Load Specifications
Load data in caliber 7 mm WSM with .284 | 150gr | Sierra MatchKing bullet and 83 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate MAGPRO 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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 56,884 psi | 89% | 2890 fps | 99.4% |
| Accurate 3100 | <<locked>> | 98% | 56,478 psi | 89% | 2949 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 56,913 psi | 89% | 2871 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,520 psi | 85% | 2936 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 54,723 psi | 86% | 3035 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 56,405 psi | 88% | 2904 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,187 psi | 86% | 2982 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 98% | 56,594 psi | 89% | 3041 fps | 98.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,131 psi | 61% | 2753 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,435 psi | 90% | 2923 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,624 psi | 90% | 2949 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,071 psi | 86% | 2992 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,594 psi | 89% | 3012 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,824 psi | 86% | 2972 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,115 psi | 88% | 3035 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,072 psi | 89% | 3012 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,327 psi | 77% | 2953 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 96% | 57,551 psi | 90% | 3107 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,984 psi | 86% | 3015 fps | 98.8% |
| Bofors RP3 | <<locked>> | 82% | 54,926 psi | 86% | 2890 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,295 psi | 71% | 2874 fps | 96.4% |
| Bofors RP5 | <<locked>> | 98% | 56,115 psi | 88% | 3035 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 57,653 psi | 90% | 2940 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,646 psi | 76% | 2894 fps | 97.3% |
| Hodgdon H380 | <<locked>> | 82% | 55,042 psi | 86% | 2907 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,275 psi | 88% | 2986 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 86% | 55,883 psi | 88% | 2946 fps | 99% |
| Hodgdon H4831 | <<locked>> | 96% | 56,869 psi | 89% | 2982 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,492 psi | 87% | 2959 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,695 psi | 87% | 2917 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,225 psi | 76% | 2999 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 88% | 56,884 psi | 89% | 3028 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,695 psi | 57% | 1831 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,912 psi | 88% | 2884 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,347 psi | 87% | 2920 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,550 psi | 87% | 2907 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 54,781 psi | 86% | 2927 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,433 psi | 85% | 2910 fps | 97.2% |
| IMR 7828 SSC | <<locked>> | 98% | 54,288 psi | 85% | 3015 fps | 97.8% |
| Lovex S062 | <<locked>> | 82% | 56,217 psi | 88% | 2877 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,057 psi | 88% | 2907 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 57,566 psi | 90% | 2953 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,401 psi | 79% | 2854 fps | 99.6% |
| Norma 203B | <<locked>> | 82% | 56,913 psi | 89% | 2933 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,159 psi | 88% | 2972 fps | 98.8% |
| Norma MRP | <<locked>> | 96% | 56,028 psi | 88% | 3064 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 56,666 psi | 89% | 2972 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,766 psi | 86% | 3031 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 55,376 psi | 87% | 2976 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,794 psi | 83% | 2966 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,565 psi | 59% | 1877 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,723 psi | 86% | 2894 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,086 psi | 88% | 3002 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,244 psi | 85% | 2956 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,376 psi | 88% | 3041 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,457 psi | 76% | 2995 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 84% | 54,998 psi | 86% | 2887 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,869 psi | 89% | 2956 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 96% | 57,725 psi | 90% | 3015 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 88% | 57,653 psi | 90% | 2940 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,057 psi | 88% | 2907 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,217 psi | 88% | 2877 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,566 psi | 90% | 2953 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,536 psi | 89% | 2946 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,637 psi | 87% | 2769 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,448 psi | 87% | 2858 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,261 psi | 90% | 3012 fps | 99.2% |
| Somchem S355 | <<locked>> | 84% | 54,882 psi | 86% | 2884 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,853 psi | 86% | 2890 fps | 97.1% |
| Somchem S365 | <<locked>> | 92% | 56,666 psi | 89% | 2976 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,824 psi | 86% | 2936 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 86% | 56,217 psi | 88% | 2858 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,071 psi | 86% | 2913 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,114 psi | 85% | 2910 fps | 99% |
| Vihtavuori N540 | <<locked>> | 82% | 56,840 psi | 89% | 2854 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,215 psi | 85% | 2920 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,927 psi | 88% | 2989 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,999 psi | 88% | 3054 fps | 97.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,605 psi | 81% | 2963 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,404 psi | 85% | 2874 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,536 psi | 89% | 2992 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,592 psi | 84% | 3091 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,665 psi | 86% | 2927 fps | 98.7% |
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 2700 | <<locked>> | 80% | 53,330 psi | 84% | 2831 fps | 99% |
