Load Specifications
Load data in caliber 7 mm WSM with .284 | 166gr | Peregrine VRG-2 bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and Accurate MAGPRO.
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 3100 | <<locked>> | 96% | 54,795 psi | 86% | 2795 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 56,652 psi | 89% | 2831 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 57,363 psi | 90% | 2946 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 82% | 54,853 psi | 86% | 2746 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 57,551 psi | 90% | 2890 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 96% | 55,216 psi | 87% | 2890 fps | 98.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,122 psi | 72% | 2726 fps | 97.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,625 psi | 64% | 2680 fps | 98.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,012 psi | 85% | 2828 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,912 psi | 88% | 2766 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,609 psi | 90% | 2884 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,984 psi | 86% | 2844 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,087 psi | 89% | 2877 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,911 psi | 86% | 2887 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,869 psi | 88% | 2854 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,532 psi | 81% | 2861 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 56,434 psi | 88% | 2949 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 57,348 psi | 90% | 2854 fps | 96.5% |
| Bofors RP15ᴾ | <<locked>> | 100% | 57,682 psi | 90% | 2927 fps | 99.6% |
| Bofors RP3 | <<locked>> | 82% | 56,826 psi | 89% | 2782 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,500 psi | 74% | 2795 fps | 98% |
| Bofors RP5 | <<locked>> | 96% | 54,911 psi | 86% | 2887 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 55,912 psi | 88% | 2782 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,705 psi | 79% | 2815 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 82% | 56,739 psi | 89% | 2799 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 54,781 psi | 86% | 2831 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 54,186 psi | 85% | 2792 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 94% | 55,405 psi | 87% | 2835 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,259 psi | 85% | 2818 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,143 psi | 85% | 2759 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,401 psi | 79% | 2920 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 86% | 55,303 psi | 87% | 2871 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,840 psi | 58% | 1739 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 57,450 psi | 90% | 2822 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,348 psi | 90% | 2805 fps | 100% |
| IMR 4831 | <<locked>> | 90% | 56,942 psi | 89% | 2822 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,391 psi | 88% | 2815 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 98% | 56,623 psi | 89% | 2927 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 54,389 psi | 85% | 2749 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,767 psi | 87% | 2795 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,054 psi | 82% | 2756 fps | 100% |
| Norma 204 | <<locked>> | 88% | 54,694 psi | 86% | 2822 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 36,143 psi | 57% | 2602 fps | 96.8% |
| Norma MRP | <<locked>> | 94% | 54,665 psi | 86% | 2907 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 55,100 psi | 86% | 2815 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 57,479 psi | 90% | 2949 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 88% | 54,070 psi | 85% | 2822 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,622 psi | 87% | 2884 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,521 psi | 59% | 1778 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,753 psi | 89% | 2792 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,491 psi | 85% | 2835 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,710 psi | 89% | 2854 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,056 psi | 86% | 2884 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,966 psi | 80% | 2920 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 56,971 psi | 89% | 2779 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,376 psi | 87% | 2805 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 94% | 56,420 psi | 88% | 2864 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 86% | 55,912 psi | 88% | 2782 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,389 psi | 85% | 2749 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,767 psi | 87% | 2795 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,882 psi | 86% | 2785 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,101 psi | 89% | 2651 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,246 psi | 90% | 2756 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,956 psi | 88% | 2861 fps | 99.5% |
| Somchem S355 | <<locked>> | 84% | 56,724 psi | 89% | 2772 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,724 psi | 89% | 2795 fps | 98.3% |
| Somchem S365 | <<locked>> | 90% | 55,347 psi | 87% | 2815 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,971 psi | 89% | 2838 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 54,462 psi | 85% | 2697 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,203 psi | 90% | 2808 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 56,304 psi | 88% | 2815 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 88% | 56,057 psi | 88% | 2812 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,389 psi | 85% | 2828 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,650 psi | 86% | 2904 fps | 98.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,012 psi | 85% | 2877 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,623 psi | 89% | 2766 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,071 psi | 86% | 2835 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 57,319 psi | 90% | 2992 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,116 psi | 90% | 2838 fps | 99.5% |
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 3100 | <<locked>> | 80% | 31,488 psi | 49% | 2356 fps | 96.4% |
| Accurate 4350 | <<locked>> | 80% | 42,786 psi | 67% | 2612 fps | 99.9% |
