Load Specifications
Load data in caliber 7 mm WSM with .284 | 140gr | Sellier & Bellot FMJ bullet and 86 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Vihtavuori N560.
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% | 54,897 psi | 86% | 2946 fps | 98.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,682 psi | 90% | 3058 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 54,737 psi | 86% | 2936 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,709 psi | 87% | 3048 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 55,883 psi | 88% | 3143 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 84% | 54,505 psi | 85% | 2969 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,666 psi | 89% | 3097 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 54,128 psi | 85% | 3084 fps | 96.9% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 56,666 psi | 89% | 3087 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,317 psi | 87% | 2989 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,521 psi | 87% | 3012 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,304 psi | 88% | 3107 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,809 psi | 84% | 3071 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,883 psi | 88% | 3081 fps | 98.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,159 psi | 90% | 3143 fps | 98.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,230 psi | 85% | 3068 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,949 psi | 74% | 2995 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,462 psi | 85% | 3159 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,344 psi | 82% | 3061 fps | 97.8% |
| Bofors RP3 | <<locked>> | 84% | 56,318 psi | 88% | 3009 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,159 psi | 90% | 3143 fps | 98.7% |
| Bofors RP7 | <<locked>> | 88% | 55,506 psi | 87% | 2992 fps | 99% |
| Hodgdon H380 | <<locked>> | 84% | 56,536 psi | 89% | 3025 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 57,711 psi | 90% | 3100 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 88% | 57,246 psi | 90% | 3061 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 54,418 psi | 85% | 3028 fps | 96.3% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,898 psi | 89% | 3071 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,608 psi | 89% | 3025 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,861 psi | 72% | 3028 fps | 97.3% |
| Hodgdon Superformance | <<locked>> | 88% | 54,244 psi | 85% | 3077 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,637 psi | 57% | 1896 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,377 psi | 90% | 3002 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,144 psi | 88% | 2982 fps | 99.4% |
| IMR 4350 | <<locked>> | 92% | 56,623 psi | 89% | 3028 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,116 psi | 90% | 3022 fps | 99.4% |
| IMR 4831 | <<locked>> | 92% | 56,159 psi | 88% | 3038 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,971 psi | 89% | 3041 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,956 psi | 88% | 3018 fps | 96.8% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,492 psi | 87% | 3120 fps | 97.3% |
| Lovex S062 | <<locked>> | 84% | 57,638 psi | 90% | 2992 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,246 psi | 90% | 3018 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 55,288 psi | 87% | 3009 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,761 psi | 75% | 2897 fps | 99% |
| Norma 203B | <<locked>> | 82% | 54,839 psi | 86% | 2999 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,609 psi | 90% | 3084 fps | 98.5% |
| Norma MRP | <<locked>> | 98% | 56,956 psi | 89% | 3173 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 54,201 psi | 85% | 3031 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,753 psi | 87% | 3028 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,130 psi | 88% | 3143 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 92% | 56,652 psi | 89% | 3087 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,227 psi | 79% | 3005 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,246 psi | 58% | 1939 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,449 psi | 88% | 3012 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,159 psi | 90% | 3117 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,695 psi | 87% | 3071 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,853 psi | 84% | 3097 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,137 psi | 72% | 3028 fps | 98.4% |
| Rottweil R 902 | <<locked>> | 82% | 56,144 psi | 88% | 2956 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,434 psi | 88% | 3005 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,476 psi | 85% | 3005 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 96% | 55,172 psi | 86% | 3064 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 55,506 psi | 87% | 2992 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,246 psi | 90% | 3018 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 57,638 psi | 90% | 2992 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,288 psi | 87% | 3009 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,273 psi | 85% | 3009 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,971 psi | 89% | 2881 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,985 psi | 89% | 2969 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,694 psi | 86% | 3061 fps | 98.3% |
| Somchem S355 | <<locked>> | 86% | 56,362 psi | 88% | 3002 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,434 psi | 88% | 2999 fps | 96.7% |
| Somchem S365 | <<locked>> | 94% | 57,638 psi | 90% | 3087 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,796 psi | 87% | 3041 fps | 99% |
| Vihtavuori N135 | <<locked>> | 82% | 56,434 psi | 88% | 2910 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,724 psi | 89% | 2927 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,740 psi | 90% | 2972 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,333 psi | 88% | 3025 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,317 psi | 87% | 3015 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 82% | 54,839 psi | 86% | 2920 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,317 psi | 87% | 3028 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,753 psi | 89% | 3097 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 57,029 psi | 89% | 3159 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,956 psi | 88% | 2989 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,288 psi | 85% | 3045 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,850 psi | 78% | 3140 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,941 psi | 88% | 3035 fps | 98.3% |
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% | 51,445 psi | 81% | 2887 fps | 98.2% |
