Load Specifications
Bullet Manufacturer:Rhino Bullets
Bullet Weight:210 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:1:15.0
Load data in caliber .340 Weath. Mag. with .338 | 210gr | Rhino Penetrator bullet and 108 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>> | 86% | 57,711 psi | 90% | 2822 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,593 psi | 87% | 2835 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,486 psi | 76% | 2815 fps | 98.9% |
| Accurate 4064 | <<locked>> | 86% | 54,346 psi | 85% | 2828 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,375 psi | 85% | 2923 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 52,707 psi | 83% | 3005 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 84% | 57,014 psi | 89% | 2904 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,752 psi | 86% | 2858 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,695 psi | 87% | 2966 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,854 psi | 88% | 2851 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 57,493 psi | 90% | 2815 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 57,479 psi | 90% | 3038 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,666 psi | 87% | 2963 fps | 98% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,666 psi | 87% | 2963 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,158 psi | 86% | 2881 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,666 psi | 87% | 2904 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,201 psi | 87% | 2982 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,666 psi | 89% | 3012 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,839 psi | 86% | 2953 fps | 97.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,225 psi | 76% | 2890 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,571 psi | 71% | 2838 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,914 psi | 63% | 2746 fps | 97.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,779 psi | 81% | 3022 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 57,145 psi | 90% | 2927 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 56,057 psi | 88% | 2897 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,225 psi | 76% | 2890 fps | 96.8% |
| Bofors RP7 | <<locked>> | 92% | 55,651 psi | 87% | 2877 fps | 98.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,261 psi | 90% | 2828 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,709 psi | 87% | 2884 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,695 psi | 89% | 2917 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 56,826 psi | 89% | 2979 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 92% | 56,956 psi | 89% | 2936 fps | 98.4% |
| Hodgdon H4895 | <<locked>> | 84% | 57,682 psi | 90% | 2913 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,434 psi | 87% | 2904 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,128 psi | 85% | 2900 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 57,290 psi | 90% | 3018 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,042 psi | 56% | 1772 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,259 psi | 87% | 2864 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,578 psi | 86% | 2838 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 57,696 psi | 90% | 2890 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 57,232 psi | 90% | 2877 fps | 99.2% |
| IMR 4350 | <<locked>> | 96% | 56,391 psi | 88% | 2910 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 57,377 psi | 90% | 2907 fps | 99.2% |
| IMR 4831 | <<locked>> | 96% | 54,940 psi | 86% | 2920 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 57,072 psi | 89% | 2933 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 55,347 psi | 87% | 2890 fps | 96.1% |
| IMR 8208 XBR | <<locked>> | 82% | 55,854 psi | 88% | 2851 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,392 psi | 90% | 2877 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,188 psi | 88% | 2828 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,404 psi | 85% | 2835 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,276 psi | 90% | 2900 fps | 99.8% |
| Lovex S070 | <<locked>> | 94% | 54,853 psi | 86% | 2890 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,161 psi | 63% | 2661 fps | 97.2% |
| Norma 201 | <<locked>> | 84% | 55,738 psi | 87% | 2844 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,449 psi | 88% | 2844 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,897 psi | 86% | 2890 fps | 100% |
| Norma 204 | <<locked>> | 96% | 57,000 psi | 89% | 2963 fps | 98% |
| Norma MRPᴾ | <<locked>> | 100% | 51,097 psi | 80% | 2976 fps | 98.6% |
| Norma URP | <<locked>> | 96% | 56,768 psi | 89% | 2963 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 55,608 psi | 87% | 2917 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,492 psi | 87% | 2963 fps | 99.6% |
| Ramshot TAC | <<locked>> | 82% | 56,057 psi | 88% | 2881 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,970 psi | 88% | 2894 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,753 psi | 58% | 1814 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,652 psi | 89% | 2897 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,492 psi | 89% | 2972 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,289 psi | 88% | 3009 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,114 psi | 85% | 2949 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,811 psi | 89% | 3035 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 56,594 psi | 89% | 2822 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,521 psi | 89% | 2848 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,101 psi | 88% | 2894 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 57,551 psi | 90% | 2936 fps | 97.