Load Specifications
Load data in caliber 7 mm WSM with .284 | 174gr | Prvi Partizan FMJ BT 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% | 55,230 psi | 87% | 2733 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,826 psi | 89% | 2762 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 57,653 psi | 90% | 2887 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 82% | 57,653 psi | 90% | 2717 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,290 psi | 90% | 2822 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 94% | 55,056 psi | 86% | 2828 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,342 psi | 77% | 2730 fps | 98.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,976 psi | 69% | 2694 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,740 psi | 90% | 2815 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,013 psi | 86% | 2776 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,913 psi | 89% | 2812 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,114 psi | 86% | 2825 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,405 psi | 88% | 2792 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,608 psi | 87% | 2854 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,768 psi | 89% | 2881 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,855 psi | 89% | 2792 fps | 97% |
| Bofors RP15 | <<locked>> | 96% | 54,244 psi | 85% | 2812 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,459 psi | 81% | 2799 fps | 99% |
| Bofors RP5 | <<locked>> | 94% | 55,114 psi | 86% | 2825 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 55,492 psi | 87% | 2710 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,418 psi | 85% | 2815 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 84% | 54,694 psi | 86% | 2766 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 57,246 psi | 90% | 2772 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 55,187 psi | 86% | 2769 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,667 psi | 90% | 2805 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,360 psi | 85% | 2690 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,418 psi | 85% | 2923 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 54,795 psi | 86% | 2799 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,188 psi | 58% | 1706 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,043 psi | 89% | 2753 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,710 psi | 89% | 2730 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 56,956 psi | 89% | 2753 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,985 psi | 88% | 2749 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 96% | 56,565 psi | 89% | 2861 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 39,595 psi | 62% | 2602 fps | 96.2% |
| Lovex S065 | <<locked>> | 86% | 57,464 psi | 90% | 2730 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,593 psi | 87% | 2726 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,318 psi | 88% | 2749 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,244 psi | 85% | 2749 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 39,610 psi | 62% | 2625 fps | 98.4% |
| Norma MRP | <<locked>> | 92% | 55,027 psi | 86% | 2844 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,013 psi | 86% | 2746 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 57,580 psi | 90% | 2884 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 88% | 57,479 psi | 90% | 2805 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,608 psi | 87% | 2818 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,942 psi | 59% | 1745 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,652 psi | 89% | 2785 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,868 psi | 86% | 2812 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,940 psi | 86% | 2920 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,806 psi | 78% | 2808 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 82% | 56,927 psi | 89% | 2707 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,042 psi | 86% | 2740 fps | 99% |
| Rottweil R 905 | <<locked>> | 92% | 56,362 psi | 88% | 2799 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 55,492 psi | 87% | 2710 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,464 psi | 90% | 2730 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,593 psi | 87% | 2726 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,594 psi | 89% | 2579 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,753 psi | 89% | 2687 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,927 psi | 88% | 2795 fps | 99.8% |
| Somchem S355 | <<locked>> | 82% | 56,507 psi | 89% | 2700 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,492 psi | 89% | 2733 fps | 98.7% |
| Somchem S365 | <<locked>> | 88% | 55,579 psi | 87% | 2749 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,768 psi | 89% | 2769 fps | 100% |
| Vihtavuori N150 | <<locked>> | 84% | 57,638 psi | 90% | 2674 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,000 psi | 89% | 2736 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,536 psi | 89% | 2756 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 55,970 psi | 88% | 2743 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,129 psi | 86% | 2769 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,882 psi | 86% | 2841 fps | 98.8% |
| Vihtavuori N565 | <<locked>> | 98% | 54,592 psi | 86% | 2822 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,068 psi | 80% | 2815 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,159 psi | 88% | 2697 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,694 psi | 86% | 2766 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,027 psi | 85% | 2874 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,927 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% | 34,577 psi | 54% | 2369 fps | 98% |
