 74.8 gr | 3.675" | 26.0" | 2549 fps | ••• | |
| 77.6 gr | 3.675" | 26.0" | 2637 fps | ••• | |
| ••• | 3.675" | 26.0" | 2720 fps | ••• | |
| ••• | 3.675" | 26.0" | 2603 fps | ••• | |
| ••• | 3.675" | 26.0" | 2742 fps | ••• | |
| ••• | 3.675" | 26.0" | 2884 fps | ••• | |
| ••• | 3.675" | 26.0" | 2628 fps | ••• | |
| ••• | 3.675" | 26.0" | 2709 fps | ••• | |
| ••• | 3.675" | 26.0" | 2786 fps | ••• | |
| ••• | 3.675" | 26.0" | 2581 fps | ••• | |
| ••• | 3.675" | 26.0" | 2661 fps | ••• | |
| ••• | 3.675" | 26.0" | 2741 fps | ••• | |
| ••• | 3.675" | 26.0" | 2820 fps | ••• | |
| ••• | 3.675" | 26.0" | 2858 fps | ••• | |
| ••• | 3.675" | 26.0" | 2647 fps | ••• | |
| ••• | 3.675" | 26.0" | 2736 fps | ••• | |
| ••• | 3.675" | 26.0" | 2825 fps | ••• | |
| ••• | 3.675" | 26.0" | 2655 fps | ••• | |
| ••• | 3.675" | 26.0" | 2730 fps | ••• | |
| ••• | 3.675" | 26.0" | 2657 fps | ••• | |
| ••• | 3.675" | 26.0" | 2742 fps | ••• | |
| ••• | 3.675" | 26.0" | 2557 fps | ••• | |
| ••• | 3.675" | 26.0" | 2642 fps | ••• | |
| ••• | 3.675" | 26.0" | 2730 fps | ••• | |
| ••• | 3.675" | 26.0" | 2535 fps | ••• | |
| ••• | 3.675" | 26.0" | 2611 fps | ••• | |
| ••• | 3.675" | 26.0" | 2687 fps | ••• | |
| ••• | 3.675" | 26.0" | 2760 fps | ••• | |
| ••• | 3.675" | 26.0" | 2758 fps | ••• | |
| ••• | 3.675" | 26.0" | 2523 fps | ••• | |
| ••• | 3.675" | 26.0" | 2616 fps | ••• | |
| ••• | 3.675" | 26.0" | 2709 fps | ••• | |
| ••• | 3.675" | 26.0" | 2546 fps | ••• | |
| ••• | 3.675" | 26.0" | 2615 fps | ••• | |
| ••• | 3.675" | 26.0" | 2685 fps | ••• | |
| ••• | 3.675" | 26.0" | 2592 fps | ••• | |
| ••• | 3.675" | 26.0" | 2649 fps | ••• | |
| ••• | 3.675" | 26.0" | 2675 fps | ••• | |
| ••• | 3.675" | 26.0" | 2739 fps | ••• | |
| ••• | 3.675" | 26.0" | 2756 fps | ••• | |
| ••• | 3.675" | 26.0" | 2829 fps | ••• | |
| ••• | 3.675" | 26.0" | 2838 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.