Load Specifications
Load data in caliber 7 mm WSM with .284 | 140gr | Swift A-Frame 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% | 55,230 psi | 87% | 2953 fps | 98.8% |
| Accurate 3100 | <<locked>> | 98% | 54,143 psi | 85% | 3005 fps | 99.7% |
| Accurate 4064 | <<locked>> | 82% | 54,911 psi | 86% | 2940 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,811 psi | 87% | 3051 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 56,217 psi | 88% | 3146 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 54,607 psi | 86% | 2969 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,724 psi | 89% | 3097 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 54,462 psi | 85% | 3091 fps | 97% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 57,000 psi | 89% | 3097 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,695 psi | 87% | 2999 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,651 psi | 87% | 3015 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,652 psi | 89% | 3114 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,230 psi | 85% | 3077 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,231 psi | 88% | 3087 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,522 psi | 90% | 3150 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,331 psi | 85% | 3071 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,253 psi | 74% | 3002 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,853 psi | 86% | 3163 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,707 psi | 83% | 3068 fps | 98% |
| Bofors RP3 | <<locked>> | 84% | 56,449 psi | 88% | 3012 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,522 psi | 90% | 3150 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 55,622 psi | 87% | 2995 fps | 99% |
| Hodgdon H380 | <<locked>> | 84% | 56,898 psi | 89% | 3031 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,157 psi | 85% | 3045 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 88% | 57,348 psi | 90% | 3061 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 54,491 psi | 85% | 3031 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,188 psi | 90% | 3074 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 57,014 psi | 89% | 3031 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,151 psi | 72% | 3038 fps | 97.4% |
| Hodgdon Superformance | <<locked>> | 88% | 54,549 psi | 85% | 3084 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,651 psi | 57% | 1900 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,508 psi | 90% | 3005 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,492 psi | 89% | 2989 fps | 99.4% |
| IMR 4350 | <<locked>> | 92% | 56,971 psi | 89% | 3035 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,188 psi | 90% | 3025 fps | 99.4% |
| IMR 4831 | <<locked>> | 92% | 56,246 psi | 88% | 3045 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,087 psi | 89% | 3045 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,970 psi | 88% | 3022 fps | 96.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,550 psi | 87% | 3123 fps | 97.4% |
| Lovex S062 | <<locked>> | 84% | 57,725 psi | 90% | 2995 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,595 psi | 90% | 3025 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 55,637 psi | 87% | 3015 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,080 psi | 75% | 2904 fps | 99% |
| Norma 203B | <<locked>> | 82% | 54,969 psi | 86% | 3002 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,244 psi | 85% | 3031 fps | 98% |
| Norma MRP | <<locked>> | 98% | 57,334 psi | 90% | 3179 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 54,578 psi | 86% | 3038 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,854 psi | 88% | 3028 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,159 psi | 88% | 3143 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 92% | 56,985 psi | 89% | 3094 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,517 psi | 79% | 3015 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,260 psi | 58% | 1942 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,521 psi | 89% | 3012 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,595 psi | 90% | 3123 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,811 psi | 87% | 3074 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,172 psi | 85% | 3100 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,383 psi | 73% | 3035 fps | 98.5% |
| Rottweil R 902 | <<locked>> | 82% | 56,246 psi | 88% | 2959 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,565 psi | 89% | 3009 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,824 psi | 86% | 3012 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 96% | 55,564 psi | 87% | 3074 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 55,622 psi | 87% | 2995 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,595 psi | 90% | 3025 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 57,725 psi | 90% | 2995 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,637 psi | 87% | 3015 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,607 psi | 86% | 3015 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,334 psi | 90% | 2887 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,290 psi | 90% | 2976 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,085 psi | 86% | 3068 fps | 98.4% |
| Somchem S355 | <<locked>> | 86% | 56,507 psi | 89% | 3005 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,478 psi | 89% | 2999 fps | 96.7% |
| Somchem S365 | <<locked>> | 92% | 54,172 psi | 85% | 3038 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 56,159 psi | 88% | 3045 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 82% | 56,594 psi | 89% | 2913 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,855 psi | 89% | 2930 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 54,186 psi | 85% | 2923 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,405 psi | 88% | 3028 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,361 psi | 87% | 3018 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 82% | 54,940 psi | 86% | 2923 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,680 psi | 87% | 3031 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,869 psi | 89% | 3097 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 57,377 psi | 90% | 3166 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,260 psi | 88% | 2992 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,404 psi | 85% | 3051 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,270 psi | 79% | 3143 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,289 psi | 88% | 3041 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% | 51,576 psi | 81% | 2894 fps | 98.3% |
