Load Specifications
Load data in caliber 7 mm WSM with .284 | 175gr | Speer Grand Slam 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% | 55,419 psi | 87% | 2730 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,681 psi | 89% | 2753 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 57,638 psi | 90% | 2877 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 82% | 57,464 psi | 90% | 2707 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,435 psi | 90% | 2815 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 94% | 54,969 psi | 86% | 2818 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,255 psi | 77% | 2723 fps | 98.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,947 psi | 69% | 2687 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 57,508 psi | 90% | 2808 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,551 psi | 90% | 2805 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,882 psi | 86% | 2766 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,797 psi | 89% | 2802 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,027 psi | 86% | 2812 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,333 psi | 88% | 2782 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,564 psi | 87% | 2844 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,753 psi | 89% | 2874 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,855 psi | 89% | 2782 fps | 97% |
| Bofors RP15 | <<locked>> | 98% | 57,711 psi | 90% | 2851 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,634 psi | 81% | 2792 fps | 99.1% |
| Bofors RP5 | <<locked>> | 94% | 55,027 psi | 86% | 2812 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 55,332 psi | 87% | 2700 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,389 psi | 85% | 2805 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 84% | 54,578 psi | 86% | 2753 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 57,348 psi | 90% | 2766 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 92% | 55,085 psi | 86% | 2759 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,595 psi | 90% | 2795 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,215 psi | 85% | 2680 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,389 psi | 85% | 2917 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 54,984 psi | 86% | 2792 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,173 psi | 58% | 1699 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,913 psi | 89% | 2740 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,811 psi | 89% | 2723 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 57,087 psi | 89% | 2746 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,144 psi | 88% | 2743 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 96% | 56,797 psi | 89% | 2858 fps | 99.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 39,566 psi | 62% | 2592 fps | 96.3% |
| Lovex S065 | <<locked>> | 86% | 57,595 psi | 90% | 2723 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,724 psi | 87% | 2720 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,231 psi | 88% | 2740 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,360 psi | 85% | 2746 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 39,566 psi | 62% | 2615 fps | 98.5% |
| Norma MRP | <<locked>> | 92% | 54,969 psi | 86% | 2838 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,143 psi | 86% | 2736 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 57,508 psi | 90% | 2874 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 88% | 57,638 psi | 90% | 2799 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,912 psi | 88% | 2812 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,927 psi | 59% | 1739 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,797 psi | 89% | 2779 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,056 psi | 86% | 2808 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,955 psi | 86% | 2913 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,821 psi | 78% | 2805 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 57,000 psi | 89% | 2700 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,911 psi | 86% | 2730 fps | 99% |
| Rottweil R 905 | <<locked>> | 92% | 56,565 psi | 89% | 2795 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 55,332 psi | 87% | 2700 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,595 psi | 90% | 2723 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,724 psi | 87% | 2720 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,681 psi | 89% | 2572 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,666 psi | 89% | 2677 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,130 psi | 88% | 2789 fps | 99.8% |
| Somchem S355 | <<locked>> | 82% | 56,579 psi | 89% | 2694 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,434 psi | 88% | 2723 fps | 98.7% |
| Somchem S365 | <<locked>> | 88% | 55,463 psi | 87% | 2736 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,927 psi | 89% | 2766 fps | 100% |
| Vihtavuori N150 | <<locked>> | 84% | 57,725 psi | 90% | 2667 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,840 psi | 89% | 2730 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,420 psi | 88% | 2746 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 56,101 psi | 88% | 2736 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,042 psi | 86% | 2759 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,766 psi | 86% | 2831 fps | 98.8% |
| Vihtavuori N565 | <<locked>> | 98% | 54,520 psi | 85% | 2812 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,039 psi | 80% | 2808 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,318 psi | 88% | 2690 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,839 psi | 86% | 2756 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 53,983 psi | 85% | 2864 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,840 psi | 89% | 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% | 34,621 psi | 54% | 2362 fps | 98% |
