Load Specifications
Load data in caliber 7 mm WSM with .284 | 174gr | Prvi Partizan PSP BT bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, IMR 7828 SSC and Vihtavuori N560.
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% | 57,696 psi | 90% | 2762 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,680 psi | 87% | 2743 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 56,275 psi | 88% | 2864 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 82% | 56,550 psi | 89% | 2697 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,333 psi | 88% | 2802 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 96% | 57,624 psi | 90% | 2861 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,153 psi | 75% | 2703 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,931 psi | 67% | 2671 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 56,449 psi | 88% | 2795 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,579 psi | 89% | 2795 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 57,493 psi | 90% | 2805 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,753 psi | 87% | 2789 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 57,537 psi | 90% | 2854 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,129 psi | 86% | 2772 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,186 psi | 85% | 2831 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,187 psi | 86% | 2858 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 55,869 psi | 88% | 2769 fps | 96.6% |
| Bofors RP15 | <<locked>> | 98% | 56,362 psi | 88% | 2838 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,299 psi | 79% | 2776 fps | 98.8% |
| Bofors RP5 | <<locked>> | 96% | 57,537 psi | 90% | 2854 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 54,491 psi | 85% | 2690 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,171 psi | 83% | 2789 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 86% | 57,203 psi | 90% | 2795 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 56,217 psi | 88% | 2753 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 94% | 57,696 psi | 90% | 2799 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,536 psi | 89% | 2782 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,826 psi | 89% | 2720 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,055 psi | 83% | 2897 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 53,577 psi | 84% | 2776 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,188 psi | 58% | 1699 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,101 psi | 88% | 2733 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,028 psi | 88% | 2713 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 55,912 psi | 88% | 2733 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,201 psi | 87% | 2730 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 96% | 55,419 psi | 87% | 2838 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 56,492 psi | 89% | 2710 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,592 psi | 86% | 2707 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,129 psi | 86% | 2726 fps | 100% |
| Norma 204 | <<locked>> | 88% | 57,101 psi | 89% | 2789 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 38,609 psi | 61% | 2602 fps | 98.1% |
| Norma MRP | <<locked>> | 94% | 57,493 psi | 90% | 2877 fps | 100% |
| Norma URP | <<locked>> | 88% | 57,479 psi | 90% | 2772 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,086 psi | 88% | 2858 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 56,507 psi | 89% | 2785 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,186 psi | 85% | 2792 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,942 psi | 59% | 1739 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 57,348 psi | 90% | 2795 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,608 psi | 87% | 2769 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 57,537 psi | 90% | 2844 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,722 psi | 84% | 2897 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,414 psi | 76% | 2782 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 82% | 55,767 psi | 87% | 2687 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,377 psi | 90% | 2766 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 92% | 55,143 psi | 86% | 2776 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 54,491 psi | 85% | 2690 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,492 psi | 89% | 2710 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,592 psi | 86% | 2707 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,290 psi | 90% | 2746 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,753 psi | 87% | 2562 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,869 psi | 88% | 2667 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,708 psi | 86% | 2772 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 55,637 psi | 87% | 2684 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,259 psi | 87% | 2710 fps | 98.4% |
| Somchem S365 | <<locked>> | 88% | 54,462 psi | 85% | 2730 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,869 psi | 88% | 2753 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 56,565 psi | 89% | 2654 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,927 psi | 88% | 2720 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,114 psi | 86% | 2733 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 55,027 psi | 86% | 2726 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 57,348 psi | 90% | 2799 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 57,276 psi | 90% | 2874 fps | 99% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,753 psi | 89% | 2851 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,850 psi | 78% | 2792 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,303 psi | 87% | 2680 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 57,450 psi | 90% | 2799 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 56,130 psi | 88% | 2904 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,550 psi | 87% | 2746 fps | 99.6% |
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% | 33,837 psi | 53% | 2349 fps | 97.7% |
