Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 170gr | SUS-TAC HPT bullet and 80 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate High Country, Alliant Reloder-26 and Winchester StaBALL HD.
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% | 57,246 psi | 90% | 2789 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,259 psi | 87% | 2772 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 54,868 psi | 86% | 2884 fps | 99% |
| Accurate MAGPRO | <<locked>> | 94% | 55,985 psi | 88% | 2890 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 82% | 56,362 psi | 88% | 2730 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,753 psi | 87% | 2828 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 96% | 57,174 psi | 90% | 2887 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,950 psi | 75% | 2730 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,670 psi | 67% | 2694 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 56,144 psi | 88% | 2825 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 56,144 psi | 88% | 2825 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,696 psi | 90% | 2753 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,101 psi | 88% | 2825 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 57,305 psi | 90% | 2838 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,448 psi | 87% | 2818 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 57,029 psi | 89% | 2881 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,723 psi | 86% | 2802 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,664 psi | 84% | 2858 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,868 psi | 86% | 2890 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 55,448 psi | 87% | 2792 fps | 96.3% |
| Bofors RP15 | <<locked>> | 98% | 56,173 psi | 88% | 2867 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,777 psi | 78% | 2799 fps | 98.6% |
| Bofors RP5 | <<locked>> | 96% | 57,029 psi | 89% | 2881 fps | 99.7% |
| Bofors RP7 | <<locked>> | 86% | 57,638 psi | 90% | 2772 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,881 psi | 83% | 2818 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 86% | 56,971 psi | 89% | 2828 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 55,869 psi | 88% | 2779 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 94% | 57,276 psi | 90% | 2828 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,144 psi | 88% | 2812 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,376 psi | 88% | 2749 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,750 psi | 83% | 2927 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 57,334 psi | 90% | 2864 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,115 psi | 58% | 1722 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,666 psi | 87% | 2759 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,695 psi | 87% | 2743 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 55,434 psi | 87% | 2762 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,650 psi | 86% | 2756 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 54,969 psi | 86% | 2864 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 56,159 psi | 88% | 2740 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,273 psi | 85% | 2736 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,723 psi | 86% | 2756 fps | 100% |
| Norma 204 | <<locked>> | 88% | 56,507 psi | 89% | 2812 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 38,232 psi | 60% | 2618 fps | 97.7% |
| Norma MRP | <<locked>> | 94% | 56,913 psi | 89% | 2904 fps | 100% |
| Norma URP | <<locked>> | 88% | 57,305 psi | 90% | 2808 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 55,782 psi | 87% | 2887 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 88% | 55,970 psi | 88% | 2812 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 53,809 psi | 84% | 2822 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,855 psi | 59% | 1762 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 56,811 psi | 89% | 2825 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,071 psi | 86% | 2795 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 57,145 psi | 90% | 2877 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,272 psi | 83% | 2923 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,182 psi | 76% | 2808 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 82% | 55,463 psi | 87% | 2720 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,130 psi | 90% | 2799 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 92% | 54,824 psi | 86% | 2805 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 57,638 psi | 90% | 2772 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,159 psi | 88% | 2740 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,273 psi | 85% | 2736 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,956 psi | 89% | 2776 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,317 psi | 87% | 2592 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,521 psi | 87% | 2697 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,375 psi | 85% | 2802 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 55,129 psi | 86% | 2713 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,172 psi | 86% | 2740 fps | 98.2% |
| Somchem S365 | <<locked>> | 90% | 57,537 psi | 90% | 2805 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,288 psi | 87% | 2779 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 56,260 psi | 88% | 2684 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,521 psi | 87% | 2749 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,752 psi | 86% | 2759 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 54,563 psi | 86% | 2753 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 57,014 psi | 89% | 2828 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 56,797 psi | 89% | 2900 fps | 98.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,420 psi | 88% | 2877 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,458 psi | 78% | 2815 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,737 psi | 86% | 2707 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 56,971 psi | 89% | 2828 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 55,782 psi | 87% | 2933 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,143 psi | 86% | 2776 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% | 33,620 psi | 53% | 2372 fps | 97.4% |
| Accurate 4350 | <<locked>> | 80% | 45,136 psi | 71% | 2615 fps | 100% |