| Accurate 4350 | <<locked>> | 80% | 46,267 psi | 73% | 2605 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 43,569 psi | 68% | 2644 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 54,259 psi | 85% | 2671 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,522 psi | 60% | 2487 fps | 96.7% |
| ADI AR 2213 | <<locked>> | 84% | 39,334 psi | 62% | 2533 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 92% | 37,869 psi | 59% | 2500 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 90% | 31,966 psi | 50% | 2408 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,280 psi | 69% | 2612 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,329 psi | 80% | 2723 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,580 psi | 60% | 2484 fps | 96.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,447 psi | 54% | 2431 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,286 psi | 52% | 2398 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,892 psi | 45% | 2310 fps | 96.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,347 psi | 57% | 2533 fps | 99.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,154 psi | 79% | 2680 fps | 95.5% |
| Bofors RP15 | <<locked>> | 82% | 34,374 psi | 54% | 2425 fps | 95.2% |
| Bofors RP30 | <<locked>> | 90% | 36,709 psi | 58% | 2513 fps | 95.4% |
| Bofors RP5 | <<locked>> | 80% | 34,447 psi | 54% | 2431 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 48,834 psi | 77% | 2605 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 88% | 36,289 psi | 57% | 2467 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 47,848 psi | 75% | 2654 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 50,401 psi | 79% | 2667 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 84% | 42,076 psi | 66% | 2543 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,220 psi | 65% | 2526 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,930 psi | 66% | 2500 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,389 psi | 54% | 2503 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 47,514 psi | 74% | 2684 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,905 psi | 44% | 1522 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,309 psi | 69% | 2546 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,299 psi | 79% | 2631 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 44,106 psi | 69% | 2556 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,104 psi | 64% | 2487 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 84% | 37,956 psi | 59% | 2516 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 98% | 37,130 psi | 58% | 2546 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 47,950 psi | 75% | 2585 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 46,325 psi | 73% | 2579 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 29,834 psi | 47% | 2254 fps | 96.3% |
| Norma 204 | <<locked>> | 80% | 44,411 psi | 70% | 2585 fps | 98% |
| Norma 217 | <<locked>> | 94% | 32,619 psi | 51% | 2457 fps | 95.9% |
| Norma MRP | 56 gr | 80% | 36,100 psi | 57% | 2497 fps | 97.5% |
| Norma URP | <<locked>> | 80% | 45,513 psi | 71% | 2595 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 37,507 psi | 59% | 2520 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 44,251 psi | 69% | 2595 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 84% | 33,315 psi | 52% | 2402 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,442 psi | 45% | 1558 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,224 psi | 72% | 2628 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,295 psi | 69% | 2644 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,169 psi | 49% | 2415 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,946 psi | 67% | 2684 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 53,432 psi | 84% | 2661 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,030 psi | 63% | 2470 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 80% | 37,942 psi | 59% | 2470 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 80% | 48,834 psi | 77% | 2605 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,950 psi | 75% | 2585 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 46,325 psi | 73% | 2579 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,185 psi | 83% | 2536 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,934 psi | 74% | 2536 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,608 psi | 59% | 2464 fps | 96.6% |
| Somchem S355 | <<locked>> | 80% | 53,142 psi | 83% | 2654 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 40,538 psi | 64% | 2457 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 42,366 psi | 66% | 2552 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,537 psi | 60% | 2457 fps | 97.7% |
| Vihtavuori N150 | <<locked>> | 80% | 50,923 psi | 80% | 2582 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,746 psi | 73% | 2589 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,330 psi | 52% | 2336 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 46,180 psi | 72% | 2592 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,347 psi | 59% | 2470 fps | 99.8% |
| Vihtavuori N560 | 58.8 gr | 84% | 41,684 psi | 65% | 2605 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 88% | 38,943 psi | 61% | 2536 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 96% | 44,396 psi | 70% | 2694 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,774 psi | 72% | 2549 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,066 psi | 75% | 2657 fps | 99.7% |
| Winchester StaBALL HD | 55.4 gr | 80% | 29,544 psi | 46% | 2421 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,230 psi | 55% | 2385 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 .284 | 174gr | Prvi Partizan FMJ BT. Hodgdon Retumbo delivers the highest muzzle velocity at 2,923 fps; across all powders the maximum-charge window runs from 1,706 fps to 2,923 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 174.0 gr projectile in 0.284" 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 .284 | 174gr | Prvi Partizan FMJ BT 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.