Load Specifications
Load data in caliber 7 mm WSM with .284 | 160gr | Barnes X S bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Alliant Reloder-26 and Accurate MAGPRO.
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.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 57,551 psi | 90% | 2851 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,521 psi | 87% | 2835 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 55,317 psi | 87% | 2936 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 82% | 56,086 psi | 88% | 2785 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,245 psi | 87% | 2874 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 96% | 56,478 psi | 89% | 2930 fps | 98.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,674 psi | 75% | 2769 fps | 96.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,830 psi | 67% | 2743 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,667 psi | 90% | 2812 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 55,288 psi | 87% | 2881 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 56,637 psi | 89% | 2897 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,911 psi | 86% | 2864 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 56,507 psi | 89% | 2933 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 57,421 psi | 90% | 2904 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,214 psi | 83% | 2913 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,070 psi | 85% | 2946 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 55,434 psi | 87% | 2913 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,356 psi | 77% | 2851 fps | 97.9% |
| Bofors RP5 | <<locked>> | 96% | 56,507 psi | 89% | 2933 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 57,479 psi | 90% | 2825 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,402 psi | 82% | 2858 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 86% | 56,376 psi | 88% | 2877 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 55,666 psi | 87% | 2831 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 94% | 56,666 psi | 89% | 2874 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 55,550 psi | 87% | 2858 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,028 psi | 88% | 2805 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,214 psi | 82% | 2969 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 86% | 56,623 psi | 89% | 2913 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,318 psi | 58% | 1762 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,361 psi | 87% | 2808 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,245 psi | 87% | 2792 fps | 99.7% |
| IMR 4831 | <<locked>> | 88% | 55,463 psi | 87% | 2822 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,491 psi | 85% | 2805 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 96% | 54,389 psi | 85% | 2910 fps | 98.2% |
| Lovex S065 | <<locked>> | 86% | 56,420 psi | 88% | 2799 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,636 psi | 86% | 2795 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,129 psi | 86% | 2815 fps | 100% |
| Norma 204 | <<locked>> | 88% | 56,173 psi | 88% | 2864 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 38,682 psi | 61% | 2677 fps | 97% |
| Norma MRP | <<locked>> | 94% | 56,362 psi | 88% | 2959 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 57,014 psi | 89% | 2864 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,911 psi | 86% | 2930 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 88% | 55,651 psi | 87% | 2867 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,942 psi | 89% | 2923 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,130 psi | 60% | 1804 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,927 psi | 88% | 2884 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,056 psi | 86% | 2854 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 56,289 psi | 88% | 2930 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,605 psi | 82% | 2969 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 82% | 55,927 psi | 88% | 2782 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 56,797 psi | 89% | 2844 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 92% | 54,389 psi | 85% | 2854 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 86% | 57,479 psi | 90% | 2825 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,420 psi | 88% | 2799 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,636 psi | 86% | 2795 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,550 psi | 89% | 2835 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,434 psi | 87% | 2654 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,608 psi | 87% | 2749 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 57,392 psi | 90% | 2904 fps | 99.4% |
| Somchem S355 | <<locked>> | 82% | 55,419 psi | 87% | 2776 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,723 psi | 86% | 2782 fps | 97.5% |
| Somchem S365 | <<locked>> | 90% | 57,203 psi | 90% | 2867 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,434 psi | 87% | 2835 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 84% | 56,405 psi | 88% | 2746 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,288 psi | 87% | 2802 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,433 psi | 85% | 2808 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 86% | 54,578 psi | 86% | 2812 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 56,942 psi | 89% | 2887 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 56,159 psi | 88% | 2949 fps | 98.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,115 psi | 88% | 2930 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,447 psi | 85% | 2766 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 56,652 psi | 89% | 2881 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,317 psi | 85% | 2989 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,795 psi | 86% | 2825 fps | 99% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 35,070 psi | 55% | 2448 fps | 97.1% |
| Accurate 4350 | <<locked>> | 80% | 45,948 psi | 72% | 2680 fps | 99.9% |
