Load Specifications
Bullet Manufacturer:Nosler
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:1:12.0
Load data in caliber .340 Weath. Mag. with .338 | 225gr | Nosler Expansion Tip 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, Hodgdon Superformance and Alliant Reloder-17.
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% | 55,782 psi | 87% | 2648 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,578 psi | 86% | 2674 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,478 psi | 89% | 2743 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,348 psi | 90% | 2749 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,542 psi | 71% | 2664 fps | 98.6% |
| Accurate 4064 | <<locked>> | 88% | 54,882 psi | 86% | 2726 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,477 psi | 87% | 2831 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 54,998 psi | 86% | 2759 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,289 psi | 88% | 2766 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,417 psi | 84% | 2818 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,435 psi | 90% | 2756 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,405 psi | 87% | 2677 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,100 psi | 86% | 2887 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,579 psi | 89% | 2785 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,029 psi | 89% | 2812 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,405 psi | 88% | 2884 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,230 psi | 85% | 2864 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,359 psi | 82% | 2805 fps | 97.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 45,818 psi | 72% | 2743 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,279 psi | 68% | 2694 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,884 psi | 59% | 2602 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,849 psi | 77% | 2867 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,984 psi | 86% | 2782 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 57,116 psi | 90% | 2802 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 45,818 psi | 72% | 2743 fps | 96.5% |
| Bofors RP7 | <<locked>> | 94% | 56,898 psi | 89% | 2785 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,347 psi | 87% | 2687 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,174 psi | 90% | 2789 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,244 psi | 85% | 2769 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 94% | 54,433 psi | 85% | 2831 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 92% | 54,926 psi | 86% | 2792 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 84% | 55,637 psi | 87% | 2769 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,463 psi | 88% | 2805 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,637 psi | 87% | 2808 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,737 psi | 86% | 2871 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,853 psi | 56% | 1680 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,811 psi | 89% | 2772 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,144 psi | 88% | 2746 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,695 psi | 87% | 2749 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,347 psi | 87% | 2736 fps | 99.1% |
| IMR 4350 | <<locked>> | 98% | 57,667 psi | 90% | 2815 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,463 psi | 87% | 2766 fps | 99.1% |
| IMR 4831 | <<locked>> | 98% | 55,869 psi | 88% | 2822 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 54,752 psi | 86% | 2785 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 53,200 psi | 83% | 2749 fps | 96% |
| IMR 8208 XBR | <<locked>> | 84% | 57,435 psi | 90% | 2756 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,085 psi | 86% | 2736 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,389 psi | 85% | 2690 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,448 psi | 87% | 2740 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,911 psi | 86% | 2756 fps | 99.7% |
| Lovex S070 | <<locked>> | 96% | 56,014 psi | 88% | 2795 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 37,710 psi | 59% | 2520 fps | 96.9% |
| Norma 201 | <<locked>> | 86% | 57,072 psi | 89% | 2753 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,447 psi | 85% | 2703 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,275 psi | 88% | 2795 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,868 psi | 86% | 2818 fps | 97.9% |
| Norma MRPᴾ | <<locked>> | 100% | 48,443 psi | 76% | 2822 fps | 98.4% |
| Norma URP | <<locked>> | 96% | 54,447 psi | 85% | 2818 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 56,956 psi | 89% | 2822 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 56,768 psi | 89% | 2871 fps | 99.8% |
| Ramshot TAC | <<locked>> | 84% | 57,638 psi | 90% | 2789 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 84% | 57,624 psi | 90% | 2802 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,390 psi | 57% | 1719 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,592 psi | 86% | 2756 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,143 psi | 85% | 2825 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,911 psi | 84% | 2858 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,332 psi | 87% | 2854 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,259 psi | 85% | 2884 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 54,505 psi | 85% | 2680 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,259 psi | 85% | 2703 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,217 psi | 90% | 2795 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,143 psi | 86% | 2785 fps | 97% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,184 psi | 80% | 2785 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 94% | 56,898 psi | 89% | 2785 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,911 psi | 86% | 2756 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,085 psi | 86% | 2736 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,448 psi | 87% | 2740 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,014 psi | 88% | 2795 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,303 psi | 87% | 2808 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,333 psi | 88% | 2769 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,130 psi | 90% | 2785 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,969 psi | 86% | 2638 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,680 psi | 87% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,984 psi | 86% | 2713 fps | 99.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,705 psi | 79% | 2782 fps | 97.5% |
| Somchem S335 | <<locked>> | 84% | 54,404 psi | 85% | 2638 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,014 psi | 88% | 2756 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,261 psi | 90% | 2792 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 57,290 psi | 90% | 2785 fps | 96.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 56,550 psi | 89% | 2864 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,837 psi | 81% | 2766 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 84% | 55,390 psi | 87% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,404 psi | 85% | 2664 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,926 psi | 86% | 2680 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,303 psi | 87% | 2720 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 56,942 psi | 89% | 2812 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 44,686 psi | 70% | 2631 fps | 96.6% |
| Vihtavuori N530 | <<locked>> | 82% | 54,418 psi | 85% | 2710 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,565 psi | 89% | 2726 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,840 psi | 88% | 2818 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,993 psi | 75% | 2762 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,768 psi | 89% | 2782 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,636 psi | 86% | 2756 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,665 psi | 86% | 2835 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,638 psi | 61% | 2726 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,174 psi | 90% | 2795 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 48,834 psi | 77% | 2703 fps | 96.8% |
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% | 52,330 psi | 82% | 2602 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,730 psi | 70% | 2536 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,736 psi | 83% | 2694 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,874 psi | 69% | 2533 fps | 96.5% |