| Accurate 4350 | <<locked>> | 80% | 46,325 psi | 73% | 2598 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 43,511 psi | 68% | 2638 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 54,056 psi | 85% | 2657 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,609 psi | 61% | 2484 fps | 96.7% |
| ADI AR 2213 | <<locked>> | 84% | 39,407 psi | 62% | 2530 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 92% | 38,014 psi | 60% | 2497 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 88% | 30,023 psi | 47% | 2346 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 39,015 psi | 61% | 2484 fps | 96.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,353 psi | 70% | 2605 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,184 psi | 80% | 2713 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,667 psi | 61% | 2477 fps | 96.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,519 psi | 54% | 2425 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,156 psi | 52% | 2388 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,921 psi | 45% | 2306 fps | 96.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,274 psi | 57% | 2523 fps | 99.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,299 psi | 79% | 2674 fps | 95.5% |
| Bofors RP15 | <<locked>> | 82% | 34,432 psi | 54% | 2421 fps | 95.2% |
| Bofors RP30 | <<locked>> | 90% | 36,811 psi | 58% | 2510 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 34,519 psi | 54% | 2425 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 48,921 psi | 77% | 2598 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 88% | 36,216 psi | 57% | 2457 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 47,921 psi | 75% | 2648 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 50,502 psi | 79% | 2661 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 84% | 42,163 psi | 66% | 2536 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,307 psi | 65% | 2520 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,974 psi | 66% | 2493 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,301 psi | 54% | 2497 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 47,427 psi | 74% | 2674 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,862 psi | 44% | 1516 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,353 psi | 70% | 2536 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,343 psi | 79% | 2625 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 44,179 psi | 69% | 2549 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 40,973 psi | 64% | 2477 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 84% | 37,840 psi | 59% | 2507 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 98% | 37,086 psi | 58% | 2536 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 47,761 psi | 75% | 2575 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 46,137 psi | 72% | 2566 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 29,892 psi | 47% | 2247 fps | 96.4% |
| Norma 204 | <<locked>> | 80% | 44,483 psi | 70% | 2579 fps | 98.1% |
| Norma 217 | <<locked>> | 94% | 32,532 psi | 51% | 2448 fps | 95.9% |
| Norma MRP | 55.7 gr | 80% | 35,984 psi | 56% | 2487 fps | 97.5% |
| Norma URP | <<locked>> | 80% | 45,368 psi | 71% | 2585 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 37,420 psi | 59% | 2510 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 44,324 psi | 69% | 2589 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 84% | 33,402 psi | 52% | 2398 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,413 psi | 45% | 1552 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,340 psi | 73% | 2621 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,411 psi | 70% | 2638 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,111 psi | 49% | 2408 fps | 95.6% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,931 psi | 67% | 2674 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 53,272 psi | 83% | 2651 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,103 psi | 63% | 2464 fps | 96% |
| Rottweil R 905 | <<locked>> | 80% | 37,985 psi | 60% | 2464 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 80% | 48,921 psi | 77% | 2598 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,761 psi | 75% | 2575 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 46,137 psi | 72% | 2566 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,229 psi | 83% | 2530 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,746 psi | 73% | 2526 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,652 psi | 59% | 2461 fps | 96.7% |
| Somchem S355 | <<locked>> | 80% | 52,953 psi | 83% | 2644 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 40,625 psi | 64% | 2454 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 42,424 psi | 66% | 2543 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,595 psi | 60% | 2451 fps | 97.7% |
| Vihtavuori N150 | <<locked>> | 80% | 50,734 psi | 80% | 2572 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,847 psi | 73% | 2579 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,388 psi | 52% | 2329 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 46,238 psi | 72% | 2585 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,376 psi | 59% | 2464 fps | 99.8% |
| Vihtavuori N560 | 57.1 gr | 82% | 38,812 psi | 61% | 2536 fps | 95% |
| Vihtavuori N565 | <<locked>> | 88% | 38,827 psi | 61% | 2530 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 96% | 44,396 psi | 70% | 2687 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,905 psi | 72% | 2543 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,167 psi | 75% | 2651 fps | 99.7% |
| Winchester StaBALL HD | 55.2 gr | 80% | 29,588 psi | 46% | 2415 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,114 psi | 55% | 2375 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 76 powders for 7 mm WSM loaded with the .284 | 175gr | Speer Grand Slam. Hodgdon Retumbo 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 175.0 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 | 175gr | Speer Grand Slam 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.