Load Specifications
Load data in caliber 7 mm WSM with .284 | 140gr | Woodleigh PP SN 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.
A valid access license is required to use the Personalized Load Calculator.
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% | 55,158 psi | 86% | 2949 fps | 98.8% |
| Accurate 3100 | <<locked>> | 98% | 54,085 psi | 85% | 3002 fps | 99.7% |
| Accurate 4064 | <<locked>> | 82% | 54,824 psi | 86% | 2940 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 56,043 psi | 88% | 3054 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 56,391 psi | 88% | 3150 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 84% | 54,534 psi | 85% | 2969 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,913 psi | 89% | 3100 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 54,404 psi | 85% | 3091 fps | 97% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 56,913 psi | 89% | 3097 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,637 psi | 87% | 2995 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,854 psi | 88% | 3022 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,579 psi | 89% | 3110 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,143 psi | 85% | 3074 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,144 psi | 88% | 3084 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,464 psi | 90% | 3150 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,505 psi | 85% | 3074 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,181 psi | 74% | 3002 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,781 psi | 86% | 3163 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,649 psi | 83% | 3068 fps | 97.9% |
| Bofors RP3 | <<locked>> | 84% | 56,681 psi | 89% | 3015 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,464 psi | 90% | 3150 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 55,825 psi | 87% | 3002 fps | 99% |
| Hodgdon H380 | <<locked>> | 84% | 56,811 psi | 89% | 3031 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,317 psi | 85% | 3048 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 57,522 psi | 90% | 3068 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 54,679 psi | 86% | 3035 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,116 psi | 90% | 3074 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,927 psi | 89% | 3028 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,282 psi | 73% | 3041 fps | 97.4% |
| Hodgdon Superformance | <<locked>> | 88% | 54,491 psi | 85% | 3084 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,637 psi | 57% | 1896 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,464 psi | 90% | 3005 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,449 psi | 88% | 2989 fps | 99.4% |
| IMR 4350 | <<locked>> | 92% | 56,898 psi | 89% | 3035 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,406 psi | 90% | 3028 fps | 99.4% |
| IMR 4831 | <<locked>> | 92% | 56,159 psi | 88% | 3041 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,319 psi | 90% | 3048 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,173 psi | 88% | 3025 fps | 96.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,695 psi | 87% | 3127 fps | 97.4% |
| Lovex S062 | <<locked>> | 82% | 54,375 psi | 85% | 2946 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,522 psi | 90% | 3022 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 55,579 psi | 87% | 3015 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,022 psi | 75% | 2904 fps | 99% |
| Norma 203B | <<locked>> | 82% | 55,158 psi | 86% | 3005 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,172 psi | 85% | 3031 fps | 98% |
| Norma MRP | <<locked>> | 98% | 57,508 psi | 90% | 3179 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 54,520 psi | 85% | 3035 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,811 psi | 87% | 3028 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,391 psi | 88% | 3150 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 56,927 psi | 89% | 3094 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,444 psi | 79% | 3012 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,231 psi | 58% | 1939 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,695 psi | 89% | 3015 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,508 psi | 90% | 3123 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 56,014 psi | 88% | 3077 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,114 psi | 85% | 3100 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,282 psi | 73% | 3031 fps | 98.5% |
| Rottweil R 902 | <<locked>> | 82% | 56,173 psi | 88% | 2956 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,797 psi | 89% | 3012 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,737 psi | 86% | 3009 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 96% | 55,506 psi | 87% | 3071 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 55,825 psi | 87% | 3002 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,522 psi | 90% | 3022 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 54,375 psi | 85% | 2946 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,579 psi | 87% | 3015 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,534 psi | 85% | 3015 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,261 psi | 90% | 2887 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,203 psi | 90% | 2976 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,027 psi | 86% | 3068 fps | 98.4% |
| Somchem S355 | <<locked>> | 86% | 56,420 psi | 88% | 3002 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,623 psi | 89% | 3002 fps | 96.8% |
| Somchem S365 | <<locked>> | 92% | 54,114 psi | 85% | 3038 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 56,072 psi | 88% | 3045 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 82% | 56,797 psi | 89% | 2913 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,753 psi | 89% | 2930 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 54,360 psi | 85% | 2927 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,637 psi | 89% | 3031 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,593 psi | 87% | 3022 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 82% | 55,114 psi | 86% | 2927 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,593 psi | 87% | 3031 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 57,043 psi | 89% | 3104 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 57,609 psi | 90% | 3173 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,202 psi | 88% | 2992 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,592 psi | 86% | 3051 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,198 psi | 79% | 3143 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,463 psi | 88% | 3045 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% | 51,764 psi | 81% | 2894 fps | 98.3% |
