Load Specifications
Load data in caliber 7 mm WSM with .284 | 173gr | Sellier & Bellot SPCE 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, 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>> | 94% | 54,447 psi | 85% | 2730 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,985 psi | 88% | 2759 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 56,898 psi | 89% | 2881 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 82% | 56,869 psi | 89% | 2713 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,782 psi | 89% | 2818 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 94% | 54,331 psi | 85% | 2822 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,675 psi | 76% | 2723 fps | 98.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,366 psi | 68% | 2687 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,840 psi | 89% | 2812 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,143 psi | 85% | 2772 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,173 psi | 88% | 2805 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,288 psi | 85% | 2818 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,564 psi | 87% | 2789 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,795 psi | 86% | 2848 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,883 psi | 88% | 2877 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,101 psi | 88% | 2782 fps | 96.7% |
| Bofors RP15 | <<locked>> | 98% | 57,029 psi | 89% | 2858 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,676 psi | 79% | 2792 fps | 98.8% |
| Bofors RP5 | <<locked>> | 94% | 54,288 psi | 85% | 2818 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 54,752 psi | 86% | 2707 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,708 psi | 84% | 2808 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 86% | 57,682 psi | 90% | 2812 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 56,739 psi | 89% | 2769 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 54,447 psi | 85% | 2762 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,927 psi | 89% | 2799 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,087 psi | 89% | 2733 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,650 psi | 84% | 2917 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 54,012 psi | 85% | 2792 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,101 psi | 58% | 1706 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,318 psi | 88% | 2746 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,260 psi | 88% | 2730 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 56,159 psi | 88% | 2746 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,550 psi | 87% | 2746 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 96% | 55,796 psi | 87% | 2854 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 57,014 psi | 89% | 2726 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,143 psi | 86% | 2726 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,535 psi | 87% | 2743 fps | 100% |
| Norma 204 | <<locked>> | 88% | 57,261 psi | 90% | 2802 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 38,943 psi | 61% | 2618 fps | 98.2% |
| Norma MRP | <<locked>> | 92% | 54,230 psi | 85% | 2841 fps | 100% |
| Norma URP | <<locked>> | 86% | 54,505 psi | 85% | 2743 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,724 psi | 89% | 2877 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 88% | 56,681 psi | 89% | 2799 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,810 psi | 86% | 2812 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,855 psi | 59% | 1745 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 57,638 psi | 90% | 2808 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,840 psi | 88% | 2782 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,056 psi | 85% | 2808 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,215 psi | 85% | 2917 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,110 psi | 77% | 2802 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 82% | 56,072 psi | 88% | 2703 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,288 psi | 85% | 2733 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 92% | 55,608 psi | 87% | 2792 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 54,752 psi | 86% | 2707 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,014 psi | 89% | 2726 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,143 psi | 86% | 2726 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,566 psi | 90% | 2759 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,101 psi | 88% | 2579 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,086 psi | 88% | 2684 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,172 psi | 86% | 2789 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 55,956 psi | 88% | 2700 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,854 psi | 88% | 2730 fps | 98.5% |
| Somchem S365 | <<locked>> | 88% | 54,737 psi | 86% | 2743 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,289 psi | 88% | 2769 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 57,116 psi | 90% | 2674 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,202 psi | 88% | 2733 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,753 psi | 87% | 2749 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 55,201 psi | 87% | 2740 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,317 psi | 85% | 2766 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 57,667 psi | 90% | 2890 fps | 99.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 57,392 psi | 90% | 2871 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,386 psi | 79% | 2808 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,709 psi | 87% | 2697 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,201 psi | 85% | 2762 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 56,927 psi | 89% | 2920 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,912 psi | 88% | 2762 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% | 34,098 psi | 53% | 2365 fps | 97.8% |
| Accurate 4350 | <<locked>> | 80% | 45,687 psi | 72% | 2602 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 42,902 psi | 67% | 2638 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 53,490 psi | 84% | 2664 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,101 psi | 60% | 2484 fps | 96.4% |
