Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 175gr | Barnes Solid RN bullet and 73 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% | 55,158 psi | 86% | 2736 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,231 psi | 88% | 2759 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 56,826 psi | 89% | 2887 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 92% | 57,609 psi | 90% | 2890 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 90% | 56,913 psi | 89% | 2818 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 54,795 psi | 86% | 2828 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,750 psi | 83% | 2795 fps | 99.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,340 psi | 74% | 2762 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 57,232 psi | 90% | 2818 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 57,406 psi | 90% | 2812 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,550 psi | 89% | 2812 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,042 psi | 86% | 2825 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,550 psi | 89% | 2792 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 55,941 psi | 88% | 2858 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,072 psi | 89% | 2884 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,260 psi | 88% | 2795 fps | 97.3% |
| Bofors RP15 | <<locked>> | 94% | 54,244 psi | 85% | 2812 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 55,666 psi | 87% | 2864 fps | 99.6% |
| Bofors RP5 | <<locked>> | 92% | 55,042 psi | 86% | 2825 fps | 99.8% |
| Bofors RP7 | <<locked>> | 82% | 54,549 psi | 85% | 2707 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 98% | 54,215 psi | 85% | 2822 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 82% | 54,099 psi | 85% | 2759 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 56,710 psi | 89% | 2772 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 54,621 psi | 86% | 2769 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 57,232 psi | 90% | 2808 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 57,406 psi | 90% | 2733 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,708 psi | 86% | 2933 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,331 psi | 85% | 2795 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,376 psi | 59% | 1726 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,318 psi | 88% | 2749 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,927 psi | 88% | 2726 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 56,695 psi | 89% | 2753 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,448 psi | 87% | 2749 fps | 99% |
| IMR 7828 SSC | <<locked>> | 94% | 56,623 psi | 89% | 2864 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,743 psi | 67% | 2667 fps | 97.5% |
| Lovex S065 | <<locked>> | 84% | 56,695 psi | 89% | 2723 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,114 psi | 86% | 2726 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 56,463 psi | 88% | 2753 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,363 psi | 90% | 2805 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 43,105 psi | 68% | 2694 fps | 99.3% |
| Norma MRP | <<locked>> | 90% | 55,042 psi | 86% | 2844 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,694 psi | 86% | 2743 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 57,479 psi | 90% | 2887 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 86% | 56,985 psi | 89% | 2802 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 55,854 psi | 88% | 2822 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,130 psi | 60% | 1765 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 56,376 psi | 88% | 2782 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,592 psi | 86% | 2808 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 55,521 psi | 87% | 2930 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 54,491 psi | 85% | 2887 fps | 98.7% |
| Rottweil R 904 | <<locked>> | 88% | 54,520 psi | 85% | 2740 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 90% | 56,159 psi | 88% | 2799 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 54,549 psi | 85% | 2707 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,695 psi | 89% | 2723 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,114 psi | 86% | 2726 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,956 psi | 88% | 2684 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,738 psi | 87% | 2799 fps | 99.8% |
| Somchem S361 | <<locked>> | 88% | 55,724 psi | 87% | 2730 fps | 98.9% |
| Somchem S365 | <<locked>> | 86% | 55,317 psi | 87% | 2743 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,623 psi | 89% | 2776 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 56,898 psi | 89% | 2667 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,217 psi | 88% | 2733 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,144 psi | 88% | 2756 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 55,405 psi | 87% | 2736 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,027 psi | 86% | 2769 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,781 psi | 86% | 2844 fps | 99% |
| Vihtavuori N565 | <<locked>> | 96% | 54,795 psi | 86% | 2828 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 55,288 psi | 87% | 2887 fps | 98.4% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 52,446 psi | 82% | 2881 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,738 psi | 87% | 2694 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,317 psi | 85% | 2762 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 54,795 psi | 86% | 2877 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,420 psi | 88% | 2769 fps | 99.8% |
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% | 36,985 psi | 58% | 2425 fps | 98.8% |
| Accurate 4350 | <<locked>> | 80% | 49,226 psi | 77% | 2654 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 40,161 psi | 63% | 2585 fps | 96.4% |