| Accurate 3100 | <<locked>> | 84% | 33,489 psi | 52% | 2592 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 51,605 psi | 81% | 2890 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,740 psi | 62% | 2759 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 96% | 52,431 psi | 82% | 3081 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 48,399 psi | 76% | 2864 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 43,729 psi | 69% | 2854 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 94% | 47,732 psi | 75% | 2963 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 43,859 psi | 69% | 2854 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,095 psi | 77% | 2890 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,330 psi | 82% | 2963 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,290 psi | 60% | 2762 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,816 psi | 69% | 2897 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 43,366 psi | 68% | 2848 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 90% | 41,176 psi | 65% | 2841 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,311 psi | 44% | 2507 fps | 96.7% |
| Alliant Reloder-25 | <<locked>> | 88% | 32,126 psi | 50% | 2631 fps | 95% |
| Alliant Reloder-26 | 59.4 gr | 80% | 30,313 psi | 48% | 2618 fps | 95% |
| Bofors RP15 | <<locked>> | 94% | 43,221 psi | 68% | 2884 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 49,617 psi | 78% | 2904 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 41,176 psi | 65% | 2841 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 43,439 psi | 68% | 2772 fps | 96.8% |
| Hodgdon H380 | <<locked>> | 80% | 49,864 psi | 78% | 2917 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 41,510 psi | 65% | 2802 fps | 96.8% |
| Hodgdon H4350 | <<locked>> | 80% | 44,411 psi | 70% | 2825 fps | 96.3% |
| Hodgdon H4831 | <<locked>> | 94% | 51,097 psi | 80% | 2972 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 50,067 psi | 78% | 2953 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,013 psi | 56% | 2654 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 96% | 40,582 psi | 64% | 2904 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 40,596 psi | 64% | 2815 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,311 psi | 43% | 1696 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,894 psi | 80% | 2900 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,982 psi | 83% | 2933 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 39,030 psi | 61% | 2694 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,715 psi | 70% | 2799 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 38,029 psi | 60% | 2703 fps | 98.4% |
| IMR 4895 | <<locked>> | 80% | 53,708 psi | 84% | 2992 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 49,414 psi | 77% | 2904 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 96% | 48,631 psi | 76% | 2995 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 51,184 psi | 80% | 2897 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,366 psi | 66% | 2753 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 40,596 psi | 64% | 2730 fps | 96.8% |
| Lovex S071 | <<locked>> | 90% | 34,867 psi | 55% | 2625 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 51,692 psi | 81% | 2949 fps | 100% |
| Norma 204 | <<locked>> | 84% | 44,106 psi | 69% | 2841 fps | 95.6% |
| Norma MRP | 62 gr | 86% | 37,594 psi | 59% | 2785 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 39,334 psi | 62% | 2749 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 80% | 52,315 psi | 82% | 2972 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 45,382 psi | 71% | 2943 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 38,203 psi | 60% | 2736 fps | 96.7% |
| Ramshot Magnum | <<locked>> | 94% | 40,379 psi | 63% | 2808 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,920 psi | 44% | 1739 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,719 psi | 78% | 2897 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,528 psi | 73% | 2949 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,421 psi | 62% | 2772 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,159 psi | 60% | 2779 fps | 97.9% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 37,507 psi | 59% | 2815 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 52,924 psi | 83% | 2907 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,746 psi | 73% | 2848 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 48,211 psi | 76% | 2890 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 88% | 42,482 psi | 67% | 2828 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 43,439 psi | 68% | 2772 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,366 psi | 66% | 2753 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 51,184 psi | 80% | 2897 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,596 psi | 64% | 2730 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,906 psi | 75% | 2904 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,645 psi | 75% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,408 psi | 65% | 2690 fps | 96.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 42,090 psi | 66% | 2822 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 46,876 psi | 73% | 2844 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,443 psi | 77% | 2881 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 35,853 psi | 56% | 2703 fps | 99.8% |
| Somchem S385 | <<locked>> | 84% | 37,927 psi | 59% | 2697 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 53,403 psi | 84% | 2867 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,476 psi | 84% | 2881 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,817 psi | 70% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,756 psi | 64% | 2749 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 90% | 39,885 psi | 63% | 2730 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 51,721 psi | 81% | 2874 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,190 psi | 63% | 2746 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 31,401 psi | 49% | 2589 fps | 96.8% |
| Vihtavuori N560 | 67.8 gr | 94% | 50,082 psi | 78% | 3038 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,827 psi | 62% | 2713 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 41,727 psi | 65% | 2805 fps | 96.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,048 psi | 39% | 2470 fps | 95.3% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,612 psi | 67% | 2795 fps | 95.4% |
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 | Woodleigh PP SN. Norma MRP delivers the highest muzzle velocity at 3,179 fps; across all powders the maximum-charge window runs from 1,896 fps to 3,179 fps. Alliant Reloder-22 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 1:13.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-22, 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, Norma MRP, Vihtavuori N560 rank at the top here: for 7 mm WSM with the .284 | 140gr | Woodleigh PP SN 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.