Load Specifications
Bullet Manufacturer:Lehigh Defense
Bullet Weight:230 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.340 Weath. Mag. load data
Case Length (l3):2.825"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:100 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:26"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:11.5
Load data in caliber .340 Weath. Mag. with .338 | 230gr | Lehigh Defense Match Solid bullet and 107 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and ReloadSwiss RS 60.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 56,217 psi | 88% | 2621 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,201 psi | 87% | 2648 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,101 psi | 89% | 2717 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,740 psi | 90% | 2723 fps | 99% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,093 psi | 72% | 2644 fps | 98.8% |
| Accurate 4064 | <<locked>> | 88% | 55,521 psi | 87% | 2700 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,072 psi | 88% | 2805 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 55,535 psi | 87% | 2736 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,623 psi | 89% | 2740 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,983 psi | 85% | 2795 fps | 98% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,447 psi | 85% | 2684 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,927 psi | 88% | 2648 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,840 psi | 88% | 2864 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,985 psi | 89% | 2759 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,421 psi | 90% | 2782 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,174 psi | 90% | 2861 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,810 psi | 86% | 2841 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,939 psi | 83% | 2785 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,383 psi | 73% | 2723 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,772 psi | 69% | 2674 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,276 psi | 60% | 2585 fps | 97.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,559 psi | 78% | 2848 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,405 psi | 87% | 2756 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 54,186 psi | 85% | 2726 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,383 psi | 73% | 2723 fps | 96.9% |
| Bofors RP7 | <<locked>> | 94% | 57,595 psi | 90% | 2762 fps | 99.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,985 psi | 88% | 2664 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,595 psi | 90% | 2762 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,882 psi | 86% | 2746 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 54,969 psi | 86% | 2808 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 92% | 55,361 psi | 87% | 2769 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 84% | 56,130 psi | 88% | 2743 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,087 psi | 89% | 2779 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,086 psi | 88% | 2782 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,390 psi | 87% | 2848 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,911 psi | 56% | 1660 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,392 psi | 90% | 2746 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,695 psi | 89% | 2720 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,260 psi | 88% | 2723 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,869 psi | 88% | 2710 fps | 99.3% |
| IMR 4350 | <<locked>> | 96% | 54,679 psi | 86% | 2743 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,840 psi | 88% | 2740 fps | 99.3% |
| IMR 4831 | <<locked>> | 98% | 56,449 psi | 88% | 2795 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,332 psi | 87% | 2759 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 53,722 psi | 84% | 2726 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 82% | 54,447 psi | 85% | 2684 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,448 psi | 87% | 2707 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,824 psi | 86% | 2664 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,999 psi | 88% | 2713 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,332 psi | 87% | 2730 fps | 99.8% |
| Lovex S070 | <<locked>> | 96% | 56,492 psi | 89% | 2772 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,159 psi | 60% | 2500 fps | 97.2% |
| Norma 201 | <<locked>> | 86% | 57,624 psi | 90% | 2726 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,955 psi | 86% | 2677 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,637 psi | 89% | 2769 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,158 psi | 86% | 2792 fps | 98.1% |
| Norma MRPᴾ | <<locked>> | 100% | 49,095 psi | 77% | 2805 fps | 98.7% |
| Norma URP | <<locked>> | 96% | 54,969 psi | 86% | 2795 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 57,725 psi | 90% | 2799 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,421 psi | 90% | 2848 fps | 99.9% |
