Load Specifications
Load data in caliber 7 mm WSM with .284 | 139gr | Sellier & Bellot SPRN 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, Vihtavuori N560 and Alliant Reloder-26.
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% | 56,014 psi | 88% | 2982 fps | 99% |
| Accurate 3100 | <<locked>> | 98% | 55,288 psi | 87% | 3035 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 55,767 psi | 87% | 2966 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 57,261 psi | 90% | 3087 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 53,824 psi | 84% | 3120 fps | 96% |
| ADI AR 2208 | <<locked>> | 84% | 55,564 psi | 87% | 3002 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,215 psi | 85% | 3071 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 98% | 55,709 psi | 87% | 3130 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,681 psi | 89% | 3028 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,666 psi | 89% | 3048 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,143 psi | 85% | 3087 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,376 psi | 87% | 3107 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 57,363 psi | 90% | 3120 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 55,158 psi | 86% | 3127 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,840 psi | 88% | 3107 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,428 psi | 76% | 3038 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 56,347 psi | 88% | 3199 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,056 psi | 85% | 3107 fps | 98.2% |
| Bofors RP3 | <<locked>> | 84% | 57,725 psi | 90% | 3045 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 55,158 psi | 86% | 3127 fps | 98.5% |
| Bofors RP7 | <<locked>> | 88% | 56,724 psi | 89% | 3031 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,732 psi | 75% | 2969 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 82% | 54,230 psi | 85% | 3005 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,448 psi | 87% | 3081 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 54,839 psi | 86% | 3038 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 96% | 55,796 psi | 87% | 3068 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,766 psi | 86% | 3051 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,665 psi | 86% | 3012 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,282 psi | 74% | 3077 fps | 97.8% |
| Hodgdon Superformance | <<locked>> | 88% | 55,709 psi | 87% | 3117 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,579 psi | 57% | 1913 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,940 psi | 86% | 2982 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,363 psi | 90% | 3022 fps | 99.5% |
| IMR 4350 | <<locked>> | 90% | 54,418 psi | 85% | 3009 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,752 psi | 86% | 3002 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 57,580 psi | 90% | 3074 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,985 psi | 89% | 3054 fps | 97.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,840 psi | 89% | 3163 fps | 97.7% |
| Lovex S062 | <<locked>> | 82% | 55,201 psi | 87% | 2972 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,129 psi | 86% | 3002 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 56,652 psi | 89% | 3048 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,255 psi | 77% | 2936 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 55,985 psi | 88% | 3031 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,187 psi | 86% | 3064 fps | 98.2% |
| Norma MRP | <<locked>> | 96% | 54,911 psi | 86% | 3150 fps | 99.4% |
| Norma URP | <<locked>> | 90% | 55,666 psi | 87% | 3068 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,000 psi | 89% | 3058 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,577 psi | 84% | 3114 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 90% | 54,389 psi | 85% | 3064 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,895 psi | 81% | 3051 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,391 psi | 59% | 1959 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 57,566 psi | 90% | 3045 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,708 psi | 86% | 3097 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 57,116 psi | 90% | 3107 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,390 psi | 87% | 3136 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,558 psi | 75% | 3074 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 82% | 57,043 psi | 89% | 2986 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 54,201 psi | 85% | 2989 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,941 psi | 88% | 3045 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 96% | 56,753 psi | 89% | 3107 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 56,724 psi | 89% | 3031 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,129 psi | 86% | 3002 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 55,201 psi | 87% | 2972 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,652 psi | 89% | 3048 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,782 psi | 87% | 3048 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,679 psi | 86% | 2864 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,665 psi | 86% | 2949 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,289 psi | 88% | 3104 fps | 98.7% |
| Somchem S355 | <<locked>> | 86% | 57,450 psi | 90% | 3031 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 57,638 psi | 90% | 3035 fps | 97.1% |
| Somchem S365 | <<locked>> | 92% | 55,376 psi | 87% | 3071 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 57,508 psi | 90% | 3084 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 86% | 55,303 psi | 87% | 2956 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 57,740 psi | 90% | 3064 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 56,666 psi | 89% | 3054 fps | 99% |
| Vihtavuori N540 | <<locked>> | 82% | 56,072 psi | 88% | 2956 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 56,898 psi | 89% | 3068 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,752 psi | 86% | 3081 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,940 psi | 86% | 3140 fps | 96.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,647 psi | 79% | 3045 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,377 psi | 90% | 3022 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,448 psi | 87% | 3081 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,938 psi | 81% | 3179 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 57,595 psi | 90% | 3077 fps | 98.7% |
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% | 52,649 psi | 83% | 2927 fps | 98.5% |
