Load Specifications
Load data in caliber 7 mm WSM with .284 | 140gr | Barnes X S bullet and 84 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Alliant Reloder-26 and ReloadSwiss RS 70.
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% | 56,724 psi | 89% | 2949 fps | 98.8% |
| Accurate 3100 | <<locked>> | 98% | 56,333 psi | 88% | 3012 fps | 99.7% |
| Accurate 4064 | <<locked>> | 82% | 57,638 psi | 90% | 2949 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,476 psi | 85% | 3005 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 57,624 psi | 90% | 3150 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 84% | 55,854 psi | 88% | 2969 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,114 psi | 85% | 3031 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 98% | 55,622 psi | 87% | 3087 fps | 97% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 54,592 psi | 86% | 3035 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,174 psi | 90% | 2995 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,261 psi | 90% | 3015 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,273 psi | 85% | 3054 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,477 psi | 87% | 3077 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 57,232 psi | 90% | 3081 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 55,158 psi | 86% | 3091 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,608 psi | 87% | 3074 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,573 psi | 76% | 3005 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 56,028 psi | 88% | 3166 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,128 psi | 85% | 3071 fps | 98% |
| Bofors RP3 | <<locked>> | 82% | 55,100 psi | 86% | 2966 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 55,158 psi | 86% | 3091 fps | 98.3% |
| Bofors RP7 | <<locked>> | 88% | 57,261 psi | 90% | 2995 fps | 99% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,993 psi | 75% | 2933 fps | 96% |
| Hodgdon H380 | <<locked>> | 82% | 54,984 psi | 86% | 2976 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 88% | 55,579 psi | 87% | 3045 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 86% | 55,071 psi | 86% | 3002 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 96% | 55,622 psi | 87% | 3028 fps | 96.3% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,534 psi | 85% | 3009 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,897 psi | 86% | 2979 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,747 psi | 75% | 3048 fps | 97.5% |
| Hodgdon Superformance | <<locked>> | 88% | 55,724 psi | 87% | 3084 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,999 psi | 58% | 1883 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,434 psi | 87% | 2949 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,522 psi | 90% | 2982 fps | 99.4% |
| IMR 4350 | <<locked>> | 90% | 54,679 psi | 86% | 2976 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,143 psi | 86% | 2966 fps | 99.1% |
| IMR 4831 | <<locked>> | 90% | 54,375 psi | 85% | 2989 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 57,130 psi | 90% | 3015 fps | 96.8% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,797 psi | 89% | 3120 fps | 97.3% |
| Lovex S062 | <<locked>> | 82% | 56,115 psi | 88% | 2946 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,782 psi | 87% | 2969 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 57,305 psi | 90% | 3015 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,502 psi | 79% | 2920 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 56,652 psi | 89% | 3002 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,405 psi | 87% | 3025 fps | 97.9% |
| Norma MRP | <<locked>> | 96% | 54,650 psi | 86% | 3114 fps | 99.2% |
| Norma URP | <<locked>> | 90% | 56,043 psi | 88% | 3038 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,305 psi | 90% | 3028 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 57,377 psi | 90% | 3140 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 90% | 54,694 psi | 86% | 3035 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,909 psi | 81% | 3015 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,724 psi | 59% | 1926 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,534 psi | 85% | 2956 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,897 psi | 86% | 3068 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 57,479 psi | 90% | 3077 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,201 psi | 87% | 3100 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,022 psi | 75% | 3041 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 84% | 55,129 psi | 86% | 2963 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,927 psi | 88% | 3005 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 96% | 56,739 psi | 89% | 3071 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 57,261 psi | 90% | 2995 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,782 psi | 87% | 2969 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 56,115 psi | 88% | 2946 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,305 psi | 90% | 3015 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,854 psi | 88% | 3012 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,201 psi | 87% | 2835 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,274 psi | 87% | 2917 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,246 psi | 88% | 3064 fps | 98.4% |
| Somchem S355 | <<locked>> | 84% | 54,824 psi | 86% | 2953 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,331 psi | 85% | 2940 fps | 96% |
| Somchem S365 | <<locked>> | 92% | 55,579 psi | 87% | 3041 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 57,667 psi | 90% | 3045 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 86% | 55,782 psi | 87% | 2923 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,418 psi | 85% | 2972 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 56,826 psi | 89% | 3015 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 82% | 56,623 psi | 89% | 2923 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 57,101 psi | 89% | 3031 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,376 psi | 87% | 3058 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,752 psi | 86% | 3100 fps | 96.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,952 psi | 80% | 3015 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,276 psi | 90% | 2986 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,883 psi | 88% | 3051 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,445 psi | 81% | 3153 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 57,406 psi | 90% | 3035 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% | 53,243 psi | 83% | 2894 fps | 98.4% |
| Accurate 3100 | <<locked>> | 82% | 33,982 psi | 53% | 2575 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 54,331 psi | 85% | 2900 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 42,250 psi | 66% | 2785 fps | 99% |
