Load Specifications
Load data in caliber 7 mm WSM with .284 | 170gr | Norma VULKAN 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 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% | 54,404 psi | 85% | 2753 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,883 psi | 88% | 2782 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 56,753 psi | 89% | 2904 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 82% | 56,927 psi | 89% | 2740 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,536 psi | 89% | 2841 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 54,288 psi | 85% | 2844 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,588 psi | 76% | 2746 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,279 psi | 68% | 2710 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 56,913 psi | 89% | 2838 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,695 psi | 89% | 2835 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,027 psi | 85% | 2795 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,202 psi | 88% | 2831 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,244 psi | 85% | 2841 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,564 psi | 87% | 2815 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,665 psi | 86% | 2871 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,738 psi | 87% | 2904 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,159 psi | 88% | 2808 fps | 96.6% |
| Bofors RP15 | <<locked>> | 98% | 56,956 psi | 89% | 2881 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,778 psi | 80% | 2818 fps | 98.8% |
| Bofors RP5 | <<locked>> | 94% | 54,244 psi | 85% | 2841 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 54,708 psi | 86% | 2730 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,577 psi | 84% | 2831 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 86% | 57,522 psi | 90% | 2838 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 56,623 psi | 89% | 2795 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 54,172 psi | 85% | 2782 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,898 psi | 89% | 2825 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,913 psi | 89% | 2759 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,490 psi | 84% | 2943 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 54,027 psi | 85% | 2818 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,115 psi | 58% | 1726 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,173 psi | 88% | 2769 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,217 psi | 88% | 2753 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 56,275 psi | 88% | 2776 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,332 psi | 87% | 2769 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 96% | 55,709 psi | 87% | 2881 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 56,927 psi | 89% | 2753 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,027 psi | 86% | 2749 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,506 psi | 87% | 2769 fps | 100% |
| Norma 204 | <<locked>> | 88% | 57,305 psi | 90% | 2828 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 38,870 psi | 61% | 2635 fps | 98% |
| Norma MRP | <<locked>> | 92% | 54,143 psi | 85% | 2864 fps | 100% |
| Norma URP | <<locked>> | 86% | 54,389 psi | 85% | 2769 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,594 psi | 89% | 2900 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 56,710 psi | 89% | 2825 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,882 psi | 86% | 2838 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,855 psi | 59% | 1765 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 57,537 psi | 90% | 2835 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,869 psi | 88% | 2808 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,085 psi | 85% | 2835 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,172 psi | 85% | 2940 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,037 psi | 77% | 2825 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 82% | 56,028 psi | 88% | 2730 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,404 psi | 85% | 2759 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 92% | 55,637 psi | 87% | 2818 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 54,708 psi | 86% | 2730 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,927 psi | 89% | 2753 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,027 psi | 86% | 2749 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,493 psi | 90% | 2785 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,883 psi | 88% | 2602 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,927 psi | 88% | 2707 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,201 psi | 87% | 2815 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 55,680 psi | 87% | 2723 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,796 psi | 87% | 2753 fps | 98.4% |
| Somchem S365 | <<locked>> | 88% | 54,563 psi | 86% | 2769 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,999 psi | 88% | 2789 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 57,072 psi | 89% | 2697 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,072 psi | 88% | 2756 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,680 psi | 87% | 2772 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 55,347 psi | 87% | 2766 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,375 psi | 85% | 2792 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,041 psi | 85% | 2858 fps | 98.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 57,406 psi | 90% | 2894 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,140 psi | 79% | 2828 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,477 psi | 87% | 2717 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,056 psi | 85% | 2785 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 57,101 psi | 89% | 2949 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,130 psi | 88% | 2792 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% | 34,084 psi | 53% | 2385 fps | 97.6% |
