Load Specifications
Load data in caliber 7 mm WSM with .284 | 175gr | Sierra MatchKing bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Ramshot Grand and Alliant Reloder-26.
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% | 57,116 psi | 90% | 2746 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,897 psi | 86% | 2723 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 55,448 psi | 87% | 2838 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 82% | 56,304 psi | 88% | 2684 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,695 psi | 87% | 2782 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 96% | 57,101 psi | 89% | 2841 fps | 99.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,747 psi | 75% | 2687 fps | 98.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,322 psi | 66% | 2648 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,682 psi | 90% | 2703 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 55,753 psi | 87% | 2776 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 57,014 psi | 89% | 2789 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,158 psi | 86% | 2769 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 56,942 psi | 89% | 2838 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,201 psi | 85% | 2749 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,374 psi | 84% | 2808 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,578 psi | 86% | 2841 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 55,317 psi | 87% | 2746 fps | 96.5% |
| Bofors RP15 | <<locked>> | 98% | 55,811 psi | 87% | 2818 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,559 psi | 78% | 2756 fps | 98.7% |
| Bofors RP5 | <<locked>> | 96% | 56,942 psi | 89% | 2838 fps | 99.8% |
| Bofors RP7 | <<locked>> | 86% | 57,551 psi | 90% | 2723 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,504 psi | 82% | 2769 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 86% | 56,768 psi | 89% | 2779 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 55,811 psi | 87% | 2736 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 94% | 57,145 psi | 90% | 2782 fps | 98.7% |
| Hodgdon H4831 SC | <<locked>> | 94% | 55,985 psi | 88% | 2766 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,086 psi | 88% | 2700 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,315 psi | 82% | 2877 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 57,188 psi | 90% | 2818 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,999 psi | 58% | 1683 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,448 psi | 87% | 2713 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,550 psi | 87% | 2697 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 55,172 psi | 86% | 2717 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,650 psi | 86% | 2713 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 96% | 54,853 psi | 86% | 2818 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 56,028 psi | 88% | 2694 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 57,696 psi | 90% | 2740 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,549 psi | 85% | 2710 fps | 100% |
| Norma 204 | <<locked>> | 88% | 56,478 psi | 89% | 2769 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 38,000 psi | 60% | 2579 fps | 97.9% |
| Norma MRP | <<locked>> | 94% | 56,608 psi | 89% | 2854 fps | 100% |
| Norma URP | <<locked>> | 88% | 57,043 psi | 89% | 2759 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 55,521 psi | 87% | 2838 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 55,869 psi | 88% | 2766 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 53,461 psi | 84% | 2772 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,000 psi | 60% | 1729 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 56,449 psi | 88% | 2776 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,926 psi | 86% | 2746 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 56,840 psi | 89% | 2828 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,823 psi | 83% | 2874 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,805 psi | 75% | 2762 fps | 97% |
| Rottweil R 903 | <<locked>> | 82% | 55,201 psi | 87% | 2671 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,058 psi | 89% | 2753 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 92% | 54,491 psi | 85% | 2756 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 86% | 57,551 psi | 90% | 2723 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,028 psi | 88% | 2694 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 57,696 psi | 90% | 2740 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,840 psi | 89% | 2730 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,172 psi | 86% | 2546 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,230 psi | 87% | 2651 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,056 psi | 85% | 2753 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 55,085 psi | 86% | 2667 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,824 psi | 86% | 2694 fps | 98.3% |
| Somchem S365 | <<locked>> | 90% | 57,377 psi | 90% | 2759 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,027 psi | 86% | 2730 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 56,101 psi | 88% | 2638 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,230 psi | 87% | 2700 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,607 psi | 86% | 2713 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 54,346 psi | 85% | 2707 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 56,666 psi | 89% | 2779 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 56,463 psi | 88% | 2851 fps | 98.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,014 psi | 88% | 2828 fps | 99% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 48,936 psi | 77% | 2766 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,462 psi | 85% | 2661 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 56,768 psi | 89% | 2779 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 55,463 psi | 87% | 2884 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,027 psi | 86% | 2730 fps | 99.5% |
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% | 33,373 psi | 52% | 2333 fps | 97.5% |
| Accurate 4350 | <<locked>> | 80% | 44,831 psi | 70% | 2569 fps | 100% |