| Accurate MAGPRO | <<locked>> | 96% | 53,853 psi | 84% | 3084 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 49,632 psi | 78% | 2861 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 45,092 psi | 71% | 2861 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 94% | 48,994 psi | 77% | 2963 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 42,685 psi | 67% | 2805 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,749 psi | 80% | 2894 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 54,012 psi | 85% | 2966 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,001 psi | 63% | 2779 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,411 psi | 71% | 2904 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 42,250 psi | 66% | 2799 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 90% | 42,757 psi | 67% | 2854 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,371 psi | 48% | 2543 fps | 97.5% |
| Alliant Reloder-25 | <<locked>> | 88% | 34,026 psi | 53% | 2661 fps | 95.7% |
| Alliant Reloder-26 | 57.4 gr | 80% | 32,634 psi | 51% | 2664 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 42,264 psi | 66% | 2841 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 51,663 psi | 81% | 2910 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 42,757 psi | 67% | 2854 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 45,208 psi | 71% | 2779 fps | 97% |
| Hodgdon H1000 | <<locked>> | 98% | 45,179 psi | 71% | 2874 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 51,547 psi | 81% | 2920 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 43,105 psi | 68% | 2812 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 80% | 45,716 psi | 72% | 2825 fps | 96.4% |
| Hodgdon H4831 | <<locked>> | 94% | 52,243 psi | 82% | 2969 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,256 psi | 80% | 2953 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,768 psi | 59% | 2667 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 96% | 42,250 psi | 66% | 2920 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 42,235 psi | 66% | 2828 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,789 psi | 44% | 1686 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,243 psi | 82% | 2897 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 54,273 psi | 85% | 2927 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 40,582 psi | 64% | 2703 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,079 psi | 72% | 2802 fps | 97.6% |
| IMR 4831 | <<locked>> | 80% | 40,074 psi | 63% | 2723 fps | 98.7% |
| IMR 4955 Enduron | <<locked>> | 92% | 50,618 psi | 79% | 2904 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 96% | 49,937 psi | 78% | 2999 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 52,939 psi | 83% | 2897 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,237 psi | 69% | 2762 fps | 98.4% |
| Lovex S070 | <<locked>> | 80% | 42,627 psi | 67% | 2746 fps | 97.1% |
| Lovex S071 | <<locked>> | 88% | 35,273 psi | 55% | 2608 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 53,403 psi | 84% | 2953 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,815 psi | 67% | 2789 fps | 95% |
| Norma MRP | 59.8 gr | 86% | 39,349 psi | 62% | 2808 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 41,176 psi | 65% | 2766 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 80% | 53,563 psi | 84% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 46,934 psi | 74% | 2946 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 39,842 psi | 62% | 2749 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 92% | 39,566 psi | 62% | 2762 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,311 psi | 44% | 1722 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,242 psi | 80% | 2900 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,993 psi | 75% | 2956 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,437 psi | 65% | 2792 fps | 98.7% |
| ReloadSwiss RS 70 | 56.8 gr | 80% | 39,711 psi | 62% | 2795 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 39,421 psi | 62% | 2841 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 48,936 psi | 77% | 2861 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,731 psi | 73% | 2838 fps | 95% |
| Rottweil R 905 | <<locked>> | 86% | 41,466 psi | 65% | 2782 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 45,208 psi | 71% | 2779 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,237 psi | 69% | 2762 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 52,939 psi | 83% | 2897 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,627 psi | 67% | 2746 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,342 psi | 77% | 2907 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,124 psi | 77% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,366 psi | 68% | 2703 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 43,714 psi | 69% | 2831 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 48,733 psi | 76% | 2854 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 50,894 psi | 80% | 2881 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 37,869 psi | 59% | 2726 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 39,856 psi | 62% | 2713 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 46,601 psi | 73% | 2776 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,540 psi | 67% | 2759 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 41,481 psi | 65% | 2743 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 53,243 psi | 83% | 2874 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,032 psi | 66% | 2762 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 33,794 psi | 53% | 2628 fps | 97.6% |
| Vihtavuori N560 | <<locked>> | 94% | 51,285 psi | 80% | 3038 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 98% | 47,718 psi | 75% | 2956 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,263 psi | 65% | 2720 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 43,337 psi | 68% | 2818 fps | 97.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,311 psi | 43% | 2536 fps | 96.9% |
| Winchester Supreme 780 | <<locked>> | 90% | 44,193 psi | 69% | 2802 fps | 95.6% |
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 84 powders for 7 mm WSM loaded with the .284 | 140gr | Barnes X S. Alliant Reloder-26 delivers the highest muzzle velocity at 3,166 fps; across all powders the maximum-charge window runs from 1,883 fps to 3,166 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 84 of the 84 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 140.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, Bofors RP15 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, Alliant Reloder-26, ReloadSwiss RS 70 rank at the top here: for 7 mm WSM with the .284 | 140gr | Barnes X S 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.