| Ramshot TAC | <<locked>> | 82% | 54,375 psi | 85% | 2710 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,302 psi | 85% | 2723 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,477 psi | 57% | 1699 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,013 psi | 86% | 2730 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,752 psi | 86% | 2799 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,433 psi | 85% | 2831 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,724 psi | 87% | 2828 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,882 psi | 86% | 2861 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 54,911 psi | 86% | 2654 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,737 psi | 86% | 2677 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,667 psi | 90% | 2769 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,695 psi | 87% | 2766 fps | 97.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,793 psi | 81% | 2766 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 94% | 57,595 psi | 90% | 2762 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,332 psi | 87% | 2730 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,448 psi | 87% | 2707 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,999 psi | 88% | 2713 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,492 psi | 89% | 2772 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,043 psi | 88% | 2785 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,724 psi | 89% | 2743 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,522 psi | 90% | 2759 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,593 psi | 87% | 2615 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,956 psi | 88% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,390 psi | 87% | 2687 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,300 psi | 80% | 2759 fps | 97.8% |
| Somchem S335 | <<locked>> | 84% | 54,839 psi | 86% | 2608 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,449 psi | 88% | 2726 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,696 psi | 90% | 2762 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 57,725 psi | 90% | 2759 fps | 96.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,276 psi | 90% | 2841 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,460 psi | 82% | 2743 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 84% | 56,043 psi | 88% | 2595 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,926 psi | 86% | 2638 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,434 psi | 87% | 2657 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,724 psi | 87% | 2694 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,479 psi | 90% | 2789 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,194 psi | 71% | 2612 fps | 96.9% |
| Vihtavuori N530 | <<locked>> | 82% | 54,868 psi | 86% | 2684 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,174 psi | 90% | 2703 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,420 psi | 88% | 2795 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,588 psi | 76% | 2743 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,406 psi | 90% | 2759 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,216 psi | 87% | 2730 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,259 psi | 87% | 2812 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,131 psi | 61% | 2710 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,041 psi | 85% | 2720 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,182 psi | 77% | 2684 fps | 97.1% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 52,924 psi | 83% | 2579 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,339 psi | 71% | 2516 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,301 psi | 84% | 2667 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,309 psi | 69% | 2513 fps | 96.8% |
| Accurate 3100 | <<locked>> | 90% | 32,460 psi | 51% | 2379 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 42,960 psi | 67% | 2520 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,937 psi | 50% | 2375 fps | 97% |
| ADI AR 2206H | <<locked>> | 80% | 48,965 psi | 77% | 2638 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,539 psi | 65% | 2500 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 41,597 psi | 65% | 2575 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,097 psi | 80% | 2635 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,286 psi | 82% | 2605 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,034 psi | 71% | 2694 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,481 psi | 65% | 2520 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,498 psi | 70% | 2585 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,126 psi | 50% | 2392 fps | 97.2% |
| Alliant Reloder-17 | 63.4 gr | 80% | 35,926 psi | 56% | 2513 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 41,002 psi | 64% | 2572 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 40,698 psi | 64% | 2612 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 82% | 24,526 psi | 38% | 2201 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 94% | 31,676 psi | 50% | 2418 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 86% | 29,834 psi | 47% | 2421 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,501 psi | 76% | 2651 fps | 99.9% |
| Bofors RP3 | <<locked>> | 80% | 41,191 psi | 65% | 2523 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 40,698 psi | 64% | 2612 fps | 95.2% |
| Bofors RP7 | <<locked>> | 82% | 39,233 psi | 61% | 2454 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,634 psi | 82% | 2618 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,299 psi | 79% | 2661 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,974 psi | 66% | 2536 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 36,709 psi | 58% | 2480 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 82% | 40,103 psi | 63% | 2507 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 49,458 psi | 78% | 2648 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,486 psi | 46% | 2293 fps | 97.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,803 psi | 72% | 2628 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 38,508 psi | 60% | 2549 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,745 psi | 42% | 1483 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,427 psi | 74% | 2602 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 49,588 psi | 78% | 2625 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,656 psi | 68% | 2530 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,108 psi | 72% | 2556 fps | 97.9% |
