Load Specifications
Load data in caliber 7 mm WSM with .285 | 139gr | Prvi Partizan SP bullet and 85 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.
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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% | 56,565 psi | 89% | 2992 fps | 99.1% |
| Accurate 3100 | <<locked>> | 98% | 55,796 psi | 87% | 3045 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 56,391 psi | 88% | 2976 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 57,595 psi | 90% | 3094 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 54,273 psi | 85% | 3130 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 84% | 55,854 psi | 88% | 3009 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,679 psi | 86% | 3084 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 98% | 56,173 psi | 88% | 3140 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,725 psi | 61% | 2828 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,985 psi | 89% | 3031 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,985 psi | 89% | 3054 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,723 psi | 86% | 3097 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,956 psi | 88% | 3117 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,273 psi | 85% | 3071 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 55,651 psi | 87% | 3133 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 56,376 psi | 88% | 3114 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,892 psi | 77% | 3048 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 56,913 psi | 89% | 3209 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,534 psi | 85% | 3114 fps | 98.4% |
| Bofors RP3 | <<locked>> | 82% | 54,447 psi | 85% | 2999 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 55,651 psi | 87% | 3133 fps | 98.6% |
| Bofors RP7 | <<locked>> | 88% | 56,956 psi | 89% | 3038 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,095 psi | 75% | 2979 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 82% | 54,520 psi | 85% | 3012 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,724 psi | 87% | 3087 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 86% | 55,085 psi | 86% | 3045 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 96% | 56,275 psi | 88% | 3081 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,969 psi | 86% | 3054 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,969 psi | 86% | 3015 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,674 psi | 75% | 3087 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 88% | 56,231 psi | 88% | 3127 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,666 psi | 57% | 1916 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,259 psi | 87% | 2989 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,682 psi | 90% | 3028 fps | 99.6% |
| IMR 4350 | <<locked>> | 90% | 54,911 psi | 86% | 3018 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,056 psi | 86% | 3009 fps | 99.3% |
| IMR 4831 | <<locked>> | 90% | 54,302 psi | 85% | 3028 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 57,435 psi | 90% | 3064 fps | 97.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 57,595 psi | 90% | 3176 fps | 97.9% |
| Lovex S062 | <<locked>> | 82% | 55,535 psi | 87% | 2982 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,434 psi | 87% | 3009 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 56,913 psi | 89% | 3051 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,748 psi | 78% | 2946 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 56,304 psi | 88% | 3038 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,666 psi | 87% | 3071 fps | 98.3% |
| Norma MRP | <<locked>> | 96% | 55,419 psi | 87% | 3163 fps | 99.5% |
| Norma URP | <<locked>> | 90% | 55,999 psi | 88% | 3074 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,319 psi | 90% | 3068 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,317 psi | 85% | 3130 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 90% | 54,868 psi | 86% | 3074 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,301 psi | 82% | 3058 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,478 psi | 59% | 1962 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,404 psi | 85% | 2995 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,347 psi | 87% | 3107 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 57,653 psi | 90% | 3117 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,869 psi | 88% | 3146 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,124 psi | 75% | 3084 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 82% | 57,392 psi | 90% | 2992 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 54,563 psi | 86% | 2992 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,173 psi | 88% | 3051 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 96% | 57,290 psi | 90% | 3117 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 88% | 56,956 psi | 89% | 3038 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,434 psi | 87% | 3009 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 55,535 psi | 87% | 2982 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,913 psi | 89% | 3051 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,072 psi | 88% | 3054 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,013 psi | 86% | 2871 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,897 psi | 86% | 2956 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,811 psi | 89% | 3110 fps | 98.7% |
| Somchem S355 | <<locked>> | 84% | 54,273 psi | 85% | 2986 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,302 psi | 85% | 2982 fps | 96.4% |
| Somchem S365 | <<locked>> | 92% | 55,970 psi | 88% | 3077 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,215 psi | 85% | 3031 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 86% | 55,593 psi | 87% | 2959 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,447 psi | 85% | 3012 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 57,116 psi | 90% | 3061 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 56,347 psi | 88% | 2959 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 57,174 psi | 90% | 3071 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,274 psi | 87% | 3091 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,448 psi | 87% | 3150 fps | 97% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,140 psi | 80% | 3054 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,056 psi | 85% | 2976 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,999 psi | 88% | 3094 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,837 psi | 83% | 3192 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,273 psi | 85% | 3025 fps | 98.2% |
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% | 52,924 psi | 83% | 2933 fps | 98.6% |
