Load Specifications
Load data in caliber 7 mm WSM with .285 | 173gr | Prvi Partizan FMJ BT bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 and Norma MRP.
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>> | 94% | 55,027 psi | 86% | 2736 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,362 psi | 88% | 2766 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 57,188 psi | 90% | 2887 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 82% | 57,276 psi | 90% | 2720 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,072 psi | 89% | 2825 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 94% | 54,882 psi | 86% | 2831 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,153 psi | 77% | 2733 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,830 psi | 69% | 2700 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 57,188 psi | 90% | 2818 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,232 psi | 90% | 2818 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,563 psi | 86% | 2779 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,507 psi | 89% | 2812 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,897 psi | 86% | 2828 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,956 psi | 88% | 2795 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,085 psi | 86% | 2854 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,507 psi | 89% | 2887 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,492 psi | 89% | 2792 fps | 96.9% |
| Bofors RP15 | <<locked>> | 98% | 57,348 psi | 90% | 2864 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,227 psi | 80% | 2802 fps | 99% |
| Bofors RP5 | <<locked>> | 94% | 54,897 psi | 86% | 2828 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 55,100 psi | 86% | 2713 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,969 psi | 85% | 2815 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 54,288 psi | 85% | 2762 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 57,087 psi | 89% | 2779 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 54,723 psi | 86% | 2769 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,464 psi | 90% | 2808 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,450 psi | 90% | 2740 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,215 psi | 85% | 2930 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 54,607 psi | 86% | 2802 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,202 psi | 58% | 1709 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,623 psi | 89% | 2753 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,608 psi | 89% | 2736 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 56,753 psi | 89% | 2759 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,840 psi | 88% | 2753 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 96% | 56,405 psi | 88% | 2864 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 39,233 psi | 61% | 2598 fps | 96% |
| Lovex S065 | <<locked>> | 86% | 57,363 psi | 90% | 2736 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,477 psi | 87% | 2733 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,869 psi | 88% | 2749 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,056 psi | 85% | 2756 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 39,421 psi | 62% | 2628 fps | 98.3% |
| Norma MRP | <<locked>> | 92% | 54,534 psi | 85% | 2844 fps | 100% |
| Norma URP | <<locked>> | 86% | 54,868 psi | 86% | 2749 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 57,029 psi | 89% | 2884 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 88% | 57,305 psi | 90% | 2808 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,390 psi | 87% | 2822 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,956 psi | 59% | 1749 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,463 psi | 88% | 2792 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,665 psi | 86% | 2818 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,766 psi | 86% | 2927 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,632 psi | 78% | 2815 fps | 97.5% |
| Rottweil R 903 | <<locked>> | 82% | 56,449 psi | 88% | 2710 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,621 psi | 86% | 2740 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 92% | 56,217 psi | 88% | 2805 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 55,100 psi | 86% | 2713 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,363 psi | 90% | 2736 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,477 psi | 87% | 2733 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,217 psi | 88% | 2582 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,405 psi | 88% | 2690 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,767 psi | 87% | 2799 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 56,057 psi | 88% | 2703 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,115 psi | 88% | 2733 fps | 98.6% |
| Somchem S365 | <<locked>> | 88% | 55,114 psi | 86% | 2749 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,565 psi | 89% | 2776 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 57,493 psi | 90% | 2677 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,565 psi | 89% | 2740 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,057 psi | 88% | 2756 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 55,811 psi | 87% | 2749 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,679 psi | 86% | 2772 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,418 psi | 85% | 2841 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 98% | 54,085 psi | 85% | 2822 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,894 psi | 80% | 2818 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,999 psi | 88% | 2700 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,549 psi | 85% | 2769 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 57,696 psi | 90% | 2930 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,507 psi | 89% | 2772 fps | 99.7% |
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% | 34,432 psi | 54% | 2372 fps | 97.9% |
| Accurate 4350 | <<locked>> | 80% | 46,108 psi | 72% | 2612 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 43,192 psi | 68% | 2644 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 53,882 psi | 84% | 2671 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,421 psi | 60% | 2490 fps | 96.5% |