| Accurate MAGPRO | 62.5 gr | 88% | 43,236 psi | 68% | 2700 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 51,532 psi | 81% | 2697 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 35,940 psi | 56% | 2487 fps | 95% |
| ADI AR 2213 | <<locked>> | 88% | 42,018 psi | 66% | 2648 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 96% | 40,190 psi | 63% | 2605 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 94% | 33,402 psi | 52% | 2500 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 36,245 psi | 57% | 2487 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,518 psi | 82% | 2717 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,350 psi | 65% | 2621 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,645 psi | 75% | 2736 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 35,911 psi | 56% | 2484 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 84% | 36,419 psi | 57% | 2536 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,530 psi | 48% | 2392 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 28,442 psi | 45% | 2349 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,967 psi | 52% | 2513 fps | 98.3% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 53,911 psi | 84% | 2799 fps | 95.7% |
| Bofors RP15 | <<locked>> | 86% | 36,114 psi | 57% | 2526 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 53,040 psi | 83% | 2726 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 38,580 psi | 60% | 2618 fps | 95.4% |
| Bofors RP5 | <<locked>> | 84% | 36,419 psi | 57% | 2536 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 46,050 psi | 72% | 2618 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 92% | 38,421 psi | 60% | 2569 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 53,258 psi | 83% | 2749 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,788 psi | 70% | 2661 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 47,572 psi | 75% | 2680 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 86% | 41,945 psi | 66% | 2595 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 88% | 44,092 psi | 69% | 2641 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,986 psi | 61% | 2513 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 36,071 psi | 57% | 2602 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 44,034 psi | 69% | 2684 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,543 psi | 43% | 1555 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,655 psi | 65% | 2552 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,688 psi | 75% | 2648 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 41,031 psi | 64% | 2562 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 41,133 psi | 64% | 2546 fps | 95% |
| IMR 7828 SSC | <<locked>> | 88% | 40,219 psi | 63% | 2621 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 45,107 psi | 71% | 2598 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 43,178 psi | 68% | 2582 fps | 98.8% |
| Lovex S071 | <<locked>> | 82% | 28,935 psi | 45% | 2287 fps | 95.2% |
| Norma 204 | <<locked>> | 80% | 41,582 psi | 65% | 2589 fps | 96.8% |
| Norma 217 | <<locked>> | 98% | 33,663 psi | 53% | 2539 fps | 95.7% |
| Norma MRP | 55.7 gr | 80% | 32,982 psi | 52% | 2480 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 42,264 psi | 66% | 2602 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 39,871 psi | 62% | 2628 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 41,292 psi | 65% | 2598 fps | 99% |
| Ramshot Magnum | <<locked>> | 88% | 35,346 psi | 55% | 2510 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 44% | 1588 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,084 psi | 83% | 2740 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,618 psi | 79% | 2779 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,888 psi | 67% | 2635 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,234 psi | 65% | 2648 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 32,793 psi | 51% | 2513 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 49,850 psi | 78% | 2677 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 40,001 psi | 63% | 2526 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 35,099 psi | 55% | 2464 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 46,050 psi | 72% | 2618 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,107 psi | 71% | 2598 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 43,178 psi | 68% | 2582 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,517 psi | 81% | 2736 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,488 psi | 79% | 2566 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,918 psi | 69% | 2543 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 37,231 psi | 58% | 2516 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 50,024 psi | 78% | 2674 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 43,555 psi | 68% | 2575 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 39,073 psi | 61% | 2559 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,665 psi | 56% | 2451 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 80% | 47,688 psi | 75% | 2598 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,787 psi | 69% | 2598 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 35,273 psi | 55% | 2438 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 43,163 psi | 68% | 2602 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 34,156 psi | 54% | 2464 fps | 99.1% |
| Vihtavuori N560 | 59.9 gr | 86% | 41,249 psi | 65% | 2654 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 92% | 40,930 psi | 64% | 2638 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,888 psi | 67% | 2566 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,005 psi | 71% | 2664 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,905 psi | 42% | 2388 fps | 99.1% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,463 psi | 59% | 2493 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 79 powders for 7 mm WSM loaded with the .284 | 166gr | Peregrine VRG-2. Winchester StaBALL HD delivers the highest muzzle velocity at 2,992 fps; across all powders the maximum-charge window runs from 1,739 fps to 2,992 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 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 166.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Vihtavuori N560, Norma MRP, Accurate MAGPRO rank at the top here: for 7 mm WSM with the .284 | 166gr | Peregrine VRG-2 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.