Load Specifications
Load data in caliber 7 mm WSM with .284 | 140gr | Prvi Partizan PSP BT bullet and 88 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.
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 2495 | <<locked>> | 82% | 57,290 psi | 90% | 2920 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,708 psi | 86% | 2940 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,246 psi | 90% | 3048 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 54,230 psi | 85% | 2930 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,187 psi | 86% | 3038 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 55,477 psi | 87% | 3133 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 86% | 57,638 psi | 90% | 3015 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,217 psi | 88% | 3087 fps | 98.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 57,638 psi | 90% | 3143 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 57,319 psi | 90% | 3143 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,085 psi | 86% | 2986 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,288 psi | 87% | 3009 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,057 psi | 88% | 3100 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 57,450 psi | 90% | 3123 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,463 psi | 87% | 3071 fps | 98.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,753 psi | 89% | 3136 fps | 98.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,766 psi | 84% | 3061 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,586 psi | 73% | 2986 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,027 psi | 85% | 3150 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,938 psi | 81% | 3051 fps | 97.7% |
| Bofors RP3 | <<locked>> | 84% | 56,115 psi | 88% | 3002 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,753 psi | 89% | 3136 fps | 98.7% |
| Bofors RP7 | <<locked>> | 88% | 55,347 psi | 87% | 2989 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 84% | 56,318 psi | 88% | 3022 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 57,261 psi | 90% | 3094 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 88% | 56,811 psi | 89% | 3051 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 96% | 54,012 psi | 85% | 3022 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,492 psi | 89% | 3061 fps | 96.7% |
| 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% | 45,527 psi | 71% | 3022 fps | 97.1% |
| Hodgdon Superformance | <<locked>> | 88% | 53,809 psi | 84% | 3071 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,477 psi | 57% | 1890 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,898 psi | 89% | 2992 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,956 psi | 88% | 2976 fps | 99.3% |
| IMR 4350 | <<locked>> | 92% | 56,492 psi | 89% | 3025 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,710 psi | 89% | 3015 fps | 99.3% |
| IMR 4831 | <<locked>> | 92% | 55,724 psi | 87% | 3031 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,739 psi | 89% | 3038 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,564 psi | 87% | 3012 fps | 96.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,100 psi | 86% | 3114 fps | 97.2% |
| Lovex S062 | <<locked>> | 84% | 57,406 psi | 90% | 2989 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,087 psi | 89% | 3012 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 55,114 psi | 86% | 3005 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,601 psi | 75% | 2890 fps | 98.9% |
| Norma 203B | <<locked>> | 82% | 54,592 psi | 86% | 2992 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,479 psi | 90% | 3081 fps | 98.4% |
| Norma MRP | <<locked>> | 98% | 56,536 psi | 89% | 3163 fps | 99.5% |
| Norma URP | <<locked>> | 92% | 57,479 psi | 90% | 3081 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,259 psi | 87% | 3018 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,448 psi | 87% | 3130 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 92% | 56,492 psi | 89% | 3084 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,879 psi | 78% | 2999 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,289 psi | 58% | 1936 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,985 psi | 88% | 3002 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,884 psi | 89% | 3114 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,245 psi | 87% | 3064 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 57,493 psi | 90% | 3153 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,803 psi | 72% | 3018 fps | 98.3% |
| Rottweil R 902 | <<locked>> | 82% | 55,869 psi | 88% | 2953 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,231 psi | 88% | 3002 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,317 psi | 85% | 2999 fps | 97% |
| Rottweil R 905 | <<locked>> | 96% | 54,781 psi | 86% | 3058 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 88% | 55,347 psi | 87% | 2989 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,087 psi | 89% | 3012 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 57,406 psi | 90% | 2989 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,114 psi | 86% | 3005 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 57,653 psi | 90% | 3061 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,710 psi | 89% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,797 psi | 89% | 2966 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,302 psi | 85% | 3051 fps | 98.2% |
| Somchem S355 | <<locked>> | 86% | 55,898 psi | 88% | 2992 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,101 psi | 88% | 2992 fps | 96.6% |
| Somchem S365 | <<locked>> | 94% | 57,145 psi | 90% | 3081 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,405 psi | 87% | 3031 fps | 99% |
| Vihtavuori N135 | <<locked>> | 82% | 56,173 psi | 88% | 2907 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,463 psi | 88% | 2923 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,276 psi | 90% | 2966 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,854 psi | 88% | 3015 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,926 psi | 86% | 3009 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 82% | 54,621 psi | 86% | 2917 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,187 psi | 86% | 3025 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,304 psi | 88% | 3087 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 56,637 psi | 89% | 3153 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,550 psi | 87% | 2979 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 57,522 psi | 90% | 3097 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,356 psi | 77% | 3130 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,550 psi | 87% | 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 2495 | <<locked>> | 80% | 53,766 psi | 84% | 2871 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,271 psi | 80% | 2884 fps | 98.2% |