| ADI AR 2213 | <<locked>> | 84% | 39,189 psi | 61% | 2536 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 92% | 37,768 psi | 59% | 2503 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 90% | 31,705 psi | 50% | 2405 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,812 psi | 61% | 2493 fps | 96.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,135 psi | 69% | 2615 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,879 psi | 80% | 2723 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,450 psi | 60% | 2490 fps | 96.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,301 psi | 54% | 2431 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,967 psi | 52% | 2398 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,776 psi | 45% | 2313 fps | 96.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,984 psi | 56% | 2530 fps | 99.4% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,009 psi | 78% | 2680 fps | 95.3% |
| Bofors RP15 | <<locked>> | 84% | 36,506 psi | 57% | 2484 fps | 95.9% |
| Bofors RP30 | <<locked>> | 90% | 36,535 psi | 57% | 2516 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 34,301 psi | 54% | 2431 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 48,718 psi | 76% | 2612 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 35,998 psi | 56% | 2464 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 47,688 psi | 75% | 2657 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 50,256 psi | 79% | 2671 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 84% | 41,727 psi | 65% | 2543 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,089 psi | 64% | 2526 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,568 psi | 65% | 2500 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,098 psi | 53% | 2503 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 47,123 psi | 74% | 2680 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,920 psi | 44% | 1529 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,164 psi | 69% | 2549 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,922 psi | 78% | 2631 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 43,743 psi | 69% | 2556 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 40,799 psi | 64% | 2487 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 86% | 40,350 psi | 63% | 2575 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 98% | 36,796 psi | 58% | 2543 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 47,587 psi | 75% | 2585 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 45,948 psi | 72% | 2579 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 29,718 psi | 47% | 2257 fps | 96.2% |
| Norma 204 | <<locked>> | 80% | 44,063 psi | 69% | 2585 fps | 97.9% |
| Norma 217 | <<locked>> | 94% | 32,314 psi | 51% | 2451 fps | 95.6% |
| Norma MRP | 55.9 gr | 80% | 35,766 psi | 56% | 2497 fps | 97.3% |
| Norma URP | <<locked>> | 80% | 45,150 psi | 71% | 2595 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 37,173 psi | 58% | 2520 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 43,903 psi | 69% | 2595 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 33,170 psi | 52% | 2405 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,456 psi | 45% | 1562 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,035 psi | 72% | 2631 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,121 psi | 69% | 2648 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,038 psi | 49% | 2418 fps | 95.3% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,757 psi | 67% | 2684 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 53,026 psi | 83% | 2664 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 39,711 psi | 62% | 2470 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 37,782 psi | 59% | 2474 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 80% | 48,718 psi | 76% | 2612 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,587 psi | 75% | 2585 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 45,948 psi | 72% | 2579 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,055 psi | 83% | 2543 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,601 psi | 73% | 2539 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,478 psi | 59% | 2470 fps | 96.5% |
| Somchem S355 | <<locked>> | 80% | 52,750 psi | 83% | 2657 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 40,422 psi | 63% | 2461 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 42,177 psi | 66% | 2556 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,392 psi | 60% | 2461 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 80% | 50,546 psi | 79% | 2585 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,601 psi | 73% | 2592 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,199 psi | 52% | 2336 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 46,035 psi | 72% | 2595 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,985 psi | 58% | 2470 fps | 99.8% |
| Vihtavuori N560 | 58.7 gr | 84% | 41,336 psi | 65% | 2602 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 88% | 38,769 psi | 61% | 2539 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 96% | 44,222 psi | 69% | 2697 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,658 psi | 72% | 2552 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,688 psi | 75% | 2657 fps | 99.6% |
| Winchester StaBALL HD | 55.3 gr | 80% | 29,269 psi | 46% | 2418 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 34,925 psi | 55% | 2385 fps | 95.4% |
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 76 powders for 7 mm WSM loaded with the .285 | 173gr | Prvi Partizan FMJ BT. Hodgdon Retumbo delivers the highest muzzle velocity at 2,930 fps; across all powders the maximum-charge window runs from 1,709 fps to 2,930 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 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 173.0 gr projectile in 0.285" calls for a 1:12.0 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. Winchester StaBALL HD, Vihtavuori N560, Norma MRP rank at the top here: for 7 mm WSM with the .285 | 173gr | Prvi Partizan FMJ BT 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.