Load Specifications
Load data in caliber 7 mm WSM with .284 | 150gr | Sierra GameKing bullet and 83 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Alliant Reloder-26 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% | 57,246 psi | 90% | 2897 fps | 99.4% |
| Accurate 3100 | <<locked>> | 98% | 56,826 psi | 89% | 2953 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 57,029 psi | 89% | 2871 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,636 psi | 86% | 2940 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 55,027 psi | 86% | 3041 fps | 97% |
| ADI AR 2208 | <<locked>> | 84% | 56,492 psi | 89% | 2907 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,535 psi | 87% | 2989 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 98% | 56,913 psi | 89% | 3048 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,363 psi | 62% | 2759 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,201 psi | 85% | 2877 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,725 psi | 90% | 2949 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,463 psi | 87% | 2999 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,956 psi | 89% | 3018 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,897 psi | 86% | 2976 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,449 psi | 88% | 3041 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,435 psi | 90% | 3018 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,617 psi | 78% | 2959 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,882 psi | 84% | 3051 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,317 psi | 87% | 3022 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 55,288 psi | 87% | 2897 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,382 psi | 71% | 2877 fps | 96.5% |
| Bofors RP5 | <<locked>> | 98% | 56,449 psi | 88% | 3041 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 57,725 psi | 90% | 2940 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,907 psi | 77% | 2900 fps | 97.4% |
| Hodgdon H380 | <<locked>> | 82% | 55,390 psi | 87% | 2917 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,623 psi | 89% | 2992 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 55,941 psi | 88% | 2949 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 96% | 57,188 psi | 90% | 2989 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,825 psi | 87% | 2969 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,767 psi | 87% | 2917 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,472 psi | 76% | 3005 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 88% | 57,232 psi | 90% | 3035 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,709 psi | 58% | 1834 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,014 psi | 88% | 2887 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,651 psi | 87% | 2923 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,898 psi | 88% | 2913 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 55,114 psi | 86% | 2933 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,737 psi | 86% | 2917 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 98% | 54,578 psi | 86% | 3022 fps | 97.9% |
| Lovex S062 | <<locked>> | 82% | 56,347 psi | 88% | 2881 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,159 psi | 88% | 2910 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 57,653 psi | 90% | 2956 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,430 psi | 79% | 2854 fps | 99.6% |
| Norma 203B | <<locked>> | 82% | 57,014 psi | 89% | 2936 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,449 psi | 88% | 2979 fps | 98.8% |
| Norma MRP | <<locked>> | 96% | 56,362 psi | 88% | 3071 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 56,768 psi | 89% | 2976 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,071 psi | 86% | 3038 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 55,666 psi | 87% | 2979 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,055 psi | 83% | 2969 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,579 psi | 59% | 1880 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,056 psi | 86% | 2900 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,173 psi | 88% | 3002 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,592 psi | 86% | 2963 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,739 psi | 89% | 3048 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,689 psi | 76% | 3002 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 84% | 55,419 psi | 87% | 2894 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,927 psi | 89% | 2956 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 94% | 54,491 psi | 85% | 2966 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 88% | 57,725 psi | 90% | 2940 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,159 psi | 88% | 2910 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,347 psi | 88% | 2881 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,653 psi | 90% | 2956 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,913 psi | 89% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,724 psi | 87% | 2769 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,753 psi | 87% | 2864 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,551 psi | 90% | 3018 fps | 99.2% |
| Somchem S355 | <<locked>> | 84% | 55,230 psi | 87% | 2890 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,143 psi | 86% | 2894 fps | 97.2% |
| Somchem S365 | <<locked>> | 92% | 56,768 psi | 89% | 2979 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,882 psi | 86% | 2936 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 86% | 56,304 psi | 88% | 2858 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,114 psi | 86% | 2917 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,418 psi | 85% | 2917 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 57,159 psi | 90% | 2861 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,520 psi | 85% | 2923 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,014 psi | 88% | 2992 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,318 psi | 88% | 3061 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,895 psi | 81% | 2969 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,708 psi | 86% | 2877 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,855 psi | 89% | 2995 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,027 psi | 85% | 3097 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,940 psi | 86% | 2933 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% | 53,693 psi | 84% | 2841 fps | 99.1% |
| Accurate 3100 | <<locked>> | 82% | 32,924 psi | 52% | 2497 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 53,650 psi | 84% | 2825 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,698 psi | 65% | 2713 fps | 99.5% |
