Load Specifications
Load data in caliber 7 mm WSM with .284 | 145gr | Speer Grand Slam bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 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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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% | 56,420 psi | 88% | 2930 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 55,767 psi | 87% | 2982 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 56,217 psi | 88% | 2910 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 57,638 psi | 90% | 3031 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 54,143 psi | 85% | 3068 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 56,028 psi | 88% | 2946 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,636 psi | 86% | 3022 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 56,159 psi | 88% | 3077 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,754 psi | 61% | 2779 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,956 psi | 89% | 2966 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,145 psi | 90% | 2992 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,694 psi | 86% | 3035 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,043 psi | 88% | 3054 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,273 psi | 85% | 3009 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 55,637 psi | 87% | 3074 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 56,275 psi | 88% | 3051 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,660 psi | 76% | 2986 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 56,811 psi | 89% | 3143 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,520 psi | 85% | 3054 fps | 98.6% |
| Bofors RP3 | <<locked>> | 82% | 54,389 psi | 85% | 2933 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 55,637 psi | 87% | 3074 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 57,116 psi | 90% | 2976 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,196 psi | 76% | 2927 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 82% | 54,549 psi | 85% | 2949 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,811 psi | 87% | 3028 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 55,259 psi | 87% | 2986 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 56,173 psi | 88% | 3018 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,114 psi | 86% | 2999 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,969 psi | 86% | 2953 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,747 psi | 75% | 3031 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 88% | 56,144 psi | 88% | 3064 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,724 psi | 58% | 1867 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,303 psi | 87% | 2927 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,624 psi | 90% | 2963 fps | 99.7% |
| IMR 4350 | <<locked>> | 90% | 54,940 psi | 86% | 2959 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,056 psi | 86% | 2946 fps | 99.4% |
| IMR 4831 | <<locked>> | 90% | 54,331 psi | 85% | 2966 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 57,508 psi | 90% | 3002 fps | 97.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 57,363 psi | 90% | 3114 fps | 98.1% |
| Lovex S062 | <<locked>> | 82% | 55,579 psi | 87% | 2917 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,521 psi | 87% | 2946 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 56,913 psi | 89% | 2989 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,792 psi | 78% | 2887 fps | 99.5% |
| Norma 203B | <<locked>> | 82% | 56,492 psi | 89% | 2976 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,579 psi | 87% | 3012 fps | 98.5% |
| Norma MRP | <<locked>> | 96% | 55,201 psi | 87% | 3097 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 55,999 psi | 88% | 3012 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,479 psi | 90% | 3002 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,143 psi | 85% | 3068 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 90% | 54,781 psi | 86% | 3012 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,373 psi | 82% | 3005 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,347 psi | 59% | 1909 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,462 psi | 85% | 2936 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,317 psi | 87% | 3041 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 57,638 psi | 90% | 3054 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,999 psi | 88% | 3084 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,008 psi | 75% | 3028 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 82% | 57,435 psi | 90% | 2927 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 54,520 psi | 85% | 2930 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,376 psi | 88% | 2992 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 96% | 57,363 psi | 90% | 3058 fps | 99% |
| Rottweil R 907 | <<locked>> | 88% | 57,116 psi | 90% | 2976 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,521 psi | 87% | 2946 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 55,579 psi | 87% | 2917 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,913 psi | 89% | 2989 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,231 psi | 88% | 2992 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,013 psi | 86% | 2808 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,085 psi | 86% | 2900 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,884 psi | 89% | 3051 fps | 98.9% |
| Somchem S355 | <<locked>> | 84% | 54,404 psi | 85% | 2923 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,288 psi | 85% | 2923 fps | 96.7% |
| Somchem S365 | <<locked>> | 92% | 55,811 psi | 87% | 3015 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,215 psi | 85% | 2969 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 86% | 55,666 psi | 87% | 2897 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,404 psi | 85% | 2949 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 57,145 psi | 90% | 3002 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 82% | 56,376 psi | 88% | 2897 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 57,363 psi | 90% | 3012 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,274 psi | 87% | 3028 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,216 psi | 87% | 3087 fps | 97.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,024 psi | 80% | 2995 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,711 psi | 90% | 2966 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,043 psi | 88% | 3031 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,808 psi | 83% | 3130 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,201 psi | 85% | 2966 fps | 98.4% |
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% | 52,895 psi | 83% | 2871 fps | 98.8% |
