Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 165gr | Sierra Tipped GameKing bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 55,143 psi | 86% | 2812 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,492 psi | 89% | 2841 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 56,608 psi | 89% | 2959 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 94% | 57,479 psi | 90% | 2963 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 82% | 57,290 psi | 90% | 2792 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,116 psi | 90% | 2894 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 54,897 psi | 86% | 2900 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,182 psi | 77% | 2799 fps | 98.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,787 psi | 69% | 2759 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 57,435 psi | 90% | 2894 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,377 psi | 90% | 2894 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,694 psi | 86% | 2851 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,724 psi | 89% | 2887 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,940 psi | 86% | 2897 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,057 psi | 88% | 2867 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,419 psi | 87% | 2930 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,594 psi | 89% | 2959 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,637 psi | 89% | 2861 fps | 96.5% |
| Bofors RP15 | <<locked>> | 98% | 57,508 psi | 90% | 2936 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,459 psi | 81% | 2871 fps | 98.7% |
| Bofors RP5 | <<locked>> | 94% | 54,940 psi | 86% | 2897 fps | 99.5% |
| Bofors RP7 | <<locked>> | 84% | 55,201 psi | 87% | 2785 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,128 psi | 85% | 2884 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 84% | 54,389 psi | 85% | 2838 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 57,014 psi | 89% | 2848 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 54,868 psi | 86% | 2841 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,537 psi | 90% | 2881 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,493 psi | 90% | 2815 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,157 psi | 85% | 2999 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 54,781 psi | 86% | 2874 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,115 psi | 58% | 1765 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,652 psi | 89% | 2825 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,652 psi | 89% | 2808 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 56,811 psi | 89% | 2831 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,840 psi | 88% | 2822 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 96% | 56,608 psi | 89% | 2940 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 57,334 psi | 90% | 2805 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,361 psi | 87% | 2802 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,231 psi | 88% | 2825 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,012 psi | 85% | 2825 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 39,494 psi | 62% | 2687 fps | 98% |
| Norma MRP | <<locked>> | 92% | 54,795 psi | 86% | 2920 fps | 100% |
| Norma URP | <<locked>> | 86% | 54,766 psi | 86% | 2818 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 57,392 psi | 90% | 2963 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 57,348 psi | 90% | 2881 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,405 psi | 87% | 2890 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,043 psi | 60% | 1808 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,550 psi | 89% | 2864 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,708 psi | 86% | 2890 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,042 psi | 86% | 2999 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,864 psi | 78% | 2881 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 82% | 56,681 psi | 89% | 2785 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,810 psi | 86% | 2812 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 92% | 56,231 psi | 88% | 2874 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 55,201 psi | 87% | 2785 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,334 psi | 90% | 2805 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,361 psi | 87% | 2802 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,376 psi | 88% | 2657 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,492 psi | 89% | 2762 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,796 psi | 87% | 2871 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 56,318 psi | 88% | 2779 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,318 psi | 88% | 2805 fps | 98.4% |
| Somchem S365 | <<locked>> | 88% | 55,114 psi | 86% | 2822 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,782 psi | 89% | 2848 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 57,537 psi | 90% | 2749 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,652 psi | 89% | 2815 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,318 psi | 88% | 2828 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 55,825 psi | 87% | 2818 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,766 psi | 86% | 2844 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,665 psi | 86% | 2913 fps | 98.4% |
| Vihtavuori N565 | <<locked>> | 98% | 54,288 psi | 85% | 2890 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,082 psi | 80% | 2887 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,217 psi | 88% | 2776 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,665 psi | 86% | 2841 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 53,490 psi | 84% | 2946 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,739 psi | 89% | 2844 fps | 99.6% |
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% | 34,418 psi | 54% | 2431 fps | 97.5% |
| Accurate 4350 | <<locked>> | 80% | 46,093 psi | 72% | 2677 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 39,972 psi | 63% | 2648 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 86% | 43,439 psi | 68% | 2710 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 54,012 psi | 85% | 2746 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,435 psi | 60% | 2552 fps | 96.1% |