| Accurate MAGPRO | <<locked>> | 82% | 40,654 psi | 64% | 2585 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 80% | 40,959 psi | 64% | 2543 fps | 97.7% |
| ADI AR 2213 | <<locked>> | 82% | 39,189 psi | 61% | 2536 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 90% | 37,826 psi | 59% | 2507 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 86% | 30,037 psi | 47% | 2356 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,336 psi | 65% | 2543 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,065 psi | 74% | 2661 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,988 psi | 64% | 2536 fps | 97.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,825 psi | 58% | 2484 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,636 psi | 56% | 2448 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,850 psi | 48% | 2369 fps | 97.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,349 psi | 62% | 2592 fps | 99.9% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 46,760 psi | 73% | 2628 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 34,345 psi | 54% | 2425 fps | 95.5% |
| Bofors RP30 | <<locked>> | 88% | 37,130 psi | 58% | 2523 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 36,825 psi | 58% | 2484 fps | 96.6% |
| Bofors RP7 | <<locked>> | 80% | 51,474 psi | 81% | 2657 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 86% | 36,201 psi | 57% | 2470 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 50,749 psi | 80% | 2707 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 53,055 psi | 83% | 2717 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 80% | 39,015 psi | 61% | 2484 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 82% | 41,089 psi | 64% | 2526 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,541 psi | 70% | 2546 fps | 100% |
| Hodgdon Retumbo | 58.4 gr | 82% | 32,097 psi | 50% | 2444 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 50,662 psi | 79% | 2736 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,992 psi | 44% | 1539 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,731 psi | 73% | 2595 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,591 psi | 82% | 2677 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 46,601 psi | 73% | 2602 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,611 psi | 64% | 2484 fps | 95.9% |
| IMR 7828 SSC | <<locked>> | 82% | 37,768 psi | 59% | 2516 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 96% | 37,579 psi | 59% | 2556 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 50,328 psi | 79% | 2631 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,675 psi | 76% | 2625 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 31,879 psi | 50% | 2306 fps | 97.4% |
| Norma 204 | <<locked>> | 80% | 47,050 psi | 74% | 2638 fps | 98.8% |
| Norma 217 | <<locked>> | 90% | 30,835 psi | 48% | 2405 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 38,754 psi | 61% | 2556 fps | 98.4% |
| Norma URP | <<locked>> | 80% | 48,109 psi | 75% | 2641 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 37,289 psi | 58% | 2520 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 46,978 psi | 74% | 2644 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 30,966 psi | 49% | 2346 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,718 psi | 45% | 1578 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,139 psi | 77% | 2677 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,355 psi | 74% | 2697 fps | 100% |
| ReloadSwiss RS 76 | 62.5 gr | 82% | 31,125 psi | 49% | 2418 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 40,190 psi | 63% | 2625 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 42,206 psi | 66% | 2523 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 80% | 40,451 psi | 63% | 2526 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 80% | 51,474 psi | 81% | 2657 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,328 psi | 79% | 2631 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,675 psi | 76% | 2625 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,095 psi | 77% | 2579 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,118 psi | 63% | 2523 fps | 97.6% |
| Somchem S361 | <<locked>> | 80% | 42,873 psi | 67% | 2513 fps | 96.3% |
| Somchem S365 | <<locked>> | 80% | 45,324 psi | 71% | 2598 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,901 psi | 64% | 2507 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 80% | 53,403 psi | 84% | 2621 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,501 psi | 78% | 2635 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,549 psi | 56% | 2388 fps | 96.7% |
| Vihtavuori N550 | <<locked>> | 80% | 48,704 psi | 76% | 2638 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,900 psi | 63% | 2520 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,798 psi | 61% | 2543 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 86% | 39,088 psi | 61% | 2539 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 92% | 41,742 psi | 65% | 2641 fps | 95.1% |
| Vihtavuori N570 | <<locked>> | 98% | 48,791 psi | 76% | 2812 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,501 psi | 76% | 2592 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,749 psi | 80% | 2707 fps | 99.9% |
| Winchester StaBALL HD | 58.6 gr | 80% | 32,039 psi | 50% | 2480 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,434 psi | 59% | 2438 fps | 96.7% |
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 73 powders for 7 mm Weath. Mag. loaded with the .284 | 175gr | Barnes Solid RN. Hodgdon Retumbo delivers the highest muzzle velocity at 2,933 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,933 fps. ADI AR 2217 gives the best case fill at 100 %, and 73 of the 73 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 175.0 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 | 175gr | Barnes Solid RN 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.