| ADI AR 2213 | <<locked>> | 84% | 38,899 psi | 61% | 2530 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 94% | 39,798 psi | 62% | 2549 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 90% | 31,502 psi | 49% | 2398 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,743 psi | 69% | 2608 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,473 psi | 79% | 2717 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,159 psi | 60% | 2480 fps | 96.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,011 psi | 53% | 2425 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,808 psi | 51% | 2392 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,514 psi | 45% | 2303 fps | 96.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,679 psi | 56% | 2523 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 49,632 psi | 78% | 2674 fps | 95.1% |
| Bofors RP15 | <<locked>> | 84% | 36,216 psi | 57% | 2477 fps | 95.8% |
| Bofors RP30 | <<locked>> | 90% | 36,230 psi | 57% | 2510 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 34,011 psi | 53% | 2425 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 48,385 psi | 76% | 2605 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 90% | 38,145 psi | 60% | 2513 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 47,326 psi | 74% | 2651 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 49,937 psi | 78% | 2664 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 84% | 41,394 psi | 65% | 2533 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 84% | 40,799 psi | 64% | 2520 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,408 psi | 65% | 2497 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 33,808 psi | 53% | 2493 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 46,789 psi | 73% | 2674 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,746 psi | 43% | 1522 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,830 psi | 69% | 2539 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,806 psi | 78% | 2628 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 43,598 psi | 68% | 2552 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 40,509 psi | 63% | 2480 fps | 95.3% |
| IMR 7828 SSC | 57.4 gr | 86% | 39,871 psi | 62% | 2562 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 47,471 psi | 74% | 2582 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 45,600 psi | 71% | 2572 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 29,399 psi | 46% | 2247 fps | 96% |
| Norma 204 | <<locked>> | 80% | 43,729 psi | 69% | 2575 fps | 97.8% |
| Norma 217 | <<locked>> | 94% | 32,053 psi | 50% | 2444 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 35,447 psi | 56% | 2487 fps | 97.2% |
| Norma URP | <<locked>> | 80% | 44,773 psi | 70% | 2589 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 36,912 psi | 58% | 2510 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 43,555 psi | 68% | 2585 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 32,953 psi | 52% | 2398 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,500 psi | 45% | 1562 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 53,621 psi | 84% | 2756 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,672 psi | 72% | 2625 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,787 psi | 69% | 2641 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 30,661 psi | 48% | 2405 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,308 psi | 66% | 2674 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 52,634 psi | 82% | 2654 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 39,610 psi | 62% | 2467 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 80% | 37,449 psi | 59% | 2467 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 80% | 48,385 psi | 76% | 2605 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,471 psi | 74% | 2582 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 45,600 psi | 71% | 2572 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,882 psi | 84% | 2710 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,678 psi | 83% | 2536 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,253 psi | 72% | 2530 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,115 psi | 58% | 2461 fps | 96.3% |
| Somchem S355 | <<locked>> | 80% | 52,620 psi | 82% | 2654 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 40,161 psi | 63% | 2454 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 41,785 psi | 65% | 2549 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,072 psi | 60% | 2451 fps | 97.4% |
| Vihtavuori N150 | <<locked>> | 80% | 50,154 psi | 79% | 2579 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,267 psi | 73% | 2582 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 32,924 psi | 52% | 2329 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 45,672 psi | 72% | 2589 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,796 psi | 58% | 2464 fps | 99.7% |
| Vihtavuori N560 | 58.3 gr | 84% | 41,002 psi | 64% | 2595 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 90% | 41,031 psi | 64% | 2585 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 96% | 43,758 psi | 69% | 2687 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,353 psi | 71% | 2549 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,572 psi | 75% | 2654 fps | 99.6% |
| Winchester StaBALL HD | 54.9 gr | 80% | 28,993 psi | 45% | 2408 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 34,635 psi | 54% | 2375 fps | 95.2% |
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 81 powders for 7 mm WSM loaded with the .284 | 173gr | Sellier & Bellot SPCE. Winchester StaBALL HD delivers the highest muzzle velocity at 2,920 fps; across all powders the maximum-charge window runs from 1,706 fps to 2,920 fps. ADI AR 2217 gives the best case fill at 100 %, and 81 of the 81 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 0.284" 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, IMR 7828 SSC, Vihtavuori N560 rank at the top here: for 7 mm WSM with the .284 | 173gr | Sellier & Bellot SPCE 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.