| ADI AR 2213 | <<locked>> | 86% | 41,829 psi | 66% | 2657 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 94% | 40,393 psi | 63% | 2625 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 90% | 31,749 psi | 50% | 2461 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,783 psi | 61% | 2556 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,048 psi | 69% | 2680 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,879 psi | 80% | 2795 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,435 psi | 60% | 2549 fps | 96.2% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,666 psi | 57% | 2549 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,054 psi | 52% | 2457 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,790 psi | 45% | 2365 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,056 psi | 56% | 2592 fps | 99.2% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,154 psi | 79% | 2749 fps | 95% |
| Bofors RP15 | <<locked>> | 84% | 36,550 psi | 57% | 2543 fps | 95.5% |
| Bofors RP30 | <<locked>> | 92% | 39,189 psi | 61% | 2635 fps | 95.8% |
| Bofors RP5 | <<locked>> | 82% | 36,666 psi | 57% | 2549 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 48,805 psi | 76% | 2680 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 90% | 38,609 psi | 61% | 2585 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 47,790 psi | 75% | 2726 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 50,198 psi | 79% | 2740 fps | 99% |
| Hodgdon H4831 | <<locked>> | 84% | 41,829 psi | 66% | 2605 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,874 psi | 69% | 2648 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,698 psi | 65% | 2569 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,127 psi | 53% | 2559 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 47,268 psi | 74% | 2749 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,818 psi | 44% | 1575 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,179 psi | 69% | 2615 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,980 psi | 78% | 2703 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 43,758 psi | 69% | 2621 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 40,901 psi | 64% | 2552 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 86% | 40,234 psi | 63% | 2635 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 47,674 psi | 75% | 2654 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 46,006 psi | 72% | 2648 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 29,733 psi | 47% | 2313 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 44,106 psi | 69% | 2648 fps | 97.6% |
| Norma 217 | <<locked>> | 94% | 32,430 psi | 51% | 2510 fps | 95.1% |
| Norma MRP | 58.2 gr | 80% | 35,781 psi | 56% | 2556 fps | 96.9% |
| Norma URP | <<locked>> | 80% | 45,208 psi | 71% | 2664 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 40,045 psi | 63% | 2644 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 43,947 psi | 69% | 2661 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 84% | 33,141 psi | 52% | 2461 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,514 psi | 45% | 1617 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,064 psi | 72% | 2700 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,048 psi | 69% | 2713 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,344 psi | 52% | 2536 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,757 psi | 67% | 2743 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 53,098 psi | 83% | 2736 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 39,784 psi | 62% | 2536 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 80% | 37,811 psi | 59% | 2536 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 80% | 48,805 psi | 76% | 2680 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,674 psi | 75% | 2654 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 46,006 psi | 72% | 2648 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,069 psi | 83% | 2615 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,557 psi | 73% | 2602 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,478 psi | 59% | 2530 fps | 96% |
| Somchem S355 | <<locked>> | 80% | 52,852 psi | 83% | 2730 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 43,134 psi | 68% | 2579 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 42,206 psi | 66% | 2621 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,319 psi | 60% | 2516 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 80% | 50,560 psi | 79% | 2654 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,586 psi | 73% | 2657 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 35,491 psi | 56% | 2451 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 45,934 psi | 72% | 2661 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,057 psi | 58% | 2533 fps | 99.6% |
| Vihtavuori N560 | 61.1 gr | 84% | 41,321 psi | 65% | 2664 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 90% | 41,510 psi | 65% | 2657 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 96% | 44,193 psi | 69% | 2756 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,527 psi | 71% | 2618 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,790 psi | 75% | 2726 fps | 99.5% |
| Winchester StaBALL HD | 57.6 gr | 80% | 29,298 psi | 46% | 2470 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,478 psi | 59% | 2500 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 76 powders for 7 mm Weath. Mag. loaded with the .284 | 165gr | Sierra Tipped GameKing. Hodgdon Retumbo delivers the highest muzzle velocity at 2,999 fps; across all powders the maximum-charge window runs from 1,765 fps to 2,999 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 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 165.0 gr projectile in 0.284" calls for a 1:9.5 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. Winchester StaBALL HD, Vihtavuori N560, Norma MRP rank at the top here: for 7 mm Weath. Mag. with the .284 | 165gr | Sierra Tipped GameKing 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.