| Accurate 4350 | <<locked>> | 80% | 45,701 psi | 72% | 2625 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 42,917 psi | 67% | 2661 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 53,563 psi | 84% | 2690 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,116 psi | 60% | 2507 fps | 96.2% |
| ADI AR 2213 | <<locked>> | 84% | 38,856 psi | 61% | 2549 fps | 95% |
| ADI AR 2217 | <<locked>> | 94% | 39,827 psi | 62% | 2572 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 90% | 31,372 psi | 49% | 2415 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,493 psi | 60% | 2510 fps | 96.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,801 psi | 69% | 2631 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,386 psi | 79% | 2743 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,145 psi | 60% | 2503 fps | 96.3% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,245 psi | 57% | 2500 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,677 psi | 51% | 2411 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,543 psi | 45% | 2323 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,578 psi | 56% | 2543 fps | 99.2% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 49,574 psi | 78% | 2694 fps | 95% |
| Bofors RP15 | <<locked>> | 84% | 36,172 psi | 57% | 2497 fps | 95.6% |
| Bofors RP30 | <<locked>> | 92% | 38,682 psi | 61% | 2585 fps | 95.9% |
| Bofors RP5 | <<locked>> | 82% | 36,245 psi | 57% | 2500 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 48,399 psi | 76% | 2628 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 90% | 38,174 psi | 60% | 2536 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 47,297 psi | 74% | 2674 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 49,893 psi | 78% | 2687 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 41,539 psi | 65% | 2559 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 84% | 40,712 psi | 64% | 2539 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,234 psi | 65% | 2516 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 33,736 psi | 53% | 2510 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 46,615 psi | 73% | 2697 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,891 psi | 44% | 1542 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,845 psi | 69% | 2562 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,617 psi | 78% | 2651 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 43,381 psi | 68% | 2572 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 40,480 psi | 63% | 2500 fps | 95.2% |
| IMR 7828 SSC | 58.2 gr | 86% | 39,943 psi | 63% | 2589 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 47,282 psi | 74% | 2605 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 45,643 psi | 72% | 2595 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 29,472 psi | 46% | 2270 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 43,700 psi | 68% | 2598 fps | 97.7% |
| Norma 217 | <<locked>> | 94% | 31,879 psi | 50% | 2461 fps | 95.2% |
| Norma MRP | 56.2 gr | 80% | 35,389 psi | 55% | 2507 fps | 97% |
| Norma URP | <<locked>> | 80% | 44,802 psi | 70% | 2615 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 39,479 psi | 62% | 2592 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 43,526 psi | 68% | 2608 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 32,808 psi | 51% | 2415 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,427 psi | 45% | 1578 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 53,592 psi | 84% | 2782 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,600 psi | 71% | 2648 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,729 psi | 69% | 2664 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,808 psi | 51% | 2487 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,119 psi | 66% | 2694 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 52,663 psi | 83% | 2680 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 39,436 psi | 62% | 2487 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 37,478 psi | 59% | 2487 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 80% | 48,399 psi | 76% | 2628 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,282 psi | 74% | 2605 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 45,643 psi | 72% | 2595 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,853 psi | 84% | 2736 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,779 psi | 83% | 2562 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,267 psi | 73% | 2556 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,144 psi | 58% | 2484 fps | 96.2% |
| Somchem S355 | <<locked>> | 80% | 52,373 psi | 82% | 2674 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 42,786 psi | 67% | 2530 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 41,800 psi | 66% | 2572 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,072 psi | 60% | 2474 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 80% | 50,169 psi | 79% | 2602 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,253 psi | 72% | 2608 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 32,909 psi | 52% | 2349 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 45,672 psi | 72% | 2615 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,651 psi | 57% | 2484 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 84% | 40,886 psi | 64% | 2615 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 90% | 41,017 psi | 64% | 2608 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 96% | 43,642 psi | 68% | 2707 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,223 psi | 71% | 2569 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,297 psi | 74% | 2674 fps | 99.5% |
| Winchester StaBALL HD | 55.6 gr | 80% | 28,964 psi | 45% | 2428 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 80% | 34,606 psi | 54% | 2398 fps | 95% |
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 | 170gr | Norma VULKAN. Winchester StaBALL HD delivers the highest muzzle velocity at 2,949 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,949 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 170.0 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, IMR 7828 SSC, Norma MRP rank at the top here: for 7 mm WSM with the .284 | 170gr | Norma VULKAN 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.