Load Specifications
Bullet Manufacturer:Lehigh Defense
Bullet Weight:245 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:1:10.0
Load data in caliber .340 Weath. Mag. with .338 | 245gr | Lehigh Defense Match Solid bullet and 113 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% | 56,347 psi | 88% | 2520 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,303 psi | 87% | 2549 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,188 psi | 90% | 2615 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,331 psi | 85% | 2579 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,311 psi | 73% | 2556 fps | 99.1% |
| Accurate 4064 | <<locked>> | 88% | 55,535 psi | 87% | 2598 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,217 psi | 88% | 2707 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 55,622 psi | 87% | 2635 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 57,000 psi | 89% | 2641 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,157 psi | 85% | 2700 fps | 98.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 48,196 psi | 76% | 2631 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,636 psi | 86% | 2585 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,159 psi | 88% | 2549 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,854 psi | 88% | 2759 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,217 psi | 90% | 2657 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,638 psi | 90% | 2684 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,261 psi | 90% | 2759 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,752 psi | 86% | 2736 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,113 psi | 83% | 2690 fps | 98.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,427 psi | 73% | 2631 fps | 97.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,816 psi | 69% | 2579 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,406 psi | 60% | 2503 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,661 psi | 78% | 2753 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,564 psi | 87% | 2657 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 42,728 psi | 67% | 2562 fps | 96.2% |
| Bofors RP3 | <<locked>> | 88% | 54,215 psi | 85% | 2628 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,427 psi | 73% | 2631 fps | 97.3% |
| Bofors RP7 | <<locked>> | 94% | 57,653 psi | 90% | 2664 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,057 psi | 88% | 2562 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,983 psi | 85% | 2615 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,042 psi | 86% | 2648 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 55,158 psi | 86% | 2710 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 92% | 55,506 psi | 87% | 2674 fps | 98.8% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 51,808 psi | 81% | 2638 fps | 96.1% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 50,618 psi | 79% | 2621 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 84% | 56,260 psi | 88% | 2644 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,290 psi | 90% | 2680 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,188 psi | 88% | 2680 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,448 psi | 87% | 2749 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,940 psi | 56% | 1588 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,638 psi | 90% | 2648 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,884 psi | 89% | 2615 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,478 psi | 89% | 2625 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,970 psi | 88% | 2615 fps | 99.5% |
| IMR 4350 | <<locked>> | 96% | 54,737 psi | 86% | 2644 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,028 psi | 88% | 2644 fps | 99.5% |
| IMR 4831 | <<locked>> | 98% | 56,724 psi | 89% | 2697 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,593 psi | 87% | 2661 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 53,838 psi | 84% | 2635 fps | 96.7% |
| IMR 8208 XBR | <<locked>> | 82% | 54,636 psi | 86% | 2585 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,796 psi | 87% | 2608 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,969 psi | 86% | 2566 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,217 psi | 88% | 2615 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,622 psi | 87% | 2638 fps | 99.9% |
| Lovex S070 | <<locked>> | 96% | 56,550 psi | 89% | 2674 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,174 psi | 60% | 2415 fps | 97.6% |
| Norma 201 | <<locked>> | 86% | 57,725 psi | 90% | 2625 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,955 psi | 86% | 2575 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,826 psi | 89% | 2671 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,303 psi | 87% | 2697 fps | 98.4% |
| Norma MRPᴾ | <<locked>> | 100% | 49,168 psi | 77% | 2710 fps | 99% |
| Norma URP | <<locked>> | 96% | 55,027 psi | 86% | 2694 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 53,954 psi | 85% | 2648 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,479 psi | 90% | 2746 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 40,379 psi | 63% | 2497 fps | 96.1% |
