Load Specifications
Bullet Manufacturer:Frontier Bullets
Bullet Weight:225 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:1:12.5
Load data in caliber .340 Weath. Mag. with .338 | 225gr | Frontier PH HPBT bullet and 112 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-16 and Hodgdon Superformance.
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 2495 | <<locked>> | 84% | 54,882 psi | 86% | 2680 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,478 psi | 89% | 2749 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,356 psi | 77% | 2733 fps | 99.3% |
| Accurate 4064 | <<locked>> | 86% | 55,245 psi | 87% | 2733 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,579 psi | 87% | 2838 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 53,983 psi | 85% | 2927 fps | 97.5% |
| ADI AR 2206H | <<locked>> | 82% | 54,534 psi | 85% | 2762 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,608 psi | 87% | 2769 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,681 psi | 89% | 2881 fps | 98.5% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 50,807 psi | 80% | 2815 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,724 psi | 89% | 2756 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,549 psi | 85% | 2890 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,463 psi | 88% | 2877 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,202 psi | 88% | 2789 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,666 psi | 89% | 2812 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,289 psi | 88% | 2890 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,882 psi | 84% | 2867 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,651 psi | 87% | 2867 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,269 psi | 77% | 2812 fps | 97.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,427 psi | 73% | 2753 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,683 psi | 64% | 2677 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,055 psi | 83% | 2943 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,244 psi | 85% | 2779 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 45,266 psi | 71% | 2740 fps | 96.5% |
| Bofors RP3 | <<locked>> | 88% | 57,072 psi | 89% | 2805 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,269 psi | 77% | 2812 fps | 97.6% |
| Bofors RP7 | <<locked>> | 92% | 56,608 psi | 89% | 2792 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,565 psi | 89% | 2789 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,682 psi | 90% | 2825 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 54,273 psi | 85% | 2838 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 90% | 54,389 psi | 85% | 2799 fps | 98.4% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 54,462 psi | 85% | 2818 fps | 96.3% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 53,330 psi | 84% | 2799 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 82% | 55,100 psi | 86% | 2772 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,449 psi | 88% | 2812 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,998 psi | 86% | 2805 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,259 psi | 85% | 2874 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,114 psi | 57% | 1699 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,217 psi | 88% | 2772 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,637 psi | 87% | 2746 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,230 psi | 87% | 2749 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,462 psi | 85% | 2733 fps | 99.2% |
| IMR 4350 | <<locked>> | 96% | 57,305 psi | 90% | 2822 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,897 psi | 86% | 2769 fps | 99.2% |
| IMR 4831 | <<locked>> | 96% | 56,014 psi | 88% | 2831 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 54,505 psi | 85% | 2789 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 56,260 psi | 88% | 2808 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 82% | 56,724 psi | 89% | 2756 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,781 psi | 86% | 2736 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,985 psi | 89% | 2736 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,201 psi | 87% | 2743 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,607 psi | 86% | 2762 fps | 99.8% |
| Lovex S070 | <<locked>> | 94% | 55,854 psi | 88% | 2805 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,017 psi | 64% | 2589 fps | 97.9% |
| Norma 201 | <<locked>> | 84% | 56,637 psi | 89% | 2753 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,406 psi | 90% | 2749 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,883 psi | 88% | 2799 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,302 psi | 85% | 2822 fps | 98% |
| Norma MRPᴾ | <<locked>> | 100% | 52,214 psi | 82% | 2897 fps | 99.2% |
| Norma URP | <<locked>> | 94% | 54,317 psi | 85% | 2825 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 56,536 psi | 89% | 2825 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 48,298 psi | 76% | 2792 fps | 96% |
| Ramshot Hunter | <<locked>> | 96% | 56,521 psi | 89% | 2877 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 42,873 psi | 67% | 2674 fps | 96.5% |
| Ramshot TAC | <<locked>> | 82% | 56,869 psi | 89% | 2789 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,768 psi | 89% | 2799 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,709 psi | 58% | 1739 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,479 psi | 90% | 2808 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,667 psi | 90% | 2881 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 57,276 psi | 90% | 2910 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,143 psi | 86% | 2861 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,940 psi | 85% | 2890 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 39,407 psi | 62% | 2680 fps | 96.3% |