| Accurate 3100 | <<locked>> | 84% | 33,402 psi | 52% | 2589 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 51,271 psi | 80% | 2884 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,465 psi | 62% | 2749 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 96% | 52,156 psi | 82% | 3077 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 48,095 psi | 75% | 2858 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 43,453 psi | 68% | 2848 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 94% | 47,268 psi | 74% | 2953 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 43,627 psi | 68% | 2848 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,776 psi | 76% | 2884 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,011 psi | 82% | 2956 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,232 psi | 60% | 2759 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,526 psi | 68% | 2890 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 43,149 psi | 68% | 2841 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,930 psi | 64% | 2835 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,094 psi | 44% | 2500 fps | 96.6% |
| Alliant Reloder-25 | <<locked>> | 90% | 34,069 psi | 53% | 2687 fps | 96% |
| Alliant Reloder-26 | 60.6 gr | 82% | 32,358 psi | 51% | 2680 fps | 96.1% |
| Bofors RP15 | <<locked>> | 94% | 42,960 psi | 67% | 2881 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 49,327 psi | 77% | 2897 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,930 psi | 64% | 2835 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 43,192 psi | 68% | 2766 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 49,574 psi | 78% | 2910 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 41,220 psi | 65% | 2795 fps | 96.7% |
| Hodgdon H4350 | <<locked>> | 80% | 44,135 psi | 69% | 2818 fps | 96.2% |
| Hodgdon H4831 | <<locked>> | 94% | 50,807 psi | 80% | 2966 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,632 psi | 78% | 2943 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,737 psi | 56% | 2644 fps | 99.1% |
| Hodgdon Retumbo | <<locked>> | 96% | 40,393 psi | 63% | 2897 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 40,350 psi | 63% | 2808 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,267 psi | 43% | 1693 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,604 psi | 79% | 2897 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,910 psi | 83% | 2927 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 38,754 psi | 61% | 2687 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,657 psi | 70% | 2799 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 37,927 psi | 59% | 2700 fps | 98.3% |
| IMR 4895 | <<locked>> | 80% | 53,359 psi | 84% | 2986 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 49,182 psi | 77% | 2900 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 96% | 48,385 psi | 76% | 2989 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 50,850 psi | 80% | 2890 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,090 psi | 66% | 2743 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 40,350 psi | 63% | 2723 fps | 96.7% |
| Lovex S071 | <<locked>> | 90% | 34,606 psi | 54% | 2618 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 51,416 psi | 81% | 2943 fps | 100% |
| Norma 204 | <<locked>> | 84% | 43,830 psi | 69% | 2835 fps | 95.5% |
| Norma MRP | 61.7 gr | 86% | 37,347 psi | 59% | 2779 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 39,044 psi | 61% | 2743 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 52,011 psi | 82% | 2966 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 45,179 psi | 71% | 2936 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 37,927 psi | 59% | 2726 fps | 96.6% |
| Ramshot Magnum | <<locked>> | 94% | 40,176 psi | 63% | 2805 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,876 psi | 44% | 1736 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,429 psi | 77% | 2890 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,209 psi | 72% | 2946 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,160 psi | 61% | 2766 fps | 98.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,942 psi | 59% | 2772 fps | 97.8% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 37,362 psi | 59% | 2812 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 52,605 psi | 82% | 2900 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,383 psi | 73% | 2841 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 47,935 psi | 75% | 2887 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 88% | 42,409 psi | 66% | 2825 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 43,192 psi | 68% | 2766 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,090 psi | 66% | 2743 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 50,850 psi | 80% | 2890 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,350 psi | 63% | 2723 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,601 psi | 75% | 2897 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,340 psi | 74% | 2740 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,205 psi | 65% | 2684 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 42,018 psi | 66% | 2822 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 46,586 psi | 73% | 2838 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,240 psi | 77% | 2877 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 35,592 psi | 56% | 2697 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 40,263 psi | 63% | 2749 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 52,997 psi | 83% | 2861 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,127 psi | 83% | 2877 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,527 psi | 70% | 2766 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,480 psi | 63% | 2743 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 90% | 39,653 psi | 62% | 2723 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 51,445 psi | 81% | 2871 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,929 psi | 63% | 2740 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 31,140 psi | 49% | 2579 fps | 96.7% |
| Vihtavuori N560 | 67.5 gr | 94% | 49,850 psi | 78% | 3031 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,581 psi | 62% | 2710 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 41,452 psi | 65% | 2799 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,889 psi | 39% | 2464 fps | 95.1% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,366 psi | 66% | 2789 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 86 powders for 7 mm WSM loaded with the .284 | 140gr | Sellier & Bellot FMJ. Norma MRP delivers the highest muzzle velocity at 3,173 fps; across all powders the maximum-charge window runs from 1,896 fps to 3,173 fps. Accurate 3100 gives the best case fill at 100 %, and 86 of the 86 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 140.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for 7 mm WSM with the .284 | 140gr | Sellier & Bellot FMJ 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.