| Accurate MAGPRO | 66.8 gr | 92% | 47,790 psi | 75% | 2910 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 50,082 psi | 78% | 2805 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,958 psi | 63% | 2694 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 92% | 46,601 psi | 73% | 2861 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 96% | 34,708 psi | 54% | 2635 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,981 psi | 80% | 2828 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 54,331 psi | 85% | 2900 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,176 psi | 63% | 2720 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,050 psi | 72% | 2844 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,798 psi | 62% | 2687 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,335 psi | 63% | 2740 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,689 psi | 47% | 2477 fps | 98.1% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,604 psi | 50% | 2546 fps | 95.8% |
| Alliant Reloder-26 | 58.8 gr | 80% | 31,995 psi | 50% | 2595 fps | 96.9% |
| Bofors RP15 | <<locked>> | 90% | 39,798 psi | 62% | 2726 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 51,706 psi | 81% | 2844 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,540 psi | 67% | 2818 fps | 95.6% |
| Bofors RP5 | <<locked>> | 88% | 40,335 psi | 63% | 2740 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 45,092 psi | 71% | 2720 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 96% | 42,815 psi | 67% | 2776 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 51,880 psi | 81% | 2861 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,395 psi | 68% | 2759 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 46,209 psi | 72% | 2779 fps | 97.5% |
| Hodgdon H4831 | <<locked>> | 90% | 46,586 psi | 73% | 2808 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,892 psi | 77% | 2851 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,710 psi | 59% | 2605 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,885 psi | 63% | 2808 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 42,438 psi | 67% | 2772 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,470 psi | 43% | 1637 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,707 psi | 83% | 2838 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,611 psi | 64% | 2648 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,311 psi | 73% | 2749 fps | 98.4% |
| IMR 4831 | <<locked>> | 80% | 39,784 psi | 62% | 2657 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,310 psi | 71% | 2746 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 92% | 44,628 psi | 70% | 2835 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 53,011 psi | 83% | 2831 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,961 psi | 69% | 2697 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 42,279 psi | 66% | 2684 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 32,285 psi | 51% | 2484 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 53,708 psi | 84% | 2887 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,321 psi | 63% | 2677 fps | 95.3% |
| Norma MRP | 59.9 gr | 84% | 36,854 psi | 58% | 2690 fps | 96% |
| Norma URP | <<locked>> | 80% | 41,118 psi | 64% | 2700 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 44,469 psi | 70% | 2844 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 39,987 psi | 63% | 2694 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 90% | 36,811 psi | 58% | 2651 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,108 psi | 44% | 1680 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,619 psi | 81% | 2841 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,878 psi | 77% | 2894 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,481 psi | 65% | 2730 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,798 psi | 62% | 2740 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,796 psi | 58% | 2726 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 48,675 psi | 76% | 2789 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,063 psi | 69% | 2730 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 84% | 39,059 psi | 61% | 2671 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 45,092 psi | 71% | 2720 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,961 psi | 69% | 2697 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 53,011 psi | 83% | 2831 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,279 psi | 66% | 2684 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,966 psi | 78% | 2844 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,240 psi | 77% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,018 psi | 67% | 2641 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,696 psi | 61% | 2664 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 48,704 psi | 76% | 2785 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,327 psi | 76% | 2779 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 37,826 psi | 59% | 2661 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,217 psi | 58% | 2598 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 46,586 psi | 73% | 2710 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,569 psi | 67% | 2700 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 88% | 39,015 psi | 61% | 2635 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 53,635 psi | 84% | 2812 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,003 psi | 66% | 2703 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 33,112 psi | 52% | 2552 fps | 98.1% |
| Vihtavuori N560 | <<locked>> | 90% | 45,745 psi | 72% | 2867 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 96% | 45,295 psi | 71% | 2844 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,452 psi | 65% | 2661 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,613 psi | 68% | 2762 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,324 psi | 41% | 2461 fps | 97.6% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,827 psi | 61% | 2635 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 83 powders for 7 mm WSM loaded with the .284 | 150gr | Sierra GameKing. Winchester StaBALL HD delivers the highest muzzle velocity at 3,097 fps; across all powders the maximum-charge window runs from 1,834 fps to 3,097 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 58–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:12.0 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. Accurate MAGPRO, Alliant Reloder-26, Norma MRP rank at the top here: for 7 mm WSM with the .284 | 150gr | Sierra GameKing 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.