| Accurate MAGPRO | 59.2 gr | 86% | 41,916 psi | 66% | 2598 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 52,881 psi | 83% | 2635 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 37,376 psi | 59% | 2448 fps | 96.1% |
| ADI AR 2213 | <<locked>> | 86% | 40,756 psi | 64% | 2552 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 94% | 39,073 psi | 61% | 2513 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 90% | 30,821 psi | 48% | 2362 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,157 psi | 85% | 2657 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,062 psi | 67% | 2575 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,647 psi | 78% | 2687 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,434 psi | 59% | 2448 fps | 96.2% |
| Alliant Reloder-22 | <<locked>> | 82% | 35,636 psi | 56% | 2448 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,097 psi | 50% | 2359 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,963 psi | 44% | 2270 fps | 95.9% |
| Alliant Reloder-26 | 55.7 gr | 80% | 34,824 psi | 55% | 2490 fps | 99.2% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 51,967 psi | 81% | 2694 fps | 95.7% |
| Bofors RP15 | <<locked>> | 84% | 35,375 psi | 55% | 2441 fps | 95.5% |
| Bofors RP30 | <<locked>> | 92% | 37,811 psi | 59% | 2530 fps | 95.7% |
| Bofors RP5 | <<locked>> | 82% | 35,636 psi | 56% | 2448 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 47,819 psi | 75% | 2572 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 90% | 37,536 psi | 59% | 2480 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 46,557 psi | 73% | 2618 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 49,168 psi | 77% | 2631 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 40,828 psi | 64% | 2503 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 86% | 42,743 psi | 67% | 2543 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,538 psi | 64% | 2464 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 33,141 psi | 52% | 2457 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 45,934 psi | 72% | 2641 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,847 psi | 44% | 1506 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,120 psi | 68% | 2507 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,052 psi | 77% | 2595 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 42,786 psi | 67% | 2520 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 39,900 psi | 63% | 2448 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 86% | 39,276 psi | 62% | 2533 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 46,688 psi | 73% | 2549 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 45,049 psi | 71% | 2543 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 28,848 psi | 45% | 2218 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 43,033 psi | 67% | 2543 fps | 97.6% |
| Norma 217 | <<locked>> | 94% | 31,328 psi | 49% | 2411 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 34,780 psi | 55% | 2457 fps | 96.9% |
| Norma URP | <<locked>> | 80% | 44,164 psi | 69% | 2559 fps | 100% |
| Ramshot Grand | 57.6 gr | 86% | 38,682 psi | 61% | 2533 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 42,830 psi | 67% | 2556 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 32,140 psi | 50% | 2362 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,398 psi | 45% | 1542 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,736 psi | 83% | 2726 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,701 psi | 70% | 2589 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,917 psi | 67% | 2605 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,111 psi | 50% | 2431 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 41,263 psi | 65% | 2635 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 51,953 psi | 81% | 2625 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 38,899 psi | 61% | 2434 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 80% | 36,709 psi | 58% | 2431 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 80% | 47,819 psi | 75% | 2572 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,688 psi | 73% | 2549 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 45,049 psi | 71% | 2543 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,084 psi | 83% | 2677 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,996 psi | 81% | 2507 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,556 psi | 71% | 2500 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,390 psi | 57% | 2428 fps | 96% |
| Somchem S355 | <<locked>> | 80% | 51,706 psi | 81% | 2618 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 42,192 psi | 66% | 2477 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 40,915 psi | 64% | 2516 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,362 psi | 59% | 2421 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 80% | 49,574 psi | 78% | 2549 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,440 psi | 71% | 2552 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 32,285 psi | 51% | 2297 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 44,744 psi | 70% | 2552 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 35,984 psi | 56% | 2431 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 84% | 40,205 psi | 63% | 2562 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 90% | 40,132 psi | 63% | 2552 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 98% | 45,788 psi | 72% | 2707 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,512 psi | 70% | 2516 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,557 psi | 73% | 2618 fps | 99.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,427 psi | 45% | 2375 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 80% | 34,011 psi | 53% | 2346 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 | 175gr | Sierra MatchKing. Winchester StaBALL HD delivers the highest muzzle velocity at 2,884 fps; across all powders the maximum-charge window runs from 1,683 fps to 2,884 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 175.0 gr projectile in 0.284" calls for a 1:10.0 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. Accurate MAGPRO, Ramshot Grand, Alliant Reloder-26 rank at the top here: for 7 mm WSM with the .284 | 175gr | Sierra MatchKing 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.