| Accurate 3100 | <<locked>> | 86% | 35,447 psi | 56% | 2638 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 50,995 psi | 80% | 2877 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,204 psi | 61% | 2743 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 96% | 51,764 psi | 81% | 3068 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 47,877 psi | 75% | 2854 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 43,076 psi | 68% | 2838 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 94% | 47,137 psi | 74% | 2949 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 53,519 psi | 84% | 3084 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,501 psi | 76% | 2881 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,808 psi | 81% | 2949 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,985 psi | 60% | 2753 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,294 psi | 68% | 2884 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 42,946 psi | 67% | 2835 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 43,395 psi | 68% | 2890 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,920 psi | 44% | 2493 fps | 96.4% |
| Alliant Reloder-25 | <<locked>> | 90% | 33,794 psi | 53% | 2680 fps | 95.8% |
| Alliant Reloder-26 | 60.3 gr | 82% | 32,198 psi | 50% | 2674 fps | 96% |
| Bofors RP15 | <<locked>> | 94% | 42,801 psi | 67% | 2874 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 49,066 psi | 77% | 2894 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 43,395 psi | 68% | 2890 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 42,975 psi | 67% | 2759 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 80% | 49,327 psi | 77% | 2904 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 41,046 psi | 64% | 2789 fps | 96.6% |
| Hodgdon H4350 | <<locked>> | 80% | 43,947 psi | 69% | 2812 fps | 96.1% |
| Hodgdon H4831 | <<locked>> | 94% | 50,459 psi | 79% | 2956 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,501 psi | 78% | 2940 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,520 psi | 56% | 2638 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,795 psi | 84% | 2999 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 42,830 psi | 67% | 2956 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 39,958 psi | 63% | 2799 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 43% | 1690 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,328 psi | 79% | 2890 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,475 psi | 82% | 2917 fps | 98.9% |
| IMR 4350 | <<locked>> | 80% | 38,566 psi | 60% | 2680 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,251 psi | 69% | 2785 fps | 97.3% |
| IMR 4831 | <<locked>> | 80% | 37,507 psi | 59% | 2690 fps | 98.2% |
| IMR 4895 | <<locked>> | 80% | 53,142 psi | 83% | 2982 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 49,023 psi | 77% | 2897 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 96% | 48,022 psi | 75% | 2982 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 50,618 psi | 79% | 2884 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,887 psi | 66% | 2736 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 40,147 psi | 63% | 2717 fps | 96.6% |
| Lovex S071 | <<locked>> | 90% | 34,403 psi | 54% | 2612 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 51,140 psi | 80% | 2936 fps | 100% |
| Norma 204 | <<locked>> | 84% | 43,671 psi | 68% | 2828 fps | 95.4% |
| Norma MRP | 61.4 gr | 86% | 37,202 psi | 58% | 2776 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 38,841 psi | 61% | 2736 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 51,808 psi | 81% | 2963 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 48,066 psi | 75% | 2995 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 37,739 psi | 59% | 2720 fps | 96.5% |
| Ramshot Magnum | <<locked>> | 94% | 39,856 psi | 62% | 2792 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,862 psi | 44% | 1732 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,240 psi | 77% | 2887 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,977 psi | 72% | 2940 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,943 psi | 61% | 2759 fps | 98.2% |
| ReloadSwiss RS 70 | 58.3 gr | 80% | 37,753 psi | 59% | 2769 fps | 97.7% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 39,653 psi | 62% | 2871 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 80% | 52,315 psi | 82% | 2897 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,166 psi | 72% | 2838 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 47,790 psi | 75% | 2881 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 88% | 42,018 psi | 66% | 2815 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 42,975 psi | 67% | 2759 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,887 psi | 66% | 2736 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 50,618 psi | 79% | 2884 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,147 psi | 63% | 2717 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,384 psi | 74% | 2894 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,123 psi | 74% | 2733 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,988 psi | 64% | 2677 fps | 96.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 41,640 psi | 65% | 2812 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 46,325 psi | 73% | 2831 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 52,373 psi | 82% | 2930 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 35,346 psi | 55% | 2690 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 39,914 psi | 63% | 2740 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 52,721 psi | 83% | 2858 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,910 psi | 83% | 2871 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,280 psi | 69% | 2759 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,234 psi | 63% | 2736 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 90% | 39,305 psi | 62% | 2717 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 51,213 psi | 80% | 2867 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,769 psi | 62% | 2736 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 30,937 psi | 48% | 2572 fps | 96.5% |
| Vihtavuori N560 | <<locked>> | 94% | 49,458 psi | 78% | 3022 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,436 psi | 62% | 2703 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 41,220 psi | 65% | 2792 fps | 96.7% |
| Winchester StaBALL HD | <<locked>> | 82% | 26,411 psi | 41% | 2526 fps | 96.4% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,018 psi | 66% | 2779 fps | 95.1% |
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 95 powders for 7 mm WSM loaded with the .284 | 140gr | Prvi Partizan PSP BT. Norma MRP delivers the highest muzzle velocity at 3,163 fps; across all powders the maximum-charge window runs from 1,890 fps to 3,163 fps. Accurate 3100 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 51–90 %, 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, ADI AR 2213, ADI AR 2217 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 | Prvi Partizan PSP BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Bofors RP30 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.