| Ramshot TAC | <<locked>> | 82% | 54,607 psi | 86% | 2615 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,462 psi | 85% | 2625 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,550 psi | 57% | 1627 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,230 psi | 87% | 2635 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,926 psi | 86% | 2700 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,462 psi | 85% | 2730 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,028 psi | 88% | 2733 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,042 psi | 86% | 2762 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 55,013 psi | 86% | 2552 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,013 psi | 86% | 2582 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,346 psi | 85% | 2625 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,782 psi | 87% | 2667 fps | 97.6% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,953 psi | 81% | 2671 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 94% | 57,653 psi | 90% | 2664 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,622 psi | 87% | 2638 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,796 psi | 87% | 2608 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,217 psi | 88% | 2615 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,550 psi | 89% | 2674 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,173 psi | 88% | 2684 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,855 psi | 89% | 2644 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,157 psi | 85% | 2612 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,564 psi | 87% | 2513 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,159 psi | 88% | 2516 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,637 psi | 87% | 2595 fps | 99.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,474 psi | 81% | 2667 fps | 98.2% |
| Somchem S335 | <<locked>> | 84% | 55,027 psi | 86% | 2513 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,608 psi | 89% | 2628 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,331 psi | 85% | 2618 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 53,998 psi | 85% | 2615 fps | 96.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,464 psi | 90% | 2740 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,504 psi | 82% | 2648 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 84% | 56,014 psi | 88% | 2497 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,085 psi | 86% | 2539 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,637 psi | 87% | 2556 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,912 psi | 88% | 2595 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,624 psi | 90% | 2687 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,368 psi | 71% | 2526 fps | 97.4% |
| Vihtavuori N530 | <<locked>> | 82% | 54,911 psi | 86% | 2582 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,261 psi | 90% | 2602 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,478 psi | 89% | 2697 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,907 psi | 77% | 2651 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 49,922 psi | 78% | 2697 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,377 psi | 90% | 2661 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,477 psi | 87% | 2631 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,405 psi | 87% | 2713 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,146 psi | 61% | 2618 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,740 psi | 90% | 2664 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,342 psi | 77% | 2592 fps | 97.5% |
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% | 2477 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,484 psi | 71% | 2421 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,447 psi | 84% | 2572 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,585 psi | 70% | 2428 fps | 97.3% |
| Accurate 3100 | <<locked>> | 88% | 30,429 psi | 48% | 2251 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 43,076 psi | 68% | 2428 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,155 psi | 50% | 2300 fps | 97.5% |
| ADI AR 2206H | <<locked>> | 80% | 49,197 psi | 77% | 2543 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,800 psi | 66% | 2411 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 41,597 psi | 65% | 2487 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 98% | 45,208 psi | 71% | 2579 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,372 psi | 81% | 2539 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,591 psi | 82% | 2507 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,223 psi | 71% | 2598 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,669 psi | 65% | 2431 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,744 psi | 70% | 2493 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,213 psi | 50% | 2313 fps | 97.7% |
| Alliant Reloder-17 | 60.5 gr | 80% | 36,172 psi | 57% | 2428 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 41,046 psi | 64% | 2484 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 40,669 psi | 64% | 2523 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 82% | 24,671 psi | 39% | 2136 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 31,792 psi | 50% | 2343 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 84% | 27,949 psi | 44% | 2287 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,559 psi | 76% | 2556 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 40,103 psi | 63% | 2510 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 41,481 psi | 65% | 2438 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 40,669 psi | 64% | 2523 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 37,057 psi | 58% | 2320 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,779 psi | 83% | 2520 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,517 psi | 79% | 2566 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,163 psi | 66% | 2448 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 34,505 psi | 54% | 2346 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 82% | 40,161 psi | 63% | 2418 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 98% | 48,559 psi | 76% | 2589 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 98% | 47,442 psi | 74% | 2569 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 49,748 psi | 78% | 2552 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,689 psi | 47% | 2218 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,890 psi | 72% | 2533 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 35,969 psi | 56% | 2405 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,701 psi | 42% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,645 psi | 75% | 2507 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 49,893 psi | 78% | 2530 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,947 psi | 69% | 2441 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,195 psi | 72% | 2464 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 37,449 psi | 59% | 2352 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,638 psi | 61% | 2352 fps | 96.5% |
