Load Specifications
Load data in caliber 7 mm WSM with .284 | 140gr | Speer TBBC bullet and 89 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 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 2495 | <<locked>> | 82% | 57,580 psi | 90% | 2923 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,737 psi | 86% | 2943 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,246 psi | 90% | 3048 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 54,505 psi | 85% | 2933 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,535 psi | 87% | 3045 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 55,782 psi | 87% | 3136 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 86% | 57,667 psi | 90% | 3015 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,231 psi | 88% | 3087 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 98% | 54,041 psi | 85% | 3081 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 57,667 psi | 90% | 3150 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 56,507 psi | 89% | 3087 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,114 psi | 86% | 2986 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,347 psi | 87% | 3009 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,072 psi | 88% | 3100 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 57,711 psi | 90% | 3127 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,738 psi | 87% | 3074 fps | 98.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,029 psi | 89% | 3140 fps | 98.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,809 psi | 84% | 3064 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,833 psi | 73% | 2992 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,041 psi | 85% | 3153 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,214 psi | 82% | 3058 fps | 97.8% |
| Bofors RP3 | <<locked>> | 84% | 56,115 psi | 88% | 3005 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,029 psi | 89% | 3140 fps | 98.7% |
| Bofors RP7 | <<locked>> | 88% | 55,347 psi | 87% | 2989 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 84% | 56,362 psi | 88% | 3022 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 57,566 psi | 90% | 3100 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 88% | 57,058 psi | 89% | 3054 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 96% | 54,041 psi | 85% | 3022 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,739 psi | 89% | 3068 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,449 psi | 88% | 3022 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 57,740 psi | 90% | 3058 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,759 psi | 72% | 3025 fps | 97.2% |
| Hodgdon Superformance | <<locked>> | 88% | 54,056 psi | 85% | 3074 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,579 psi | 57% | 1893 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,203 psi | 90% | 2999 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,970 psi | 88% | 2979 fps | 99.3% |
| IMR 4350 | <<locked>> | 92% | 56,478 psi | 89% | 3025 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,956 psi | 89% | 3018 fps | 99.4% |
| IMR 4831 | <<locked>> | 92% | 55,709 psi | 87% | 3031 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,768 psi | 89% | 3038 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,535 psi | 87% | 3012 fps | 96.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,085 psi | 86% | 3114 fps | 97.2% |
| Lovex S062 | <<locked>> | 84% | 57,435 psi | 90% | 2989 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,087 psi | 89% | 3015 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 55,129 psi | 86% | 3005 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,572 psi | 75% | 2890 fps | 98.9% |
| Norma 203B | <<locked>> | 82% | 54,650 psi | 86% | 2995 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,479 psi | 90% | 3081 fps | 98.4% |
| Norma MRP | <<locked>> | 98% | 56,797 psi | 89% | 3169 fps | 99.5% |
| Norma URP | <<locked>> | 92% | 57,740 psi | 90% | 3084 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,579 psi | 87% | 3022 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,753 psi | 87% | 3133 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 92% | 56,463 psi | 88% | 3084 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,850 psi | 78% | 2999 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,173 psi | 58% | 1936 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,289 psi | 88% | 3005 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,927 psi | 89% | 3114 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,259 psi | 87% | 3064 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,664 psi | 84% | 3091 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,788 psi | 72% | 3018 fps | 98.3% |
| Rottweil R 902 | <<locked>> | 82% | 55,927 psi | 88% | 2953 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,231 psi | 88% | 3002 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,331 psi | 85% | 2999 fps | 97% |
| Rottweil R 905 | <<locked>> | 96% | 55,042 psi | 86% | 3061 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 55,347 psi | 87% | 2989 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,087 psi | 89% | 3015 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 57,435 psi | 90% | 2989 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,129 psi | 86% | 3005 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,099 psi | 85% | 3005 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,768 psi | 89% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,826 psi | 89% | 2966 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,563 psi | 86% | 3058 fps | 98.3% |
| Somchem S355 | <<locked>> | 86% | 56,173 psi | 88% | 2995 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,043 psi | 88% | 2992 fps | 96.6% |
| Somchem S365 | <<locked>> | 94% | 57,479 psi | 90% | 3084 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,680 psi | 87% | 3038 fps | 99% |
| Vihtavuori N135 | <<locked>> | 82% | 56,217 psi | 88% | 2907 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,521 psi | 89% | 2923 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,566 psi | 90% | 2969 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,115 psi | 88% | 3022 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,940 psi | 86% | 3009 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 82% | 54,665 psi | 86% | 2917 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,172 psi | 86% | 3025 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,318 psi | 88% | 3091 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 56,913 psi | 89% | 3156 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,782 psi | 87% | 2986 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,867 psi | 84% | 3038 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,647 psi | 78% | 3133 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,825 psi | 87% | 3031 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 2495 | <<locked>> | 80% | 53,838 psi | 84% | 2874 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,285 psi | 80% | 2884 fps | 98.2% |
