Load Specifications
Load data in caliber 7 mm WSM with .284 | 160gr | NorthFork Bonded Core bullet and 83 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Alliant Reloder-26 and Norma MRP.
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% | 57,246 psi | 90% | 2799 fps | 99.6% |
| Accurate 3100 | <<locked>> | 98% | 56,724 psi | 89% | 2858 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 57,203 psi | 90% | 2772 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,824 psi | 86% | 2841 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 55,303 psi | 87% | 2949 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 84% | 56,724 psi | 89% | 2808 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,637 psi | 87% | 2897 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 98% | 56,913 psi | 89% | 2949 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,411 psi | 70% | 2720 fps | 96% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,392 psi | 62% | 2680 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,346 psi | 85% | 2782 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,680 psi | 87% | 2900 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,087 psi | 89% | 2917 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,027 psi | 86% | 2884 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,391 psi | 88% | 2946 fps | 99.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,261 psi | 90% | 2917 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,617 psi | 78% | 2867 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,722 psi | 84% | 2953 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,303 psi | 87% | 2927 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 55,361 psi | 87% | 2799 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,426 psi | 71% | 2792 fps | 97% |
| Bofors RP5 | <<locked>> | 98% | 56,391 psi | 88% | 2946 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 54,534 psi | 85% | 2792 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,037 psi | 77% | 2812 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 82% | 55,535 psi | 87% | 2818 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,753 psi | 89% | 2897 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 86% | 56,057 psi | 88% | 2854 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 96% | 57,072 psi | 89% | 2890 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,898 psi | 88% | 2874 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,086 psi | 88% | 2822 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,588 psi | 76% | 2920 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 88% | 57,334 psi | 90% | 2940 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,854 psi | 58% | 1759 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,086 psi | 88% | 2789 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,680 psi | 87% | 2828 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,883 psi | 88% | 2815 fps | 99.8% |
| IMR 4831 | <<locked>> | 90% | 55,187 psi | 86% | 2835 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,810 psi | 86% | 2822 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 98% | 54,520 psi | 85% | 2927 fps | 98.2% |
| Lovex S062 | <<locked>> | 82% | 56,434 psi | 88% | 2779 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,463 psi | 88% | 2815 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,447 psi | 85% | 2808 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,589 psi | 79% | 2769 fps | 99.8% |
| Norma 203B | <<locked>> | 82% | 57,305 psi | 90% | 2838 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,478 psi | 89% | 2884 fps | 99.1% |
| Norma MRP | <<locked>> | 96% | 56,449 psi | 88% | 2972 fps | 99.9% |
| Norma URP | <<locked>> | 90% | 57,043 psi | 89% | 2881 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,230 psi | 87% | 2946 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 90% | 55,695 psi | 87% | 2884 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,272 psi | 83% | 2884 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,550 psi | 59% | 1801 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,332 psi | 87% | 2805 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,434 psi | 88% | 2904 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,882 psi | 86% | 2867 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,739 psi | 89% | 2949 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,776 psi | 76% | 2913 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 84% | 55,492 psi | 87% | 2795 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,217 psi | 90% | 2864 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 94% | 54,578 psi | 86% | 2871 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 86% | 54,534 psi | 85% | 2792 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,463 psi | 88% | 2815 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,434 psi | 88% | 2779 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,447 psi | 85% | 2808 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,014 psi | 89% | 2854 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,796 psi | 87% | 2674 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,666 psi | 87% | 2766 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,128 psi | 85% | 2867 fps | 99.1% |
| Somchem S355 | <<locked>> | 84% | 55,274 psi | 87% | 2789 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,056 psi | 86% | 2802 fps | 97.5% |
| Somchem S365 | <<locked>> | 92% | 57,014 psi | 89% | 2881 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,114 psi | 86% | 2848 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 86% | 56,521 psi | 89% | 2762 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,332 psi | 87% | 2818 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,346 psi | 85% | 2822 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 57,290 psi | 90% | 2759 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,650 psi | 86% | 2828 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,188 psi | 88% | 2894 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,420 psi | 88% | 2966 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,866 psi | 81% | 2877 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,853 psi | 86% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,985 psi | 89% | 2900 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,041 psi | 85% | 2999 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,114 psi | 86% | 2841 fps | 99% |
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% | 53,795 psi | 84% | 2746 fps | 99.3% |
| Accurate 3100 | <<locked>> | 80% | 30,966 psi | 49% | 2369 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 53,911 psi | 84% | 2726 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,814 psi | 66% | 2625 fps | 99.7% |