| Accurate MAGPRO | 62.4 gr | 90% | 48,399 psi | 76% | 2818 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 52,837 psi | 83% | 2736 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,043 psi | 60% | 2546 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 88% | 43,816 psi | 69% | 2700 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 96% | 42,119 psi | 66% | 2654 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 92% | 33,794 psi | 53% | 2516 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,288 psi | 85% | 2762 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,221 psi | 68% | 2677 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,414 psi | 77% | 2792 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,116 psi | 60% | 2546 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 84% | 38,769 psi | 61% | 2602 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,025 psi | 52% | 2464 fps | 99.4% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,240 psi | 46% | 2375 fps | 95.2% |
| Alliant Reloder-26 | 56.1 gr | 80% | 35,781 psi | 56% | 2598 fps | 98.7% |
| Bofors RP15 | <<locked>> | 86% | 38,464 psi | 60% | 2595 fps | 95.4% |
| Bofors RP30 | <<locked>> | 94% | 40,944 psi | 64% | 2684 fps | 95.6% |
| Bofors RP5 | <<locked>> | 84% | 38,769 psi | 61% | 2602 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 48,283 psi | 76% | 2671 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 92% | 40,567 psi | 64% | 2628 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 46,731 psi | 73% | 2713 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 80% | 49,110 psi | 77% | 2723 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 88% | 46,717 psi | 73% | 2703 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 88% | 45,818 psi | 72% | 2687 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,234 psi | 65% | 2569 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 36,143 psi | 57% | 2612 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 45,832 psi | 72% | 2736 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,065 psi | 44% | 1575 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,598 psi | 68% | 2605 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,124 psi | 77% | 2690 fps | 99.1% |
| IMR 4831 | <<locked>> | 80% | 43,410 psi | 68% | 2621 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 86% | 45,556 psi | 71% | 2648 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 88% | 42,163 psi | 66% | 2677 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 47,282 psi | 74% | 2651 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 45,745 psi | 72% | 2641 fps | 98.9% |
| Lovex S071 | <<locked>> | 80% | 30,574 psi | 48% | 2333 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 43,468 psi | 68% | 2641 fps | 96.7% |
| Norma 217 | <<locked>> | 96% | 34,490 psi | 54% | 2569 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 35,549 psi | 56% | 2556 fps | 96.1% |
| Norma URP | <<locked>> | 80% | 44,585 psi | 70% | 2661 fps | 99.9% |
| Ramshot Grand | <<locked>> | 88% | 42,032 psi | 66% | 2687 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 43,337 psi | 68% | 2657 fps | 99% |
| Ramshot Magnum | <<locked>> | 86% | 35,462 psi | 56% | 2520 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,660 psi | 45% | 1611 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,199 psi | 82% | 2831 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,382 psi | 71% | 2697 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,236 psi | 68% | 2707 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 35,476 psi | 56% | 2595 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 52,591 psi | 82% | 2736 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 41,872 psi | 66% | 2579 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 80% | 37,565 psi | 59% | 2533 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 48,283 psi | 76% | 2671 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,282 psi | 74% | 2651 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 45,745 psi | 72% | 2641 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,243 psi | 83% | 2785 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,127 psi | 82% | 2608 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,398 psi | 73% | 2598 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,217 psi | 58% | 2526 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 52,170 psi | 82% | 2726 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 45,542 psi | 71% | 2625 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 41,597 psi | 65% | 2625 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,247 psi | 60% | 2520 fps | 96.5% |
| Vihtavuori N150 | <<locked>> | 80% | 49,951 psi | 78% | 2654 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,977 psi | 72% | 2654 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 82% | 35,404 psi | 55% | 2451 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 45,455 psi | 71% | 2661 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 37,289 psi | 58% | 2546 fps | 99.4% |
| Vihtavuori N560 | 58.5 gr | 86% | 43,279 psi | 68% | 2713 fps | 95% |
| Vihtavuori N565 | <<locked>> | 92% | 43,439 psi | 68% | 2703 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,541 psi | 70% | 2612 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,992 psi | 74% | 2720 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 80% | 29,791 psi | 47% | 2490 fps | 99.6% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,144 psi | 58% | 2497 fps | 95% |
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 82 powders for 7 mm WSM loaded with the .284 | 160gr | Barnes X S. Winchester StaBALL HD delivers the highest muzzle velocity at 2,989 fps; across all powders the maximum-charge window runs from 1,762 fps to 2,989 fps. ADI AR 2217 gives the best case fill at 100 %, and 82 of the 82 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Vihtavuori N560, Alliant Reloder-26, Accurate MAGPRO rank at the top here: for 7 mm WSM with the .284 | 160gr | Barnes X S they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, IMR 8133 Enduron 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.