| Accurate 3100 | <<locked>> | 84% | 33,243 psi | 52% | 2582 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 51,024 psi | 80% | 2881 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,262 psi | 62% | 2746 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 96% | 51,779 psi | 81% | 3068 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 47,892 psi | 75% | 2854 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 43,323 psi | 68% | 2844 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 94% | 47,137 psi | 74% | 2949 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 53,548 psi | 84% | 3084 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 43,439 psi | 68% | 2844 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,559 psi | 76% | 2881 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,837 psi | 81% | 2953 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,043 psi | 60% | 2756 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,352 psi | 68% | 2887 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 43,004 psi | 67% | 2838 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 92% | 43,410 psi | 68% | 2887 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,949 psi | 44% | 2493 fps | 96.4% |
| Alliant Reloder-25 | <<locked>> | 90% | 33,808 psi | 53% | 2680 fps | 95.8% |
| Alliant Reloder-26 | 60.4 gr | 82% | 32,242 psi | 51% | 2677 fps | 96% |
| Bofors RP15 | <<locked>> | 94% | 42,815 psi | 67% | 2874 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 49,124 psi | 77% | 2894 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 43,410 psi | 68% | 2887 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 43,004 psi | 67% | 2759 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 80% | 49,385 psi | 77% | 2907 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 41,278 psi | 65% | 2795 fps | 96.7% |
| Hodgdon H4350 | <<locked>> | 80% | 43,990 psi | 69% | 2815 fps | 96.1% |
| Hodgdon H4831 | <<locked>> | 94% | 50,430 psi | 79% | 2959 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,472 psi | 78% | 2940 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,563 psi | 56% | 2641 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 54,070 psi | 85% | 3002 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 40,089 psi | 63% | 2887 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 40,219 psi | 63% | 2805 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,383 psi | 43% | 1693 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,386 psi | 79% | 2890 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,721 psi | 83% | 2923 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 38,595 psi | 60% | 2680 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,483 psi | 70% | 2792 fps | 97.4% |
| IMR 4831 | <<locked>> | 80% | 37,753 psi | 59% | 2697 fps | 98.3% |
| IMR 4895 | <<locked>> | 80% | 53,200 psi | 83% | 2982 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 49,066 psi | 77% | 2897 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 96% | 48,283 psi | 76% | 2986 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 50,662 psi | 79% | 2884 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,930 psi | 66% | 2740 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 40,176 psi | 63% | 2717 fps | 96.6% |
| Lovex S071 | <<locked>> | 90% | 34,447 psi | 54% | 2612 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 51,198 psi | 80% | 2936 fps | 100% |
| Norma 204 | <<locked>> | 84% | 43,671 psi | 68% | 2831 fps | 95.4% |
| Norma MRP | 61.5 gr | 86% | 37,217 psi | 58% | 2776 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 38,885 psi | 61% | 2736 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 51,808 psi | 81% | 2963 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 48,298 psi | 76% | 2999 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 37,768 psi | 59% | 2723 fps | 96.5% |
| Ramshot Magnum | <<locked>> | 94% | 40,045 psi | 63% | 2799 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,789 psi | 44% | 1732 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,269 psi | 77% | 2887 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,006 psi | 72% | 2940 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,986 psi | 61% | 2762 fps | 98.3% |
| ReloadSwiss RS 70 | 58.4 gr | 80% | 37,797 psi | 59% | 2769 fps | 97.7% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 39,813 psi | 62% | 2874 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 80% | 52,620 psi | 82% | 2900 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,224 psi | 72% | 2838 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 47,790 psi | 75% | 2881 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 88% | 42,032 psi | 66% | 2818 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 43,004 psi | 67% | 2759 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,930 psi | 66% | 2740 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 50,662 psi | 79% | 2884 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,176 psi | 63% | 2717 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,413 psi | 74% | 2894 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,152 psi | 74% | 2736 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,017 psi | 64% | 2680 fps | 96.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 41,655 psi | 65% | 2812 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 46,383 psi | 73% | 2835 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,124 psi | 77% | 2871 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 35,389 psi | 55% | 2694 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 40,132 psi | 63% | 2746 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 52,808 psi | 83% | 2858 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,968 psi | 83% | 2874 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,338 psi | 69% | 2759 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,292 psi | 63% | 2736 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 90% | 39,508 psi | 62% | 2720 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 51,256 psi | 80% | 2867 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,784 psi | 62% | 2736 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 31,140 psi | 49% | 2579 fps | 96.6% |
| Vihtavuori N560 | <<locked>> | 94% | 49,487 psi | 78% | 3025 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,450 psi | 62% | 2703 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 41,278 psi | 65% | 2795 fps | 96.7% |
| Winchester StaBALL HD | <<locked>> | 82% | 26,455 psi | 41% | 2530 fps | 96.5% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,221 psi | 66% | 2782 fps | 95.2% |
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 89 powders for 7 mm WSM loaded with the .284 | 140gr | Speer TBBC. Norma MRP delivers the highest muzzle velocity at 3,169 fps; across all powders the maximum-charge window runs from 1,893 fps to 3,169 fps. Accurate 3100 gives the best case fill at 100 %, and 89 of the 89 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 1:12.0 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, ReloadSwiss RS 70 rank at the top here: for 7 mm WSM with the .284 | 140gr | Speer TBBC 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.