Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 168gr | Sierra MatchKing bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 54,520 psi | 85% | 2785 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 55,622 psi | 87% | 2812 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 56,028 psi | 88% | 2933 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 92% | 56,927 psi | 89% | 2940 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 90% | 56,391 psi | 88% | 2871 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 54,114 psi | 85% | 2874 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,098 psi | 82% | 2841 fps | 99% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,702 psi | 73% | 2802 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,463 psi | 88% | 2864 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,014 psi | 88% | 2861 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,346 psi | 85% | 2874 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,825 psi | 87% | 2844 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 55,230 psi | 87% | 2907 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 56,115 psi | 88% | 2930 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,550 psi | 87% | 2835 fps | 96.8% |
| Bofors RP15 | <<locked>> | 96% | 57,000 psi | 89% | 2913 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,897 psi | 86% | 2910 fps | 99.4% |
| Bofors RP5 | <<locked>> | 92% | 54,346 psi | 85% | 2874 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 57,566 psi | 90% | 2808 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 57,551 psi | 90% | 2927 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 84% | 57,188 psi | 90% | 2864 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,956 psi | 88% | 2822 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 90% | 54,041 psi | 85% | 2815 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,579 psi | 89% | 2854 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,710 psi | 89% | 2785 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 53,969 psi | 85% | 2979 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 53,722 psi | 84% | 2841 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,376 psi | 59% | 1768 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,753 psi | 87% | 2799 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,535 psi | 87% | 2779 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 56,057 psi | 88% | 2805 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,955 psi | 86% | 2799 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 94% | 55,825 psi | 87% | 2913 fps | 99.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,177 psi | 66% | 2707 fps | 97% |
| Lovex S065 | <<locked>> | 84% | 56,217 psi | 88% | 2776 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,607 psi | 86% | 2779 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 55,767 psi | 87% | 2802 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,840 psi | 89% | 2854 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 42,453 psi | 67% | 2733 fps | 99% |
| Norma MRP | <<locked>> | 90% | 54,302 psi | 85% | 2894 fps | 100% |
| Norma URP | <<locked>> | 86% | 57,653 psi | 90% | 2844 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,797 psi | 89% | 2936 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 86% | 56,507 psi | 89% | 2854 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 54,984 psi | 86% | 2867 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,101 psi | 60% | 1808 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,622 psi | 87% | 2835 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,012 psi | 85% | 2861 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,534 psi | 85% | 2976 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,606 psi | 84% | 2930 fps | 98.3% |
| Rottweil R 904 | <<locked>> | 90% | 57,334 psi | 90% | 2838 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 90% | 55,579 psi | 87% | 2851 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 57,566 psi | 90% | 2808 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,217 psi | 88% | 2776 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,607 psi | 86% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,216 psi | 87% | 2733 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,158 psi | 86% | 2848 fps | 99.7% |
| Somchem S361 | <<locked>> | 88% | 55,361 psi | 87% | 2782 fps | 98.6% |
| Somchem S365 | <<locked>> | 86% | 54,621 psi | 86% | 2795 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,072 psi | 88% | 2825 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 56,188 psi | 88% | 2717 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,680 psi | 87% | 2785 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 55,434 psi | 87% | 2802 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 54,795 psi | 86% | 2789 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,476 psi | 85% | 2822 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,027 psi | 85% | 2887 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 96% | 54,099 psi | 85% | 2874 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,563 psi | 86% | 2930 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,969 psi | 86% | 2740 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 57,421 psi | 90% | 2867 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 53,998 psi | 85% | 2927 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,753 psi | 87% | 2818 fps | 99.7% |
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% | 36,419 psi | 57% | 2461 fps | 98.4% |
| Accurate 4350 | <<locked>> | 80% | 48,573 psi | 76% | 2703 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 39,494 psi | 62% | 2621 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 84% | 42,888 psi | 67% | 2684 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 40,408 psi | 63% | 2582 fps | 97.2% |
