Load Specifications
Load data in caliber 7 mm WSM with .284 | 174gr | Prvi Partizan SP 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% | 54,694 psi | 86% | 2726 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,217 psi | 88% | 2753 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 57,116 psi | 90% | 2877 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 82% | 57,305 psi | 90% | 2710 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,971 psi | 89% | 2812 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 94% | 54,549 psi | 85% | 2818 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,892 psi | 77% | 2720 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,555 psi | 68% | 2687 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 57,072 psi | 89% | 2808 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,043 psi | 89% | 2805 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,375 psi | 85% | 2766 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,362 psi | 88% | 2802 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,549 psi | 85% | 2815 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,840 psi | 88% | 2785 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,071 psi | 86% | 2844 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,159 psi | 88% | 2874 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,492 psi | 89% | 2782 fps | 96.9% |
| Bofors RP15 | <<locked>> | 98% | 57,261 psi | 90% | 2854 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,952 psi | 80% | 2789 fps | 98.9% |
| Bofors RP5 | <<locked>> | 94% | 54,549 psi | 85% | 2815 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 55,172 psi | 86% | 2707 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,954 psi | 85% | 2805 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 54,375 psi | 85% | 2756 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 56,927 psi | 89% | 2766 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 54,636 psi | 86% | 2759 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,116 psi | 90% | 2795 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,276 psi | 90% | 2730 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,925 psi | 85% | 2913 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 54,534 psi | 85% | 2792 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,086 psi | 58% | 1699 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,478 psi | 89% | 2740 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,420 psi | 88% | 2723 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 56,637 psi | 89% | 2746 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,753 psi | 87% | 2743 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 96% | 56,318 psi | 88% | 2854 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 39,204 psi | 61% | 2589 fps | 96% |
| Lovex S065 | <<locked>> | 86% | 57,188 psi | 90% | 2723 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,288 psi | 87% | 2720 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,782 psi | 87% | 2740 fps | 100% |
| Norma 204 | <<locked>> | 88% | 57,740 psi | 90% | 2802 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 39,160 psi | 61% | 2615 fps | 98.3% |
| Norma MRP | <<locked>> | 92% | 54,433 psi | 85% | 2835 fps | 100% |
| Norma URP | <<locked>> | 86% | 54,679 psi | 86% | 2740 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 57,014 psi | 89% | 2874 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 88% | 57,188 psi | 90% | 2799 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,114 psi | 86% | 2808 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,072 psi | 60% | 1745 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,318 psi | 88% | 2779 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,563 psi | 86% | 2808 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,505 psi | 85% | 2913 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,385 psi | 77% | 2802 fps | 97.5% |
| Rottweil R 903 | <<locked>> | 82% | 56,507 psi | 89% | 2700 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,491 psi | 85% | 2730 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 92% | 56,115 psi | 88% | 2795 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 55,172 psi | 86% | 2707 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,188 psi | 90% | 2723 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,288 psi | 87% | 2720 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,231 psi | 88% | 2572 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,492 psi | 89% | 2680 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,666 psi | 87% | 2789 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 56,159 psi | 88% | 2694 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,072 psi | 88% | 2723 fps | 98.6% |
| Somchem S365 | <<locked>> | 88% | 54,940 psi | 86% | 2740 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,492 psi | 89% | 2766 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 57,319 psi | 90% | 2667 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,376 psi | 88% | 2730 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,999 psi | 88% | 2746 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 55,666 psi | 87% | 2736 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,549 psi | 85% | 2759 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,317 psi | 85% | 2831 fps | 98.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 57,609 psi | 90% | 2864 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,633 psi | 79% | 2808 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,898 psi | 88% | 2690 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,375 psi | 85% | 2756 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 57,276 psi | 90% | 2917 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,420 psi | 88% | 2762 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% | 34,272 psi | 54% | 2362 fps | 97.9% |