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,722 psi | 84% | 2936 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 92% | 55,651 psi | 87% | 2877 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,276 psi | 90% | 2900 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,392 psi | 90% | 2877 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,404 psi | 85% | 2835 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,853 psi | 86% | 2890 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,099 psi | 85% | 2900 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,723 psi | 86% | 2858 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,579 psi | 87% | 2877 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,869 psi | 89% | 2776 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 57,638 psi | 90% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,203 psi | 90% | 2854 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,229 psi | 83% | 2930 fps | 97.7% |
| Somchem S335 | <<locked>> | 84% | 56,376 psi | 88% | 2772 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,346 psi | 85% | 2844 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,159 psi | 88% | 2890 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 55,941 psi | 88% | 2874 fps | 96% |
| Somchem S365 | <<locked>> | 98% | 55,637 psi | 87% | 2966 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,447 psi | 85% | 2910 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 84% | 57,290 psi | 90% | 2756 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,681 psi | 89% | 2805 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 57,043 psi | 89% | 2822 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 57,580 psi | 90% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,492 psi | 87% | 2904 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,079 psi | 74% | 2776 fps | 96.8% |
| Vihtavuori N530 | <<locked>> | 82% | 56,289 psi | 88% | 2848 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,201 psi | 87% | 2818 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,650 psi | 86% | 2913 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,966 psi | 80% | 2917 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,361 psi | 87% | 2874 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,739 psi | 89% | 2897 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 57,029 psi | 89% | 2982 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,930 psi | 64% | 2877 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,651 psi | 87% | 2887 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,126 psi | 80% | 2848 fps | 97% |
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% | 47,369 psi | 74% | 2677 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,701 psi | 72% | 2671 fps | 96.7% |
| Accurate 3100 | <<locked>> | 90% | 34,461 psi | 54% | 2539 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 44,817 psi | 70% | 2684 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,678 psi | 53% | 2533 fps | 96.9% |
| Accurate High Country | <<locked>> | 96% | 45,905 psi | 72% | 2884 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 50,488 psi | 79% | 2802 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,772 psi | 67% | 2654 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 94% | 45,818 psi | 72% | 2792 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,533 psi | 82% | 2802 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 53,853 psi | 84% | 2769 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,514 psi | 73% | 2858 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 42,960 psi | 67% | 2736 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 42,960 psi | 67% | 2736 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,975 psi | 67% | 2677 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,021 psi | 72% | 2746 fps | 99.7% |
| Alliant Reloder-16 | 63.9 gr | 80% | 33,417 psi | 52% | 2546 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,463 psi | 59% | 2671 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,165 psi | 71% | 2782 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 96% | 42,308 psi | 66% | 2772 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 82% | 25,846 psi | 41% | 2349 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,112 psi | 52% | 2572 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 86% | 31,473 psi | 49% | 2579 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,038 psi | 78% | 2818 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 43,076 psi | 68% | 2690 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 42,308 psi | 66% | 2772 fps | 95.1% |
| Bofors RP7 | <<locked>> | 82% | 40,799 psi | 64% | 2608 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,925 psi | 85% | 2779 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,982 psi | 81% | 2828 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,555 psi | 68% | 2694 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 82% | 38,247 psi | 60% | 2638 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 84% | 44,164 psi | 69% | 2717 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 50,995 psi | 80% | 2812 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,806 psi | 48% | 2441 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,340 psi | 74% | 2792 fps | 100% |
| Hodgdon Superformance | 76.3 gr | 84% | 40,030 psi | 63% | 2707 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,934 psi | 42% | 1585 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,820 psi | 77% | 2766 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,372 psi | 81% | 2795 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,933 psi | 70% | 2687 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,340 psi | 74% | 2713 fps | 97.8% |