| Accurate 3100 | <<locked>> | 84% | 34,592 psi | 54% | 2628 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 52,910 psi | 83% | 2927 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,886 psi | 64% | 2795 fps | 99% |
| Accurate MAGPRO | <<locked>> | 94% | 50,604 psi | 79% | 3061 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 49,269 psi | 77% | 2897 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 41,930 psi | 66% | 2831 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 94% | 49,023 psi | 77% | 3005 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 98% | 36,376 psi | 57% | 2766 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,256 psi | 79% | 2927 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,534 psi | 84% | 2999 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,378 psi | 62% | 2805 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,165 psi | 71% | 2936 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,858 psi | 66% | 2828 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 90% | 42,351 psi | 66% | 2881 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,182 psi | 46% | 2546 fps | 97.2% |
| Alliant Reloder-25 | <<locked>> | 88% | 33,127 psi | 52% | 2674 fps | 95.7% |
| Alliant Reloder-26 | 61.3 gr | 80% | 31,401 psi | 49% | 2664 fps | 95.7% |
| Bofors RP15 | <<locked>> | 92% | 41,771 psi | 65% | 2867 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 50,836 psi | 80% | 2940 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 42,351 psi | 66% | 2881 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 44,280 psi | 69% | 2805 fps | 97.1% |
| Hodgdon H1000 | <<locked>> | 98% | 45,005 psi | 71% | 2917 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 50,952 psi | 80% | 2949 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 42,743 psi | 67% | 2844 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 80% | 45,426 psi | 71% | 2861 fps | 96.7% |
| Hodgdon H4831 | <<locked>> | 92% | 49,095 psi | 77% | 2953 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,459 psi | 81% | 2995 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,956 psi | 58% | 2687 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 96% | 41,945 psi | 66% | 2953 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 41,771 psi | 65% | 2858 fps | 96.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,412 psi | 43% | 1716 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,851 psi | 81% | 2933 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 54,201 psi | 85% | 2969 fps | 99.2% |
| IMR 4350 | <<locked>> | 80% | 39,972 psi | 63% | 2730 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,716 psi | 72% | 2835 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 39,073 psi | 61% | 2740 fps | 98.7% |
| IMR 4955 Enduron | <<locked>> | 90% | 47,688 psi | 75% | 2890 fps | 95% |
| IMR 7828 SSC | <<locked>> | 94% | 46,963 psi | 74% | 2979 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 52,156 psi | 82% | 2930 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,381 psi | 68% | 2785 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 41,655 psi | 65% | 2766 fps | 97.2% |
| Lovex S071 | <<locked>> | 88% | 33,765 psi | 53% | 2608 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 52,866 psi | 83% | 2986 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,337 psi | 66% | 2818 fps | 95.2% |
| Norma MRP | 63.9 gr | 86% | 38,754 psi | 61% | 2828 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 40,422 psi | 63% | 2785 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 80% | 53,577 psi | 84% | 3009 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 46,891 psi | 73% | 2989 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 39,320 psi | 62% | 2772 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 92% | 38,972 psi | 61% | 2789 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,021 psi | 44% | 1759 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,923 psi | 80% | 2936 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,921 psi | 75% | 2989 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,683 psi | 64% | 2812 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,204 psi | 61% | 2818 fps | 98.2% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 38,827 psi | 61% | 2867 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 80% | 54,157 psi | 85% | 2943 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,935 psi | 75% | 2884 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,398 psi | 73% | 2874 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 86% | 40,988 psi | 64% | 2812 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 44,280 psi | 69% | 2805 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,381 psi | 68% | 2785 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 52,156 psi | 82% | 2930 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,655 psi | 65% | 2766 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,211 psi | 77% | 2940 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,588 psi | 76% | 2776 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,322 psi | 66% | 2726 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 40,625 psi | 64% | 2802 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 48,051 psi | 75% | 2884 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 50,865 psi | 80% | 2923 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 37,043 psi | 58% | 2743 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 39,001 psi | 61% | 2733 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 45,905 psi | 72% | 2805 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,800 psi | 66% | 2785 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 41,060 psi | 64% | 2769 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 52,779 psi | 83% | 2907 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,176 psi | 65% | 2785 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 32,489 psi | 51% | 2628 fps | 97.3% |
| Vihtavuori N560 | 68.4 gr | 92% | 48,225 psi | 76% | 3015 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 98% | 47,630 psi | 75% | 2986 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,828 psi | 64% | 2749 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 42,743 psi | 67% | 2844 fps | 97.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,846 psi | 41% | 2516 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 90% | 43,947 psi | 69% | 2835 fps | 95.9% |
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 .285 | 139gr | Prvi Partizan SP. Alliant Reloder-26 delivers the highest muzzle velocity at 3,209 fps; across all powders the maximum-charge window runs from 1,916 fps to 3,209 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 54–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.285" calls for a 1:16.0 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 .285 | 139gr | Prvi Partizan SP 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.