| Accurate 4350 | <<locked>> | 80% | 45,890 psi | 72% | 2598 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 43,105 psi | 68% | 2635 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 53,896 psi | 84% | 2661 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,232 psi | 60% | 2480 fps | 96.5% |
| ADI AR 2213 | <<locked>> | 84% | 39,073 psi | 61% | 2526 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 92% | 37,695 psi | 59% | 2493 fps | 95% |
| ADI AR 2225 | <<locked>> | 90% | 31,633 psi | 50% | 2398 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,638 psi | 61% | 2480 fps | 96.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,947 psi | 69% | 2602 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,691 psi | 79% | 2713 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,290 psi | 60% | 2477 fps | 96.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,142 psi | 54% | 2421 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,967 psi | 52% | 2392 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,645 psi | 45% | 2300 fps | 96.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,853 psi | 56% | 2523 fps | 99.4% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 49,777 psi | 78% | 2671 fps | 95.3% |
| Bofors RP15 | <<locked>> | 82% | 34,055 psi | 53% | 2418 fps | 95% |
| Bofors RP30 | <<locked>> | 90% | 36,434 psi | 57% | 2507 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 34,142 psi | 54% | 2421 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 48,501 psi | 76% | 2598 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 35,897 psi | 56% | 2454 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 47,529 psi | 74% | 2648 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 50,082 psi | 78% | 2657 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 84% | 41,785 psi | 65% | 2536 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 84% | 40,973 psi | 64% | 2520 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,553 psi | 65% | 2493 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 33,982 psi | 53% | 2490 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 46,992 psi | 74% | 2671 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,760 psi | 44% | 1519 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,005 psi | 69% | 2536 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,980 psi | 78% | 2625 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 43,772 psi | 69% | 2549 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 40,843 psi | 64% | 2480 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 86% | 40,205 psi | 63% | 2562 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 98% | 36,753 psi | 58% | 2533 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 47,616 psi | 75% | 2579 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 45,992 psi | 72% | 2569 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 29,544 psi | 46% | 2244 fps | 96.1% |
| Norma 204 | <<locked>> | 80% | 44,121 psi | 69% | 2575 fps | 97.9% |
| Norma 217 | <<locked>> | 94% | 32,213 psi | 50% | 2444 fps | 95.7% |
| Norma MRP | 55.5 gr | 80% | 35,607 psi | 56% | 2484 fps | 97.3% |
| Norma URP | <<locked>> | 80% | 45,165 psi | 71% | 2589 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 37,072 psi | 58% | 2507 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 43,961 psi | 69% | 2589 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 33,098 psi | 52% | 2395 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,500 psi | 45% | 1558 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,890 psi | 72% | 2621 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,990 psi | 69% | 2638 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 30,821 psi | 48% | 2402 fps | 95.2% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,511 psi | 67% | 2674 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 53,055 psi | 83% | 2654 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 39,769 psi | 62% | 2464 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 37,623 psi | 59% | 2464 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 80% | 48,501 psi | 76% | 2598 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,616 psi | 75% | 2579 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 45,992 psi | 72% | 2569 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,794 psi | 83% | 2530 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,398 psi | 73% | 2526 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,304 psi | 58% | 2457 fps | 96.4% |
| Somchem S355 | <<locked>> | 80% | 52,765 psi | 83% | 2648 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 40,292 psi | 63% | 2454 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 41,989 psi | 66% | 2543 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,203 psi | 60% | 2448 fps | 97.5% |
| Vihtavuori N150 | <<locked>> | 80% | 50,575 psi | 79% | 2575 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,412 psi | 73% | 2579 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,054 psi | 52% | 2329 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 45,861 psi | 72% | 2585 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,985 psi | 58% | 2461 fps | 99.8% |
| Vihtavuori N560 | 58.3 gr | 84% | 41,205 psi | 65% | 2592 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 88% | 38,435 psi | 60% | 2523 fps | 95% |
| Vihtavuori N568 | <<locked>> | 96% | 43,961 psi | 69% | 2684 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,498 psi | 71% | 2543 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,747 psi | 75% | 2651 fps | 99.6% |
| Winchester StaBALL HD | 55 gr | 80% | 29,283 psi | 46% | 2411 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 34,795 psi | 55% | 2372 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 .284 | 174gr | Prvi Partizan SP. Winchester StaBALL HD delivers the highest muzzle velocity at 2,917 fps; across all powders the maximum-charge window runs from 1,699 fps to 2,917 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 174.0 gr projectile in 0.284" calls for a 1:11.5 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 .284 | 174gr | Prvi Partizan SP 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.