| Accurate 3100 | <<locked>> | 82% | 32,445 psi | 51% | 2523 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 52,939 psi | 83% | 2861 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,959 psi | 64% | 2740 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 94% | 50,604 psi | 79% | 3005 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 49,458 psi | 78% | 2841 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 41,974 psi | 66% | 2779 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 92% | 45,847 psi | 72% | 2887 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 98% | 36,347 psi | 57% | 2717 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,270 psi | 79% | 2864 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,606 psi | 84% | 2936 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,552 psi | 62% | 2749 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,165 psi | 71% | 2877 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,756 psi | 65% | 2772 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,697 psi | 62% | 2766 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,182 psi | 46% | 2497 fps | 97.6% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,009 psi | 49% | 2562 fps | 95% |
| Alliant Reloder-26 | 59.4 gr | 80% | 31,343 psi | 49% | 2612 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 41,858 psi | 66% | 2812 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 50,908 psi | 80% | 2877 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 39,697 psi | 62% | 2766 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 44,483 psi | 70% | 2749 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 98% | 45,005 psi | 71% | 2861 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 51,111 psi | 80% | 2894 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 42,685 psi | 67% | 2785 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 45,542 psi | 71% | 2808 fps | 97% |
| Hodgdon H4831 | <<locked>> | 92% | 49,066 psi | 77% | 2894 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,124 psi | 75% | 2877 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,101 psi | 58% | 2635 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,160 psi | 61% | 2828 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 41,756 psi | 65% | 2799 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,383 psi | 43% | 1667 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,040 psi | 82% | 2874 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 54,070 psi | 85% | 2904 fps | 99.4% |
| IMR 4350 | <<locked>> | 80% | 40,001 psi | 63% | 2677 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,730 psi | 72% | 2779 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 39,102 psi | 61% | 2687 fps | 98.9% |
| IMR 4955 Enduron | <<locked>> | 90% | 47,718 psi | 75% | 2831 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 94% | 46,992 psi | 74% | 2923 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 52,330 psi | 82% | 2867 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,366 psi | 68% | 2730 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 41,655 psi | 65% | 2713 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 33,765 psi | 53% | 2556 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 52,939 psi | 83% | 2923 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,380 psi | 66% | 2762 fps | 95.6% |
| Norma MRP | 60.6 gr | 84% | 36,289 psi | 57% | 2713 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 40,480 psi | 63% | 2730 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 53,664 psi | 84% | 2946 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 43,671 psi | 68% | 2864 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 39,291 psi | 62% | 2720 fps | 97.5% |
| Ramshot Magnum | <<locked>> | 92% | 38,885 psi | 61% | 2736 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,021 psi | 44% | 1709 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,894 psi | 80% | 2874 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,921 psi | 75% | 2927 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,683 psi | 64% | 2756 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,276 psi | 62% | 2766 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,071 psi | 57% | 2743 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 54,085 psi | 85% | 2877 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,964 psi | 75% | 2825 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,514 psi | 73% | 2818 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 86% | 41,060 psi | 64% | 2756 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 44,483 psi | 70% | 2749 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,366 psi | 68% | 2730 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 52,330 psi | 82% | 2867 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,655 psi | 65% | 2713 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,153 psi | 77% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,675 psi | 76% | 2717 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,409 psi | 66% | 2674 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 40,683 psi | 64% | 2749 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 48,022 psi | 75% | 2818 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,601 psi | 75% | 2805 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 37,086 psi | 58% | 2687 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 39,059 psi | 61% | 2680 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 45,905 psi | 72% | 2746 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,858 psi | 66% | 2730 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 38,406 psi | 60% | 2657 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 52,924 psi | 83% | 2844 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,321 psi | 65% | 2730 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 32,474 psi | 51% | 2575 fps | 97.6% |
| Vihtavuori N560 | 66.4 gr | 92% | 48,269 psi | 76% | 2959 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 98% | 47,645 psi | 75% | 2933 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,901 psi | 64% | 2694 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,873 psi | 67% | 2789 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,831 psi | 40% | 2474 fps | 96.7% |
| Winchester Supreme 780 | <<locked>> | 88% | 40,973 psi | 64% | 2720 fps | 95.3% |
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 91 powders for 7 mm WSM loaded with the .284 | 145gr | Speer Grand Slam. Alliant Reloder-26 delivers the highest muzzle velocity at 3,143 fps; across all powders the maximum-charge window runs from 1,867 fps to 3,143 fps. ADI AR 2217 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.284" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-23 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for 7 mm WSM with the .284 | 145gr | Speer Grand Slam they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 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.