| Accurate 3100 | <<locked>> | 82% | 32,808 psi | 51% | 2493 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 53,519 psi | 84% | 2822 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,365 psi | 65% | 2707 fps | 99.4% |
| Accurate MAGPRO | 66.6 gr | 92% | 47,732 psi | 75% | 2907 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 49,734 psi | 78% | 2799 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,842 psi | 62% | 2690 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 92% | 46,296 psi | 73% | 2854 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 96% | 34,490 psi | 54% | 2628 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,850 psi | 80% | 2825 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,969 psi | 85% | 2894 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,856 psi | 62% | 2713 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,687 psi | 72% | 2838 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,682 psi | 62% | 2684 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,030 psi | 63% | 2733 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,588 psi | 46% | 2470 fps | 98.1% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,372 psi | 49% | 2536 fps | 95.6% |
| Alliant Reloder-26 | 58.5 gr | 80% | 31,749 psi | 50% | 2589 fps | 96.7% |
| Bofors RP15 | <<locked>> | 90% | 39,711 psi | 62% | 2723 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 51,329 psi | 80% | 2838 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,279 psi | 66% | 2815 fps | 95.5% |
| Bofors RP5 | <<locked>> | 88% | 40,030 psi | 63% | 2733 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 44,773 psi | 70% | 2713 fps | 97.7% |
| Hodgdon H1000 | <<locked>> | 96% | 42,554 psi | 67% | 2769 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 51,503 psi | 81% | 2851 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,308 psi | 68% | 2756 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 45,905 psi | 72% | 2769 fps | 97.4% |
| Hodgdon H4831 | <<locked>> | 90% | 46,267 psi | 73% | 2799 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,602 psi | 76% | 2841 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,594 psi | 59% | 2602 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,610 psi | 62% | 2802 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 42,337 psi | 66% | 2772 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,412 psi | 43% | 1637 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,344 psi | 82% | 2831 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,321 psi | 63% | 2641 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,253 psi | 72% | 2746 fps | 98.4% |
| IMR 4831 | <<locked>> | 80% | 39,653 psi | 62% | 2657 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,252 psi | 71% | 2743 fps | 95% |
| IMR 7828 SSC | <<locked>> | 92% | 44,367 psi | 70% | 2828 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 52,924 psi | 83% | 2828 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,859 psi | 69% | 2694 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 41,959 psi | 66% | 2677 fps | 97.8% |
| Lovex S071 | <<locked>> | 86% | 31,995 psi | 50% | 2474 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 53,330 psi | 84% | 2881 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,001 psi | 63% | 2671 fps | 95.1% |
| Norma MRP | 59.6 gr | 84% | 36,608 psi | 57% | 2684 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 40,828 psi | 64% | 2694 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 44,164 psi | 69% | 2835 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 39,697 psi | 62% | 2684 fps | 97.8% |
| Ramshot Magnum | <<locked>> | 90% | 36,550 psi | 57% | 2641 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,065 psi | 44% | 1677 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,314 psi | 80% | 2838 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,472 psi | 76% | 2887 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,147 psi | 64% | 2723 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,740 psi | 62% | 2736 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,579 psi | 57% | 2720 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 48,298 psi | 76% | 2782 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,005 psi | 69% | 2726 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 84% | 38,769 psi | 61% | 2664 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 44,773 psi | 70% | 2713 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,859 psi | 69% | 2694 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 52,924 psi | 83% | 2828 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,959 psi | 66% | 2677 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,588 psi | 78% | 2841 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,124 psi | 77% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,902 psi | 67% | 2638 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,421 psi | 60% | 2657 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 48,588 psi | 76% | 2785 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,066 psi | 75% | 2772 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 37,492 psi | 59% | 2651 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,941 psi | 58% | 2592 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 46,238 psi | 72% | 2703 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,235 psi | 66% | 2694 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 88% | 38,928 psi | 61% | 2628 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 53,316 psi | 84% | 2805 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,698 psi | 65% | 2694 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 80% | 32,996 psi | 52% | 2549 fps | 98.1% |
| Vihtavuori N560 | <<locked>> | 90% | 45,484 psi | 71% | 2861 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 96% | 45,005 psi | 71% | 2841 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,350 psi | 65% | 2661 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,308 psi | 68% | 2756 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,121 psi | 41% | 2454 fps | 97.4% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,553 psi | 65% | 2690 fps | 95.9% |
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 83 powders for 7 mm WSM loaded with the .284 | 150gr | Sierra MatchKing. Alliant Reloder-26 delivers the highest muzzle velocity at 3,107 fps; across all powders the maximum-charge window runs from 1,831 fps to 3,107 fps. ADI AR 2225 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, 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. Alliant Reloder-26, Accurate MAGPRO, Norma MRP rank at the top here: for 7 mm WSM with the .284 | 150gr | 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.