| Accurate MAGPRO | 63.8 gr | 92% | 47,906 psi | 75% | 2825 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 50,256 psi | 79% | 2710 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,059 psi | 63% | 2608 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 90% | 43,700 psi | 68% | 2713 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 98% | 41,568 psi | 65% | 2657 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 34,751 psi | 54% | 2562 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,010 psi | 80% | 2730 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,147 psi | 63% | 2631 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,948 psi | 72% | 2749 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,434 psi | 59% | 2549 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 86% | 37,782 psi | 59% | 2598 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,863 psi | 47% | 2402 fps | 98.6% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,660 psi | 46% | 2411 fps | 95.4% |
| Alliant Reloder-26 | 56.1 gr | 80% | 32,053 psi | 50% | 2520 fps | 97.5% |
| Bofors RP15 | <<locked>> | 88% | 37,492 psi | 59% | 2589 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 51,909 psi | 81% | 2749 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 39,740 psi | 62% | 2674 fps | 95.2% |
| Bofors RP5 | <<locked>> | 86% | 37,782 psi | 59% | 2598 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 45,092 psi | 71% | 2631 fps | 98.2% |
| Hodgdon H1000 | <<locked>> | 94% | 39,943 psi | 63% | 2628 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 51,866 psi | 81% | 2762 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,671 psi | 68% | 2674 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 80% | 46,383 psi | 73% | 2690 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 90% | 46,528 psi | 73% | 2717 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 90% | 45,832 psi | 72% | 2703 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,884 psi | 59% | 2523 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,550 psi | 59% | 2667 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 42,656 psi | 67% | 2690 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,572 psi | 43% | 1572 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,910 psi | 83% | 2743 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,669 psi | 64% | 2562 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,572 psi | 73% | 2661 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 40,074 psi | 63% | 2579 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,455 psi | 71% | 2661 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 90% | 41,829 psi | 66% | 2687 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 53,243 psi | 83% | 2736 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,179 psi | 69% | 2612 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 42,293 psi | 66% | 2595 fps | 98.3% |
| Lovex S071 | <<locked>> | 84% | 30,313 psi | 48% | 2352 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 53,809 psi | 84% | 2789 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,364 psi | 63% | 2592 fps | 95.8% |
| Norma MRP | 55.8 gr | 82% | 34,447 psi | 54% | 2546 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 41,191 psi | 65% | 2615 fps | 99.5% |
| Ramshot Grand | <<locked>> | 90% | 41,539 psi | 65% | 2694 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 40,059 psi | 63% | 2605 fps | 98.3% |
| Ramshot Magnum | <<locked>> | 90% | 36,941 psi | 58% | 2572 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,065 psi | 44% | 1608 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,750 psi | 81% | 2749 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,762 psi | 76% | 2795 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,626 psi | 65% | 2644 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,030 psi | 63% | 2657 fps | 99.3% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,316 psi | 54% | 2582 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 48,747 psi | 76% | 2697 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 41,481 psi | 65% | 2589 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 82% | 36,637 psi | 57% | 2533 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 45,092 psi | 71% | 2631 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,179 psi | 69% | 2612 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 53,243 psi | 83% | 2736 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,293 psi | 66% | 2595 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,009 psi | 78% | 2749 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,530 psi | 78% | 2589 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,105 psi | 68% | 2559 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,812 psi | 61% | 2585 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 48,936 psi | 77% | 2694 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,310 psi | 71% | 2638 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 37,927 psi | 59% | 2572 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,940 psi | 55% | 2464 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 46,615 psi | 73% | 2618 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,656 psi | 67% | 2612 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 36,666 psi | 57% | 2500 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 53,621 psi | 84% | 2710 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,989 psi | 66% | 2612 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 33,344 psi | 52% | 2477 fps | 98.6% |
| Vihtavuori N560 | <<locked>> | 90% | 45,876 psi | 72% | 2782 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 94% | 42,337 psi | 66% | 2700 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,698 psi | 65% | 2579 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,671 psi | 68% | 2674 fps | 98.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,382 psi | 41% | 2395 fps | 98.3% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,972 psi | 61% | 2552 fps | 95.6% |
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 | 160gr | NorthFork Bonded Core. Winchester StaBALL HD delivers the highest muzzle velocity at 2,999 fps; across all powders the maximum-charge window runs from 1,759 fps to 2,999 fps. ADI AR 2217 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 55–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:10.0 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. Accurate MAGPRO, Alliant Reloder-26, Norma MRP rank at the top here: for 7 mm WSM with the .284 | 160gr | NorthFork Bonded Core they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, ReloadSwiss RS 80, Vihtavuori N170 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.