| IMR 4350 | <<locked>> | 84% | 38,725 psi | 61% | 2589 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,682 psi | 62% | 2589 fps | 95.8% |
| IMR 4831 | <<locked>> | 80% | 32,489 psi | 51% | 2487 fps | 96.6% |
| IMR 4895 | <<locked>> | 80% | 47,210 psi | 74% | 2776 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,011 psi | 82% | 2838 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 52,533 psi | 82% | 2802 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,386 psi | 79% | 2779 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,763 psi | 78% | 2730 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,165 psi | 71% | 2690 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,159 psi | 58% | 2536 fps | 96.6% |
| Lovex S070 | <<locked>> | 82% | 37,768 psi | 59% | 2569 fps | 95.6% |
| Lovex S071 | <<locked>> | 96% | 35,331 psi | 55% | 2559 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 49,255 psi | 77% | 2749 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,864 psi | 78% | 2749 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,397 psi | 71% | 2733 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 43,627 psi | 68% | 2730 fps | 95% |
| Norma MRP | <<locked>> | 92% | 38,943 psi | 61% | 2730 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 33,794 psi | 53% | 2533 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 80% | 45,223 psi | 71% | 2749 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 35,012 psi | 55% | 2572 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 52,460 psi | 82% | 2822 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,460 psi | 82% | 2841 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,325 psi | 43% | 1621 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,729 psi | 69% | 2677 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,226 psi | 77% | 2861 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,842 psi | 62% | 2730 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,286 psi | 52% | 2549 fps | 96.4% |
| ReloadSwiss RS 70 | 69.8 gr | 80% | 32,808 psi | 51% | 2549 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 53,490 psi | 84% | 2776 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,978 psi | 74% | 2700 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,553 psi | 64% | 2635 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 47,616 psi | 75% | 2772 fps | 95% |
| Rottweil R 905 | <<locked>> | 94% | 44,164 psi | 69% | 2769 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 82% | 40,799 psi | 64% | 2608 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,159 psi | 58% | 2536 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,386 psi | 79% | 2779 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,165 psi | 71% | 2690 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 37,768 psi | 59% | 2569 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,481 psi | 65% | 2687 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,082 psi | 80% | 2802 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,863 psi | 77% | 2772 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,314 psi | 79% | 2684 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,293 psi | 66% | 2556 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,943 psi | 61% | 2536 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 43,729 psi | 69% | 2762 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 49,966 psi | 78% | 2684 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,952 psi | 80% | 2792 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,973 psi | 64% | 2635 fps | 99.7% |
| Somchem S361 | <<locked>> | 96% | 52,243 psi | 82% | 2815 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 30,298 psi | 47% | 2487 fps | 98.8% |
| Somchem S385 | <<locked>> | 90% | 39,392 psi | 62% | 2638 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 50,778 psi | 80% | 2671 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,949 psi | 74% | 2671 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,355 psi | 74% | 2684 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,189 psi | 61% | 2569 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 35,143 psi | 55% | 2533 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 96% | 41,278 psi | 65% | 2664 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 52,808 psi | 83% | 2799 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,643 psi | 72% | 2677 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,635 psi | 54% | 2533 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 82% | 28,036 psi | 44% | 2428 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,592 psi | 54% | 2507 fps | 99% |
| Winchester 748 | <<locked>> | 80% | 53,084 psi | 83% | 2848 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 38,247 psi | 60% | 2638 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 86% | 25,933 psi | 41% | 2431 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,631 psi | 76% | 2779 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 44,585 psi | 70% | 2733 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 108 powders for .340 Weath. Mag. loaded with the .338 | 210gr | Rhino Penetrator. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,038 fps; across all powders the maximum-charge window runs from 1,772 fps to 3,038 fps. Accurate 3100 gives the best case fill at 100 %, and 108 of the 108 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 210.0 gr projectile in 0.338" calls for a 1:15.0 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 | 210gr | Rhino Penetrator 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.