Load Specifications
Load data in caliber 7 mm WSM with .285 | 173gr | Prvi Partizan SP bullet and 75 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% | 55,637 psi | 87% | 2749 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,130 psi | 90% | 2776 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 53,954 psi | 85% | 2838 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 82% | 57,682 psi | 90% | 2730 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,711 psi | 90% | 2835 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 94% | 55,448 psi | 87% | 2841 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,617 psi | 78% | 2746 fps | 98.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,237 psi | 69% | 2710 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,143 psi | 85% | 2776 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,259 psi | 87% | 2789 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,043 psi | 89% | 2822 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,477 psi | 87% | 2838 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,594 psi | 89% | 2805 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,927 psi | 88% | 2867 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 57,174 psi | 90% | 2897 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,855 psi | 89% | 2799 fps | 97% |
| Bofors RP15 | <<locked>> | 96% | 54,404 psi | 85% | 2822 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,764 psi | 81% | 2812 fps | 99.1% |
| Bofors RP5 | <<locked>> | 94% | 55,477 psi | 87% | 2838 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 55,738 psi | 87% | 2726 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,737 psi | 86% | 2831 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 84% | 54,911 psi | 86% | 2776 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 57,479 psi | 90% | 2785 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 92% | 55,288 psi | 87% | 2782 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,201 psi | 85% | 2766 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,607 psi | 86% | 2703 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,781 psi | 86% | 2940 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 55,230 psi | 87% | 2815 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,202 psi | 58% | 1713 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,217 psi | 90% | 2762 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,956 psi | 89% | 2743 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 57,145 psi | 90% | 2766 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,391 psi | 88% | 2762 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 96% | 56,971 psi | 89% | 2877 fps | 99.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 39,900 psi | 63% | 2615 fps | 96.3% |
| Lovex S065 | <<locked>> | 86% | 57,711 psi | 90% | 2743 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,825 psi | 87% | 2740 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,768 psi | 89% | 2762 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,636 psi | 86% | 2766 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 39,885 psi | 63% | 2638 fps | 98.5% |
| Norma MRP | <<locked>> | 92% | 55,172 psi | 86% | 2858 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,259 psi | 87% | 2759 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 53,853 psi | 84% | 2838 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 54,244 psi | 85% | 2766 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,927 psi | 88% | 2831 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,956 psi | 59% | 1752 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,840 psi | 89% | 2799 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,317 psi | 87% | 2828 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,492 psi | 87% | 2940 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,314 psi | 79% | 2828 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 57,188 psi | 90% | 2723 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,187 psi | 86% | 2749 fps | 99% |
| Rottweil R 905 | <<locked>> | 92% | 56,550 psi | 89% | 2812 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 55,738 psi | 87% | 2726 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,711 psi | 90% | 2743 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,825 psi | 87% | 2740 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,608 psi | 89% | 2589 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,956 psi | 89% | 2700 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,115 psi | 88% | 2808 fps | 99.8% |
| Somchem S355 | <<locked>> | 82% | 56,536 psi | 89% | 2710 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,594 psi | 89% | 2743 fps | 98.7% |
| Somchem S365 | <<locked>> | 88% | 55,825 psi | 87% | 2759 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,159 psi | 90% | 2785 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 54,433 psi | 85% | 2641 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,217 psi | 90% | 2753 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,594 psi | 89% | 2766 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 56,173 psi | 88% | 2756 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,347 psi | 87% | 2782 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,984 psi | 86% | 2851 fps | 98.8% |
| Vihtavuori N565 | <<locked>> | 98% | 54,882 psi | 86% | 2835 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,387 psi | 81% | 2828 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,550 psi | 89% | 2710 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,911 psi | 86% | 2776 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,128 psi | 85% | 2887 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,029 psi | 89% | 2782 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% | 34,780 psi | 55% | 2382 fps | 98% |
| Accurate 4350 | <<locked>> | 80% | 46,543 psi | 73% | 2618 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 43,743 psi | 69% | 2657 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 54,302 psi | 85% | 2680 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,769 psi | 61% | 2500 fps | 96.7% |