| Rottweil R 901 | <<locked>> | 82% | 57,653 psi | 90% | 2730 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,261 psi | 90% | 2753 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 57,130 psi | 90% | 2802 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,984 psi | 86% | 2799 fps | 97.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,766 psi | 86% | 2851 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 92% | 56,608 psi | 89% | 2792 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,607 psi | 86% | 2762 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,781 psi | 86% | 2736 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,201 psi | 87% | 2743 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,854 psi | 88% | 2805 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,969 psi | 86% | 2812 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,608 psi | 87% | 2769 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,565 psi | 89% | 2789 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,375 psi | 85% | 2638 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,071 psi | 86% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,592 psi | 86% | 2720 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,273 psi | 85% | 2848 fps | 98.4% |
| Somchem S335 | <<locked>> | 84% | 57,217 psi | 90% | 2680 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,259 psi | 87% | 2753 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 57,058 psi | 89% | 2795 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 56,739 psi | 89% | 2789 fps | 96.7% |
| Somchem S365 | <<locked>> | 98% | 56,695 psi | 89% | 2871 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,564 psi | 87% | 2828 fps | 99.1% |
| Vihtavuori N133 | <<locked>> | 82% | 54,839 psi | 86% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,653 psi | 90% | 2710 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,563 psi | 86% | 2684 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,955 psi | 86% | 2726 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,623 psi | 89% | 2818 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,877 psi | 75% | 2697 fps | 97.6% |
| Vihtavuori N530 | <<locked>> | 82% | 57,203 psi | 90% | 2756 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,985 psi | 88% | 2726 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,579 psi | 87% | 2825 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,011 psi | 82% | 2828 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 52,823 psi | 83% | 2884 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,246 psi | 88% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,491 psi | 85% | 2841 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,771 psi | 65% | 2805 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,565 psi | 89% | 2792 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,054 psi | 82% | 2769 fps | 97.7% |
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 2495 | <<locked>> | 80% | 48,428 psi | 76% | 2592 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,572 psi | 73% | 2592 fps | 97.4% |
| Accurate 3100 | <<locked>> | 88% | 32,967 psi | 52% | 2418 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 45,861 psi | 72% | 2598 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,374 psi | 54% | 2461 fps | 97.7% |
| Accurate High Country | <<locked>> | 94% | 43,714 psi | 69% | 2746 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 51,169 psi | 80% | 2713 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,598 psi | 68% | 2572 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 92% | 43,758 psi | 69% | 2661 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 98% | 47,558 psi | 75% | 2756 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,243 psi | 83% | 2707 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,587 psi | 75% | 2779 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 41,017 psi | 64% | 2605 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,772 psi | 69% | 2598 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,760 psi | 73% | 2661 fps | 99.9% |
| Alliant Reloder-16 | 61.6 gr | 80% | 34,055 psi | 53% | 2477 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,159 psi | 60% | 2595 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 40,553 psi | 64% | 2598 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 94% | 40,451 psi | 63% | 2644 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 24,874 psi | 39% | 2241 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 92% | 31,734 psi | 50% | 2454 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 84% | 30,023 psi | 47% | 2454 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,763 psi | 80% | 2726 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 42,409 psi | 66% | 2684 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 43,859 psi | 69% | 2605 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 40,451 psi | 63% | 2644 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 39,015 psi | 61% | 2484 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,084 psi | 83% | 2740 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,382 psi | 70% | 2615 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 36,477 psi | 57% | 2510 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 80% | 39,508 psi | 62% | 2530 fps | 95% |
| Hodgdon H4831 | <<locked>> | 98% | 50,923 psi | 80% | 2762 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 98% | 49,879 psi | 78% | 2746 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 51,750 psi | 81% | 2723 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,531 psi | 49% | 2375 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,138 psi | 75% | 2703 fps | 100% |
| Hodgdon Superformance | 71.9 gr | 82% | 38,116 psi | 60% | 2575 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,006 psi | 42% | 1516 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,516 psi | 78% | 2674 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,257 psi | 82% | 2700 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,847 psi | 72% | 2605 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,993 psi | 75% | 2628 fps | 98.3% |