| Accurate High Country | 57.1 gr | 82% | 38,914 psi | 61% | 2582 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 88% | 45,237 psi | 71% | 2703 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 53,026 psi | 83% | 2680 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 37,623 psi | 59% | 2493 fps | 96% |
| ADI AR 2213 | <<locked>> | 86% | 40,959 psi | 64% | 2595 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 94% | 39,262 psi | 62% | 2552 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 90% | 31,038 psi | 49% | 2402 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,000 psi | 60% | 2493 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,000 psi | 60% | 2493 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,230 psi | 85% | 2703 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,221 psi | 68% | 2621 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,777 psi | 78% | 2733 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,666 psi | 59% | 2490 fps | 96% |
| Alliant Reloder-22 | <<locked>> | 82% | 35,781 psi | 56% | 2487 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,198 psi | 50% | 2398 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,137 psi | 44% | 2310 fps | 95.6% |
| Alliant Reloder-26 | 57.4 gr | 80% | 35,070 psi | 55% | 2530 fps | 99.1% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 52,156 psi | 82% | 2736 fps | 95.5% |
| Bofors RP15 | <<locked>> | 84% | 35,505 psi | 56% | 2477 fps | 95.2% |
| Bofors RP30 | <<locked>> | 92% | 38,058 psi | 60% | 2572 fps | 95.5% |
| Bofors RP5 | <<locked>> | 82% | 35,781 psi | 56% | 2487 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 47,892 psi | 75% | 2618 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 37,594 psi | 59% | 2520 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 46,760 psi | 73% | 2661 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 49,124 psi | 77% | 2671 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 43,845 psi | 69% | 2602 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 86% | 42,975 psi | 67% | 2585 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,669 psi | 64% | 2507 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 35,491 psi | 56% | 2556 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 46,093 psi | 72% | 2684 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,804 psi | 44% | 1539 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,381 psi | 68% | 2552 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,124 psi | 77% | 2638 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 42,859 psi | 67% | 2562 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,612 psi | 67% | 2543 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 86% | 39,320 psi | 62% | 2569 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 46,775 psi | 73% | 2592 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 45,136 psi | 71% | 2585 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 29,008 psi | 45% | 2257 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 43,192 psi | 68% | 2585 fps | 97.4% |
| Norma 217 | <<locked>> | 96% | 33,591 psi | 53% | 2507 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 34,911 psi | 55% | 2497 fps | 96.7% |
| Norma URP | <<locked>> | 80% | 44,266 psi | 69% | 2602 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 39,044 psi | 61% | 2579 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 43,004 psi | 67% | 2598 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 86% | 34,780 psi | 55% | 2464 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,326 psi | 44% | 1572 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,866 psi | 83% | 2772 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,875 psi | 70% | 2631 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,960 psi | 67% | 2648 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,314 psi | 51% | 2470 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 44,570 psi | 70% | 2740 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 52,054 psi | 82% | 2671 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 38,972 psi | 61% | 2474 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 80% | 36,985 psi | 58% | 2474 fps | 96% |
| Rottweil R 907 | <<locked>> | 80% | 47,892 psi | 75% | 2618 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,775 psi | 73% | 2592 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 45,136 psi | 71% | 2585 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,272 psi | 83% | 2726 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,199 psi | 82% | 2552 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,788 psi | 72% | 2543 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,651 psi | 57% | 2470 fps | 95.9% |
| Somchem S355 | <<locked>> | 80% | 51,808 psi | 81% | 2664 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 42,380 psi | 66% | 2520 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 41,220 psi | 65% | 2562 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,391 psi | 59% | 2457 fps | 97% |
| Vihtavuori N150 | <<locked>> | 80% | 49,632 psi | 78% | 2595 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,701 psi | 72% | 2595 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 34,679 psi | 54% | 2392 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 44,918 psi | 70% | 2598 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,114 psi | 57% | 2470 fps | 99.6% |
| Vihtavuori N560 | <<locked>> | 84% | 40,408 psi | 63% | 2602 fps | 95% |
| Vihtavuori N565 | <<locked>> | 90% | 40,335 psi | 63% | 2592 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 98% | 46,079 psi | 72% | 2753 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,556 psi | 70% | 2559 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,760 psi | 73% | 2661 fps | 99.4% |
| Winchester StaBALL HD | 55.1 gr | 80% | 28,558 psi | 45% | 2415 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 36,666 psi | 57% | 2441 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 80 powders for 7 mm Weath. Mag. loaded with the .284 | 170gr | SUS-TAC HPT. Winchester StaBALL HD delivers the highest muzzle velocity at 2,933 fps; across all powders the maximum-charge window runs from 1,722 fps to 2,933 fps. ADI AR 2217 gives the best case fill at 100 %, and 80 of the 80 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.284" calls for a 1:7.5 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. Accurate High Country, Alliant Reloder-26, Winchester StaBALL HD rank at the top here: for 7 mm Weath. Mag. with the .284 | 170gr | SUS-TAC HPT 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.