| ADI AR 2213 | <<locked>> | 84% | 39,523 psi | 62% | 2546 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 92% | 38,000 psi | 60% | 2513 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 88% | 30,066 psi | 47% | 2359 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,585 psi | 70% | 2625 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,314 psi | 80% | 2733 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,798 psi | 61% | 2497 fps | 96.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,679 psi | 54% | 2444 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,344 psi | 52% | 2408 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,066 psi | 46% | 2323 fps | 96.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,550 psi | 57% | 2546 fps | 99.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,415 psi | 79% | 2694 fps | 95.5% |
| Bofors RP15 | <<locked>> | 82% | 34,577 psi | 54% | 2438 fps | 95.2% |
| Bofors RP30 | <<locked>> | 90% | 37,028 psi | 58% | 2530 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 34,679 psi | 54% | 2444 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 49,110 psi | 77% | 2621 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 88% | 36,448 psi | 57% | 2480 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 48,066 psi | 75% | 2667 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 50,676 psi | 79% | 2680 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 84% | 42,264 psi | 66% | 2552 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,423 psi | 65% | 2536 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,003 psi | 66% | 2510 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,548 psi | 54% | 2516 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 47,732 psi | 75% | 2694 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,804 psi | 44% | 1529 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,541 psi | 70% | 2559 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,546 psi | 79% | 2644 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 44,150 psi | 69% | 2566 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,307 psi | 65% | 2500 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 84% | 38,159 psi | 60% | 2530 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 98% | 37,231 psi | 58% | 2556 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 47,979 psi | 75% | 2595 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 46,354 psi | 73% | 2589 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 30,081 psi | 47% | 2267 fps | 96.4% |
| Norma 204 | <<locked>> | 80% | 44,657 psi | 70% | 2598 fps | 98.1% |
| Norma 217 | <<locked>> | 94% | 32,706 psi | 51% | 2467 fps | 95.9% |
| Norma MRP | 56.5 gr | 80% | 36,289 psi | 57% | 2510 fps | 97.5% |
| Norma URP | <<locked>> | 80% | 45,571 psi | 71% | 2605 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 37,695 psi | 59% | 2533 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 44,454 psi | 70% | 2608 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 84% | 33,620 psi | 53% | 2418 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,543 psi | 45% | 1568 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,456 psi | 73% | 2641 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,512 psi | 70% | 2654 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,270 psi | 49% | 2425 fps | 95.6% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 43,192 psi | 68% | 2697 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 53,476 psi | 84% | 2671 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,059 psi | 63% | 2480 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 80% | 38,174 psi | 60% | 2484 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 80% | 49,110 psi | 77% | 2621 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,979 psi | 75% | 2595 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 46,354 psi | 73% | 2589 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,476 psi | 84% | 2549 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,949 psi | 74% | 2546 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,855 psi | 59% | 2480 fps | 96.6% |
| Somchem S355 | <<locked>> | 80% | 53,200 psi | 83% | 2664 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 40,712 psi | 64% | 2470 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 42,641 psi | 67% | 2566 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,754 psi | 61% | 2470 fps | 97.7% |
| Vihtavuori N150 | <<locked>> | 80% | 50,952 psi | 80% | 2592 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,007 psi | 74% | 2598 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,562 psi | 53% | 2349 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 46,383 psi | 73% | 2605 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,405 psi | 59% | 2480 fps | 99.8% |
| Vihtavuori N560 | 57.9 gr | 82% | 39,117 psi | 61% | 2559 fps | 95% |
| Vihtavuori N565 | <<locked>> | 88% | 39,088 psi | 61% | 2549 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 96% | 44,701 psi | 70% | 2707 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,963 psi | 72% | 2559 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,312 psi | 76% | 2671 fps | 99.7% |
| Winchester StaBALL HD | 55.9 gr | 80% | 29,718 psi | 47% | 2431 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,244 psi | 55% | 2392 fps | 95.6% |
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 79 powders for 7 mm WSM loaded with the .285 | 173gr | Prvi Partizan SP. Hodgdon Retumbo delivers the highest muzzle velocity at 2,940 fps; across all powders the maximum-charge window runs from 1,713 fps to 2,940 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 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 1:12.5 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 SP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, Vihtavuori N170 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.