| IMR 4350 | <<locked>> | 82% | 37,028 psi | 58% | 2464 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,379 psi | 63% | 2513 fps | 96.6% |
| IMR 4831 | <<locked>> | 80% | 33,257 psi | 52% | 2421 fps | 97.5% |
| IMR 4895 | <<locked>> | 80% | 47,964 psi | 75% | 2687 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 49,763 psi | 78% | 2707 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 53,243 psi | 83% | 2707 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,329 psi | 80% | 2687 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,473 psi | 79% | 2641 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,948 psi | 72% | 2602 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,942 psi | 59% | 2467 fps | 97.4% |
| Lovex S070 | <<locked>> | 80% | 36,013 psi | 56% | 2441 fps | 95.6% |
| Lovex S071 | <<locked>> | 92% | 31,865 psi | 50% | 2392 fps | 95% |
| Norma 201 | <<locked>> | 80% | 50,256 psi | 79% | 2661 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,720 psi | 79% | 2657 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,137 psi | 72% | 2648 fps | 100% |
| Norma 204 | <<locked>> | 86% | 41,539 psi | 65% | 2595 fps | 95.1% |
| Norma MRP | <<locked>> | 90% | 37,086 psi | 58% | 2602 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 34,389 psi | 54% | 2461 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 80% | 46,253 psi | 72% | 2671 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 44,889 psi | 70% | 2730 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 33,446 psi | 52% | 2448 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 98% | 39,856 psi | 62% | 2612 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 53,287 psi | 84% | 2736 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,330 psi | 84% | 2749 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,441 psi | 43% | 1555 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,527 psi | 70% | 2598 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,270 psi | 79% | 2772 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,611 psi | 64% | 2648 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,113 psi | 53% | 2480 fps | 97.4% |
| ReloadSwiss RS 70 | 67.4 gr | 80% | 33,562 psi | 53% | 2487 fps | 96.6% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 36,825 psi | 58% | 2615 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 54,346 psi | 85% | 2684 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,848 psi | 75% | 2615 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,249 psi | 65% | 2552 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 45,411 psi | 71% | 2638 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 92% | 42,192 psi | 66% | 2635 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 39,015 psi | 61% | 2484 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,942 psi | 59% | 2467 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,329 psi | 80% | 2687 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,948 psi | 72% | 2602 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,013 psi | 56% | 2441 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,337 psi | 66% | 2608 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,938 psi | 81% | 2713 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,676 psi | 78% | 2687 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,140 psi | 80% | 2595 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,033 psi | 67% | 2470 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,144 psi | 58% | 2411 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 41,785 psi | 65% | 2631 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 50,908 psi | 80% | 2595 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,619 psi | 81% | 2703 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,901 psi | 66% | 2556 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 49,690 psi | 78% | 2684 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 31,009 psi | 49% | 2421 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 37,594 psi | 59% | 2513 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 51,619 psi | 81% | 2579 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,819 psi | 75% | 2579 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,008 psi | 75% | 2592 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,769 psi | 62% | 2487 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 35,795 psi | 56% | 2457 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 94% | 39,407 psi | 62% | 2539 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 53,621 psi | 84% | 2707 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,383 psi | 73% | 2589 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,317 psi | 55% | 2464 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 26,876 psi | 42% | 2310 fps | 95.5% |
| Vihtavuori N560 | <<locked>> | 98% | 49,255 psi | 77% | 2822 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,099 psi | 55% | 2431 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 36,477 psi | 57% | 2510 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 24,860 psi | 39% | 2316 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,603 psi | 78% | 2694 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 42,380 psi | 66% | 2602 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 112 powders for .340 Weath. Mag. loaded with the .338 | 225gr | Frontier PH HPBT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,943 fps; across all powders the maximum-charge window runs from 1,699 fps to 2,943 fps. Accurate 3100 gives the best case fill at 100 %, and 112 of the 112 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, 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-16, Hodgdon Superformance rank at the top here: for .340 Weath. Mag. with the .338 | 225gr | Frontier PH HPBT 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.