| ADI AR 2213 | <<locked>> | 82% | 38,580 psi | 60% | 2572 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 92% | 39,914 psi | 63% | 2602 fps | 96% |
| ADI AR 2225 | <<locked>> | 88% | 31,647 psi | 50% | 2448 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,485 psi | 73% | 2707 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,437 psi | 63% | 2579 fps | 97.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,419 psi | 57% | 2526 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,114 psi | 55% | 2487 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,400 psi | 48% | 2402 fps | 97.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,711 psi | 61% | 2631 fps | 99.8% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 49,211 psi | 77% | 2726 fps | 95.3% |
| Bofors RP15 | <<locked>> | 82% | 36,158 psi | 57% | 2520 fps | 95.8% |
| Bofors RP30 | <<locked>> | 88% | 36,492 psi | 57% | 2559 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 36,419 psi | 57% | 2526 fps | 96% |
| Bofors RP7 | <<locked>> | 80% | 50,937 psi | 80% | 2703 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 86% | 35,694 psi | 56% | 2503 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 50,038 psi | 78% | 2753 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 52,634 psi | 82% | 2766 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 82% | 41,234 psi | 65% | 2582 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 82% | 40,466 psi | 63% | 2566 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,801 psi | 69% | 2589 fps | 100% |
| Hodgdon Retumbo | 61 gr | 84% | 33,823 psi | 53% | 2539 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 49,937 psi | 78% | 2782 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,978 psi | 44% | 1578 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,209 psi | 72% | 2638 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,054 psi | 82% | 2723 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 46,021 psi | 72% | 2644 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,161 psi | 63% | 2523 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 84% | 39,871 psi | 62% | 2615 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 96% | 36,985 psi | 58% | 2589 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 49,821 psi | 78% | 2677 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,124 psi | 75% | 2671 fps | 99.7% |
| Lovex S071 | <<locked>> | 80% | 31,473 psi | 49% | 2343 fps | 96.9% |
| Norma 204 | <<locked>> | 80% | 46,398 psi | 73% | 2680 fps | 98.4% |
| Norma 217 | <<locked>> | 92% | 32,460 psi | 51% | 2497 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 38,029 psi | 60% | 2589 fps | 97.9% |
| Norma URP | <<locked>> | 80% | 47,514 psi | 74% | 2687 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 36,767 psi | 58% | 2556 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 46,296 psi | 73% | 2687 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 32,924 psi | 52% | 2444 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,689 psi | 45% | 1617 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,602 psi | 76% | 2726 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,746 psi | 73% | 2743 fps | 100% |
| ReloadSwiss RS 76 | 63.8 gr | 82% | 30,748 psi | 48% | 2451 fps | 95.1% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 42,714 psi | 67% | 2730 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 41,713 psi | 65% | 2566 fps | 96.4% |
| Rottweil R 905 | <<locked>> | 80% | 39,914 psi | 63% | 2569 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 80% | 50,937 psi | 80% | 2703 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,821 psi | 78% | 2677 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,124 psi | 75% | 2671 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,762 psi | 76% | 2631 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,581 psi | 62% | 2562 fps | 97.1% |
| Somchem S361 | <<locked>> | 80% | 42,409 psi | 66% | 2552 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 44,686 psi | 70% | 2644 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,480 psi | 63% | 2549 fps | 98.1% |
| Vihtavuori N150 | <<locked>> | 80% | 52,808 psi | 83% | 2671 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,863 psi | 77% | 2680 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,041 psi | 55% | 2428 fps | 96.2% |
| Vihtavuori N550 | <<locked>> | 80% | 48,298 psi | 76% | 2687 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,320 psi | 62% | 2562 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 40,872 psi | 64% | 2641 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 86% | 38,653 psi | 61% | 2579 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 94% | 44,193 psi | 69% | 2743 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,935 psi | 75% | 2641 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,256 psi | 79% | 2753 fps | 99.8% |
| Winchester StaBALL HD | 59.7 gr | 80% | 31,299 psi | 49% | 2513 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,869 psi | 58% | 2474 fps | 96.1% |
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 71 powders for 7 mm Weath. Mag. loaded with the .284 | 168gr | Sierra MatchKing. Hodgdon Retumbo delivers the highest muzzle velocity at 2,979 fps; across all powders the maximum-charge window runs from 1,768 fps to 2,979 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Bofors RP30 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. Hodgdon Retumbo, ReloadSwiss RS 76, Winchester StaBALL HD rank at the top here: for 7 mm Weath. Mag. with the .284 | 168gr | Sierra MatchKing 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.