| IMR 4350 | <<locked>> | 84% | 37,376 psi | 59% | 2438 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,493 psi | 60% | 2438 fps | 96% |
| IMR 4831 | <<locked>> | 80% | 31,053 psi | 49% | 2339 fps | 96.7% |
| IMR 4895 | <<locked>> | 80% | 45,643 psi | 72% | 2612 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 50,415 psi | 79% | 2677 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 51,097 psi | 80% | 2635 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,443 psi | 76% | 2612 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,385 psi | 76% | 2569 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 43,555 psi | 68% | 2526 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,824 psi | 56% | 2388 fps | 96.7% |
| Lovex S070 | <<locked>> | 82% | 36,172 psi | 57% | 2415 fps | 95.6% |
| Lovex S071 | <<locked>> | 96% | 33,359 psi | 52% | 2398 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 47,776 psi | 75% | 2585 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,327 psi | 76% | 2585 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,874 psi | 69% | 2572 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 42,076 psi | 66% | 2572 fps | 95.2% |
| Norma MRP | <<locked>> | 92% | 37,260 psi | 58% | 2572 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 32,256 psi | 51% | 2379 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 80% | 43,714 psi | 69% | 2589 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 33,562 psi | 53% | 2418 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 50,952 psi | 80% | 2657 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,821 psi | 80% | 2674 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,137 psi | 43% | 1519 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,264 psi | 66% | 2520 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,718 psi | 75% | 2694 fps | 100% |
| ReloadSwiss RS 60 | 63.4 gr | 80% | 38,261 psi | 60% | 2569 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,749 psi | 50% | 2395 fps | 96.5% |
| ReloadSwiss RS 70 | 64.4 gr | 80% | 31,488 psi | 49% | 2395 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 51,764 psi | 81% | 2612 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,353 psi | 71% | 2539 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,769 psi | 61% | 2474 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 46,050 psi | 72% | 2612 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 94% | 42,322 psi | 66% | 2602 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 82% | 39,233 psi | 61% | 2454 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,824 psi | 56% | 2388 fps | 96.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,443 psi | 76% | 2612 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,555 psi | 68% | 2526 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 36,172 psi | 57% | 2415 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,089 psi | 63% | 2530 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,501 psi | 78% | 2638 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,485 psi | 74% | 2612 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,994 psi | 77% | 2526 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,046 psi | 64% | 2402 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 34,954 psi | 55% | 2333 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 41,916 psi | 66% | 2598 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 48,617 psi | 76% | 2526 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,356 psi | 77% | 2628 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,566 psi | 62% | 2480 fps | 99.7% |
| Somchem S361 | <<locked>> | 96% | 50,444 psi | 79% | 2654 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 28,935 psi | 45% | 2339 fps | 98.9% |
| Somchem S385 | <<locked>> | 90% | 37,666 psi | 59% | 2484 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 49,516 psi | 78% | 2513 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,397 psi | 71% | 2510 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,774 psi | 72% | 2523 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,594 psi | 59% | 2415 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 33,721 psi | 53% | 2382 fps | 97.3% |
| Vihtavuori N165 | <<locked>> | 96% | 39,639 psi | 62% | 2510 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 51,242 psi | 80% | 2631 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,135 psi | 69% | 2520 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,141 psi | 52% | 2382 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 82% | 26,469 psi | 41% | 2277 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,214 psi | 52% | 2359 fps | 99% |
| Winchester 748 | <<locked>> | 80% | 51,547 psi | 81% | 2680 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 36,854 psi | 58% | 2484 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 86% | 24,468 psi | 38% | 2274 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,195 psi | 74% | 2618 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 42,757 psi | 67% | 2572 fps | 95.5% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 107 powders for .340 Weath. Mag. loaded with the .338 | 230gr | Lehigh Defense Match Solid. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,864 fps; across all powders the maximum-charge window runs from 1,660 fps to 2,864 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 230.0 gr projectile in 0.338" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. ReloadSwiss RS 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .340 Weath. Mag. with the .338 | 230gr | Lehigh Defense Match Solid they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.