| Accurate 4350 | <<locked>> | 80% | 45,353 psi | 71% | 2585 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 42,482 psi | 67% | 2618 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 53,417 psi | 84% | 2654 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 37,826 psi | 59% | 2467 fps | 96.3% |
| ADI AR 2213 | <<locked>> | 84% | 38,508 psi | 60% | 2510 fps | 95% |
| ADI AR 2217 | <<locked>> | 94% | 39,523 psi | 62% | 2533 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 90% | 31,227 psi | 49% | 2382 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,189 psi | 60% | 2470 fps | 96.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,381 psi | 68% | 2592 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,154 psi | 79% | 2703 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,884 psi | 59% | 2464 fps | 96.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 33,736 psi | 53% | 2408 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,547 psi | 51% | 2379 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,297 psi | 44% | 2290 fps | 96.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,418 psi | 56% | 2510 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 49,400 psi | 77% | 2657 fps | 95.1% |
| Bofors RP15 | <<locked>> | 84% | 35,766 psi | 56% | 2457 fps | 95.6% |
| Bofors RP30 | <<locked>> | 90% | 35,882 psi | 56% | 2493 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 33,736 psi | 53% | 2408 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 48,066 psi | 75% | 2589 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 90% | 37,985 psi | 60% | 2500 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 47,036 psi | 74% | 2635 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 49,603 psi | 78% | 2648 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 41,205 psi | 65% | 2520 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 84% | 40,379 psi | 63% | 2503 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,060 psi | 64% | 2484 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 33,620 psi | 53% | 2480 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 46,340 psi | 73% | 2657 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,746 psi | 43% | 1512 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,555 psi | 68% | 2526 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,516 psi | 78% | 2612 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 43,294 psi | 68% | 2539 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 40,277 psi | 63% | 2467 fps | 95.2% |
| IMR 7828 SSC | 56.8 gr | 86% | 39,653 psi | 62% | 2549 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 47,152 psi | 74% | 2566 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 45,295 psi | 71% | 2556 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 29,138 psi | 46% | 2234 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 43,468 psi | 68% | 2562 fps | 97.7% |
| Norma 217 | <<locked>> | 94% | 31,749 psi | 50% | 2428 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 35,186 psi | 55% | 2474 fps | 97.1% |
| Norma URP | <<locked>> | 80% | 44,454 psi | 70% | 2572 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 39,262 psi | 62% | 2556 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 43,265 psi | 68% | 2572 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 32,605 psi | 51% | 2382 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,485 psi | 45% | 1552 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 53,316 psi | 84% | 2743 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,208 psi | 71% | 2608 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,323 psi | 68% | 2621 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,706 psi | 51% | 2457 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 41,843 psi | 66% | 2654 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 52,286 psi | 82% | 2641 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 39,334 psi | 62% | 2451 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 80% | 37,159 psi | 58% | 2451 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 80% | 48,066 psi | 75% | 2589 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,152 psi | 74% | 2566 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 45,295 psi | 71% | 2556 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,592 psi | 84% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,301 psi | 82% | 2520 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,963 psi | 72% | 2516 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,854 psi | 58% | 2448 fps | 96.2% |
| Somchem S355 | <<locked>> | 80% | 52,272 psi | 82% | 2638 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 42,511 psi | 67% | 2493 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 41,437 psi | 65% | 2533 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,797 psi | 59% | 2438 fps | 97.4% |
| Vihtavuori N150 | <<locked>> | 80% | 49,850 psi | 78% | 2562 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,963 psi | 72% | 2569 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 32,677 psi | 51% | 2316 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 45,426 psi | 71% | 2575 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,506 psi | 57% | 2451 fps | 99.7% |
| Vihtavuori N560 | 57.6 gr | 84% | 40,582 psi | 64% | 2579 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 90% | 40,654 psi | 64% | 2569 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 96% | 43,250 psi | 68% | 2667 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,889 psi | 70% | 2533 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,036 psi | 74% | 2635 fps | 99.5% |
| Winchester StaBALL HD | 54.3 gr | 80% | 28,776 psi | 45% | 2395 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 34,389 psi | 54% | 2362 fps | 95.1% |
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 77 powders for 7 mm WSM loaded with the .284 | 174gr | Prvi Partizan PSP BT. Winchester StaBALL HD delivers the highest muzzle velocity at 2,904 fps; across all powders the maximum-charge window runs from 1,699 fps to 2,904 fps. ADI AR 2217 gives the best case fill at 100 %, and 77 of the 77 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 1:11.0 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, IMR 7828 SSC, Vihtavuori N560 rank at the top here: for 7 mm WSM with the .284 | 174gr | Prvi Partizan PSP 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.