| Accurate 3100 | <<locked>> | 84% | 34,330 psi | 54% | 2621 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 52,533 psi | 82% | 2920 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,567 psi | 64% | 2785 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 94% | 50,082 psi | 78% | 3051 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 48,979 psi | 77% | 2890 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 41,669 psi | 65% | 2825 fps | 95% |
| ADI AR 2213 | <<locked>> | 94% | 48,559 psi | 76% | 2999 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,951 psi | 78% | 2920 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,200 psi | 83% | 2992 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,073 psi | 61% | 2795 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,817 psi | 70% | 2927 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,423 psi | 65% | 2818 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 90% | 42,134 psi | 66% | 2874 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,935 psi | 45% | 2536 fps | 97.1% |
| Alliant Reloder-25 | <<locked>> | 88% | 32,764 psi | 51% | 2664 fps | 95.4% |
| Alliant Reloder-26 | 60.8 gr | 80% | 30,995 psi | 49% | 2651 fps | 95.4% |
| Bofors RP15 | <<locked>> | 92% | 41,553 psi | 65% | 2861 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 50,444 psi | 79% | 2933 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 42,134 psi | 66% | 2874 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 43,990 psi | 69% | 2799 fps | 97% |
| Hodgdon H1000 | <<locked>> | 98% | 44,628 psi | 70% | 2907 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 50,633 psi | 79% | 2946 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 42,438 psi | 67% | 2835 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 80% | 45,136 psi | 71% | 2854 fps | 96.5% |
| Hodgdon H4831 | <<locked>> | 92% | 48,617 psi | 76% | 2940 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 94% | 50,981 psi | 80% | 2986 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,637 psi | 57% | 2680 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 96% | 41,539 psi | 65% | 2940 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 41,307 psi | 65% | 2844 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,456 psi | 43% | 1713 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,503 psi | 81% | 2927 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,664 psi | 84% | 2959 fps | 99.2% |
| IMR 4350 | <<locked>> | 80% | 39,697 psi | 62% | 2723 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,426 psi | 71% | 2828 fps | 97.7% |
| IMR 4831 | <<locked>> | 80% | 38,769 psi | 61% | 2733 fps | 98.6% |
| IMR 4955 Enduron | <<locked>> | 92% | 50,299 psi | 79% | 2936 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 94% | 46,499 psi | 73% | 2969 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 52,040 psi | 82% | 2927 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,120 psi | 68% | 2779 fps | 98.4% |
| Lovex S070 | <<locked>> | 80% | 41,365 psi | 65% | 2759 fps | 97% |
| Lovex S071 | <<locked>> | 88% | 33,504 psi | 53% | 2602 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 52,547 psi | 82% | 2979 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,047 psi | 66% | 2808 fps | 95% |
| Norma MRP | 63.5 gr | 86% | 38,537 psi | 60% | 2822 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 40,118 psi | 63% | 2779 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 80% | 53,272 psi | 83% | 3002 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 46,441 psi | 73% | 2979 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 38,885 psi | 61% | 2762 fps | 97% |
| Ramshot Magnum | <<locked>> | 92% | 38,595 psi | 60% | 2779 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,891 psi | 44% | 1752 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,604 psi | 79% | 2930 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,587 psi | 75% | 2982 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,364 psi | 63% | 2802 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,928 psi | 61% | 2812 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 38,508 psi | 60% | 2854 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 53,795 psi | 84% | 2936 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,587 psi | 75% | 2877 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,137 psi | 72% | 2864 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 86% | 40,727 psi | 64% | 2802 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 43,990 psi | 69% | 2799 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,120 psi | 68% | 2779 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 52,040 psi | 82% | 2927 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,365 psi | 65% | 2759 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,675 psi | 76% | 2930 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,283 psi | 76% | 2769 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,090 psi | 66% | 2720 fps | 97.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 43,120 psi | 68% | 2858 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 47,718 psi | 75% | 2877 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 50,444 psi | 79% | 2913 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 36,724 psi | 58% | 2733 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 38,725 psi | 61% | 2726 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 45,585 psi | 71% | 2799 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,495 psi | 65% | 2776 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 40,814 psi | 64% | 2762 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 52,460 psi | 82% | 2900 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,915 psi | 64% | 2776 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 32,169 psi | 50% | 2618 fps | 97.1% |
| Vihtavuori N560 | 67.9 gr | 92% | 47,761 psi | 75% | 3005 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 98% | 47,166 psi | 74% | 2976 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,567 psi | 64% | 2743 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 42,438 psi | 67% | 2835 fps | 97.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,541 psi | 40% | 2503 fps | 95.8% |
| Winchester Supreme 780 | <<locked>> | 90% | 43,497 psi | 68% | 2825 fps | 95.7% |
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 91 powders for 7 mm WSM loaded with the .284 | 139gr | Sellier & Bellot SPRN. Alliant Reloder-26 delivers the highest muzzle velocity at 3,199 fps; across all powders the maximum-charge window runs from 1,913 fps to 3,199 fps. ADI AR 2217 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.284" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for 7 mm WSM with the .284 | 139gr | Sellier & Bellot SPRN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.