| Accurate 3100 | <<locked>> | 84% | 33,533 psi | 53% | 2592 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 51,387 psi | 81% | 2887 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,595 psi | 62% | 2753 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 96% | 52,489 psi | 82% | 3081 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 48,211 psi | 76% | 2864 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 43,555 psi | 68% | 2851 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 94% | 47,572 psi | 75% | 2959 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 43,918 psi | 69% | 2854 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,892 psi | 77% | 2887 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,156 psi | 82% | 2959 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,334 psi | 60% | 2762 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,642 psi | 68% | 2894 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 43,439 psi | 68% | 2848 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,988 psi | 64% | 2838 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,224 psi | 44% | 2503 fps | 96.6% |
| Alliant Reloder-25 | <<locked>> | 90% | 34,171 psi | 54% | 2690 fps | 96% |
| Alliant Reloder-26 | 59.4 gr | 80% | 30,327 psi | 48% | 2618 fps | 95% |
| Bofors RP15 | <<locked>> | 94% | 43,279 psi | 68% | 2884 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 49,429 psi | 77% | 2900 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,988 psi | 64% | 2838 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 43,279 psi | 68% | 2769 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 49,690 psi | 78% | 2913 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 41,553 psi | 65% | 2802 fps | 96.8% |
| Hodgdon H4350 | <<locked>> | 80% | 44,251 psi | 69% | 2822 fps | 96.2% |
| Hodgdon H4831 | <<locked>> | 94% | 50,879 psi | 80% | 2969 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,922 psi | 78% | 2949 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,882 psi | 56% | 2651 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 96% | 40,466 psi | 63% | 2897 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 40,408 psi | 63% | 2812 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,325 psi | 43% | 1696 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,720 psi | 79% | 2897 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,040 psi | 83% | 2933 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 38,870 psi | 61% | 2690 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,759 psi | 70% | 2799 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 38,043 psi | 60% | 2703 fps | 98.4% |
| IMR 4895 | <<locked>> | 80% | 53,534 psi | 84% | 2989 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 49,487 psi | 78% | 2907 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 96% | 48,718 psi | 76% | 2999 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 50,995 psi | 80% | 2894 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,206 psi | 66% | 2746 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 40,451 psi | 63% | 2726 fps | 96.7% |
| Lovex S071 | <<locked>> | 90% | 34,882 psi | 55% | 2625 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 51,517 psi | 81% | 2946 fps | 100% |
| Norma 204 | <<locked>> | 84% | 44,179 psi | 69% | 2841 fps | 95.6% |
| Norma MRP | 62 gr | 86% | 37,637 psi | 59% | 2785 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 39,189 psi | 61% | 2746 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 80% | 52,083 psi | 82% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 45,440 psi | 71% | 2943 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 38,058 psi | 60% | 2730 fps | 96.7% |
| Ramshot Magnum | <<locked>> | 94% | 40,408 psi | 63% | 2808 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,934 psi | 44% | 1739 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,763 psi | 78% | 2897 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,354 psi | 73% | 2949 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,479 psi | 62% | 2772 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,029 psi | 60% | 2776 fps | 97.8% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 37,391 psi | 59% | 2812 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 52,968 psi | 83% | 2907 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,557 psi | 73% | 2844 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 48,269 psi | 76% | 2894 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 88% | 42,496 psi | 67% | 2828 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 43,279 psi | 68% | 2769 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,206 psi | 66% | 2746 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 50,995 psi | 80% | 2894 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,451 psi | 63% | 2726 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,747 psi | 75% | 2900 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,471 psi | 74% | 2743 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,466 psi | 65% | 2690 fps | 96.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 42,163 psi | 66% | 2825 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 46,702 psi | 73% | 2844 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,516 psi | 78% | 2881 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 35,752 psi | 56% | 2703 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 40,393 psi | 63% | 2753 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 53,214 psi | 83% | 2864 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,301 psi | 84% | 2877 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,657 psi | 70% | 2769 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,611 psi | 64% | 2746 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 90% | 39,740 psi | 62% | 2726 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 51,561 psi | 81% | 2874 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,045 psi | 63% | 2743 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 31,430 psi | 49% | 2589 fps | 96.8% |
| Vihtavuori N560 | 67.7 gr | 94% | 49,922 psi | 78% | 3035 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,682 psi | 62% | 2713 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 41,553 psi | 65% | 2802 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,976 psi | 39% | 2470 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,685 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 | Swift A-Frame. Norma MRP delivers the highest muzzle velocity at 3,179 fps; across all powders the maximum-charge window runs from 1,900 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 | Swift A-Frame 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.