| Accurate 3100 | <<locked>> | 92% | 34,403 psi | 54% | 2448 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 42,351 psi | 66% | 2539 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,560 psi | 49% | 2395 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 80% | 48,559 psi | 76% | 2664 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,220 psi | 65% | 2523 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 94% | 43,990 psi | 69% | 2651 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,691 psi | 79% | 2661 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,793 psi | 81% | 2631 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,715 psi | 70% | 2717 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,118 psi | 64% | 2543 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,092 psi | 69% | 2608 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,821 psi | 50% | 2411 fps | 96.8% |
| Alliant Reloder-17 | 64 gr | 80% | 35,679 psi | 56% | 2533 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 43,120 psi | 68% | 2641 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 42,917 psi | 67% | 2687 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 84% | 25,860 psi | 41% | 2270 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 96% | 33,431 psi | 52% | 2490 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 88% | 31,647 psi | 50% | 2497 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,964 psi | 75% | 2674 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 40,770 psi | 64% | 2546 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 42,917 psi | 67% | 2687 fps | 95.7% |
| Bofors RP7 | <<locked>> | 82% | 38,885 psi | 61% | 2474 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,054 psi | 82% | 2641 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,024 psi | 78% | 2690 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,553 psi | 65% | 2556 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 82% | 36,260 psi | 57% | 2500 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 84% | 42,308 psi | 66% | 2575 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 49,037 psi | 77% | 2671 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,211 psi | 46% | 2313 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,324 psi | 71% | 2654 fps | 100% |
| Hodgdon Superformance | 71 gr | 84% | 38,159 psi | 60% | 2566 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,571 psi | 42% | 1499 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,036 psi | 74% | 2628 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 49,139 psi | 77% | 2651 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,308 psi | 68% | 2552 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,730 psi | 72% | 2579 fps | 97.7% |
| IMR 4350 | <<locked>> | 86% | 39,421 psi | 62% | 2507 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,014 psi | 60% | 2454 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 30,719 psi | 48% | 2356 fps | 96.3% |
| IMR 4895 | <<locked>> | 80% | 45,223 psi | 71% | 2635 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 98% | 49,951 psi | 78% | 2697 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 50,691 psi | 79% | 2661 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,964 psi | 75% | 2635 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,066 psi | 75% | 2595 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 43,207 psi | 68% | 2549 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,346 psi | 55% | 2405 fps | 96.4% |
| Lovex S070 | <<locked>> | 82% | 35,810 psi | 56% | 2434 fps | 95.3% |
| Lovex S071 | <<locked>> | 96% | 33,011 psi | 52% | 2418 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 47,195 psi | 74% | 2608 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,935 psi | 75% | 2612 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,468 psi | 68% | 2595 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 44,527 psi | 70% | 2648 fps | 95.7% |
| Norma MRP | <<locked>> | 92% | 36,869 psi | 58% | 2589 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 31,908 psi | 50% | 2398 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 80% | 43,424 psi | 68% | 2615 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 33,214 psi | 52% | 2434 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 50,444 psi | 79% | 2680 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,285 psi | 79% | 2697 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,977 psi | 42% | 1535 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,843 psi | 66% | 2543 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,181 psi | 74% | 2717 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,000 psi | 60% | 2592 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,328 psi | 49% | 2411 fps | 96.1% |
| ReloadSwiss RS 70 | 65 gr | 80% | 31,270 psi | 49% | 2415 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 51,184 psi | 80% | 2635 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,020 psi | 71% | 2562 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,392 psi | 60% | 2497 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 48,486 psi | 76% | 2680 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 94% | 41,872 psi | 66% | 2625 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 82% | 38,885 psi | 61% | 2474 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,346 psi | 55% | 2405 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,964 psi | 75% | 2635 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,207 psi | 68% | 2549 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 35,810 psi | 56% | 2434 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,653 psi | 62% | 2549 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,979 psi | 77% | 2657 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,065 psi | 74% | 2635 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,675 psi | 76% | 2552 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,727 psi | 64% | 2428 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 36,970 psi | 58% | 2402 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 41,481 psi | 65% | 2618 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 48,066 psi | 75% | 2549 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,805 psi | 76% | 2651 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,030 psi | 61% | 2497 fps | 99.6% |
| Somchem S361 | <<locked>> | 98% | 53,577 psi | 84% | 2730 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 28,471 psi | 45% | 2352 fps | 98.6% |
| Somchem S385 | <<locked>> | 92% | 39,813 psi | 62% | 2552 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 49,182 psi | 77% | 2539 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,034 psi | 71% | 2536 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,368 psi | 71% | 2546 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,246 psi | 58% | 2434 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 33,344 psi | 52% | 2398 fps | 97% |
| Vihtavuori N165 | <<locked>> | 96% | 39,189 psi | 61% | 2530 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 50,778 psi | 80% | 2657 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,729 psi | 69% | 2543 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,779 psi | 51% | 2402 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 84% | 27,978 psi | 44% | 2343 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,851 psi | 51% | 2375 fps | 98.8% |
| Winchester 748 | <<locked>> | 80% | 51,010 psi | 80% | 2703 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 36,434 psi | 57% | 2500 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 88% | 25,933 psi | 41% | 2352 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,702 psi | 73% | 2641 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 42,293 psi | 66% | 2592 fps | 95.1% |
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 120 powders for .340 Weath. Mag. loaded with the .338 | 225gr | Nosler Expansion Tip. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,887 fps; across all powders the maximum-charge window runs from 1,680 fps to 2,887 fps. Accurate 3100 gives the best case fill at 100 %, and 120 of the 120 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 225.0 gr projectile in 0.338" calls for a 1:12.0 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .340 Weath. Mag. with the .338 | 225gr | Nosler Expansion Tip they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Hodgdon H1000 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.