| IMR 4831 | <<locked>> | 80% | 31,241 psi | 49% | 2260 fps | 97.2% |
| IMR 4895 | <<locked>> | 80% | 45,890 psi | 72% | 2520 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 47,413 psi | 74% | 2536 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 51,372 psi | 81% | 2539 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,689 psi | 76% | 2516 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,675 psi | 76% | 2477 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 43,830 psi | 69% | 2438 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,940 psi | 56% | 2303 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 34,069 psi | 53% | 2283 fps | 95.4% |
| Lovex S071 | <<locked>> | 94% | 31,473 psi | 49% | 2274 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 47,892 psi | 75% | 2490 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,486 psi | 76% | 2490 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,092 psi | 69% | 2480 fps | 100% |
| Norma 204 | <<locked>> | 88% | 42,206 psi | 66% | 2484 fps | 95.7% |
| Norma MRP | <<locked>> | 90% | 34,896 psi | 55% | 2431 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 32,416 psi | 51% | 2300 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 80% | 43,932 psi | 69% | 2500 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 31,502 psi | 49% | 2283 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 98% | 37,420 psi | 59% | 2438 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 51,227 psi | 80% | 2566 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,010 psi | 80% | 2575 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,137 psi | 43% | 1450 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,511 psi | 67% | 2434 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,732 psi | 75% | 2595 fps | 100% |
| ReloadSwiss RS 60 | 60.5 gr | 80% | 38,566 psi | 60% | 2480 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,865 psi | 50% | 2313 fps | 97.1% |
| ReloadSwiss RS 70 | 61.4 gr | 80% | 31,618 psi | 50% | 2320 fps | 96.2% |
| Rottweil R 901 | <<locked>> | 80% | 51,938 psi | 81% | 2513 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,629 psi | 72% | 2448 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,943 psi | 61% | 2385 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 46,151 psi | 72% | 2523 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 92% | 39,798 psi | 62% | 2464 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 37,057 psi | 58% | 2320 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,940 psi | 56% | 2303 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,689 psi | 76% | 2516 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,830 psi | 69% | 2438 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 34,069 psi | 53% | 2283 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,132 psi | 63% | 2438 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,734 psi | 78% | 2543 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,514 psi | 74% | 2516 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,110 psi | 77% | 2431 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,147 psi | 64% | 2313 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 35,128 psi | 55% | 2251 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 39,421 psi | 62% | 2461 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 48,747 psi | 76% | 2431 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,385 psi | 77% | 2533 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,668 psi | 62% | 2392 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 47,369 psi | 74% | 2513 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 28,950 psi | 45% | 2257 fps | 99.2% |
| Somchem S385 | <<locked>> | 90% | 37,811 psi | 59% | 2398 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 49,632 psi | 78% | 2418 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,527 psi | 71% | 2415 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,948 psi | 72% | 2431 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,768 psi | 59% | 2326 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 33,939 psi | 53% | 2303 fps | 97.8% |
| Vihtavuori N165 | <<locked>> | 94% | 37,101 psi | 58% | 2372 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 51,532 psi | 81% | 2539 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,266 psi | 69% | 2428 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,272 psi | 52% | 2300 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 80% | 24,816 psi | 39% | 2149 fps | 95% |
| Vihtavuori N560 | <<locked>> | 98% | 46,644 psi | 73% | 2641 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,272 psi | 52% | 2277 fps | 99.3% |
| Winchester 748 | <<locked>> | 80% | 51,648 psi | 81% | 2582 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 34,505 psi | 54% | 2346 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 23,061 psi | 36% | 2149 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,326 psi | 74% | 2523 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 40,089 psi | 63% | 2434 fps | 95.2% |
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 123 powders for .340 Weath. Mag. loaded with the .338 | 245gr | Lehigh Defense Match Solid. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,762 fps; across all powders the maximum-charge window runs from 1,588 fps to 2,762 fps. Accurate 3100 gives the best case fill at 100 %, and 123 of the 123 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. The 245.0 gr projectile in 0.338" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2209 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 | 245gr | Lehigh Defense Match Solid they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2225, Baschieri & Pellagri 109, Bofors RP30 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.