Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 175gr | Woodleigh PP SN 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 Vihtavuori N560.
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>> | 92% | 56,260 psi | 88% | 2756 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 57,261 psi | 90% | 2776 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 54,128 psi | 85% | 2848 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 90% | 54,766 psi | 86% | 2851 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 88% | 54,418 psi | 85% | 2785 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 55,869 psi | 88% | 2848 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,882 psi | 84% | 2818 fps | 99.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,182 psi | 76% | 2779 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 54,520 psi | 85% | 2776 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 57,363 psi | 90% | 2825 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 56,086 psi | 88% | 2844 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 57,711 psi | 90% | 2812 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 57,029 psi | 89% | 2874 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 54,288 psi | 85% | 2844 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 50,502 psi | 79% | 2831 fps | 96.1% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,971 psi | 89% | 2812 fps | 97.6% |
| Bofors RP15 | <<locked>> | 94% | 55,274 psi | 87% | 2831 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,695 psi | 89% | 2884 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 56,086 psi | 88% | 2844 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 55,448 psi | 87% | 2723 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 55,419 psi | 87% | 2841 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 54,984 psi | 86% | 2776 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 57,363 psi | 90% | 2789 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 55,637 psi | 87% | 2789 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 90% | 54,375 psi | 85% | 2769 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 54,766 psi | 86% | 2703 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,999 psi | 88% | 2953 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 55,434 psi | 87% | 2812 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,449 psi | 59% | 1732 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,159 psi | 90% | 2766 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,811 psi | 89% | 2743 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 57,624 psi | 90% | 2769 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,391 psi | 88% | 2769 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 94% | 57,740 psi | 90% | 2887 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,874 psi | 69% | 2690 fps | 97.9% |
| Lovex S065 | <<locked>> | 84% | 57,609 psi | 90% | 2740 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,985 psi | 88% | 2743 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 57,580 psi | 90% | 2772 fps | 100% |
| Norma 204 | <<locked>> | 84% | 54,636 psi | 86% | 2766 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 44,280 psi | 69% | 2717 fps | 99.5% |
| Norma MRP | <<locked>> | 90% | 56,159 psi | 88% | 2864 fps | 100% |
| Norma URP | <<locked>> | 84% | 55,651 psi | 87% | 2759 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 54,723 psi | 86% | 2851 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 54,404 psi | 85% | 2766 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 57,145 psi | 90% | 2841 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,189 psi | 60% | 1772 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 57,319 psi | 90% | 2799 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 55,811 psi | 87% | 2828 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 56,782 psi | 89% | 2949 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 55,956 psi | 88% | 2910 fps | 99% |
| Rottweil R 904 | <<locked>> | 88% | 55,317 psi | 87% | 2756 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 90% | 57,029 psi | 89% | 2818 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 55,448 psi | 87% | 2723 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,609 psi | 90% | 2740 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,985 psi | 88% | 2743 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,782 psi | 89% | 2700 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,608 psi | 89% | 2815 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 56,637 psi | 89% | 2749 fps | 99% |
| Somchem S365 | <<locked>> | 86% | 56,333 psi | 88% | 2759 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 57,435 psi | 90% | 2789 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 57,580 psi | 90% | 2680 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 57,174 psi | 90% | 2749 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,145 psi | 90% | 2776 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 56,260 psi | 88% | 2753 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,231 psi | 88% | 2789 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 55,840 psi | 88% | 2864 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 96% | 55,767 psi | 87% | 2844 fps | 99.3% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,782 psi | 89% | 2910 fps | 98.7% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 53,635 psi | 84% | 2900 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,507 psi | 89% | 2703 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,230 psi | 87% | 2779 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 56,144 psi | 88% | 2894 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 57,435 psi | 90% | 2789 fps | 99.9% |
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% | 37,623 psi | 59% | 2438 fps | 99% |
| Accurate 4350 | <<locked>> | 80% | 49,995 psi | 78% | 2671 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 40,857 psi | 64% | 2602 fps | 96.7% |
| Accurate MAGPRO | <<locked>> | 82% | 41,423 psi | 65% | 2605 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 41,597 psi | 65% | 2559 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 80% | 37,260 psi | 58% | 2497 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 88% | 36,027 psi | 56% | 2467 fps | 95% |
| ADI AR 2225 | <<locked>> | 86% | 30,589 psi | 48% | 2375 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,848 psi | 75% | 2674 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,597 psi | 65% | 2552 fps | 97.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,637 psi | 59% | 2507 fps | 96.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,361 psi | 57% | 2464 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,386 psi | 49% | 2385 fps | 98% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,277 psi | 63% | 2608 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 46,804 psi | 73% | 2766 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 47,268 psi | 74% | 2641 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 34,983 psi | 55% | 2441 fps | 95.8% |
| Bofors RP30 | <<locked>> | 86% | 35,433 psi | 56% | 2484 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 37,637 psi | 59% | 2507 fps | 96.9% |
| Bofors RP7 | <<locked>> | 80% | 52,112 psi | 82% | 2671 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 34,374 psi | 54% | 2428 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 51,430 psi | 81% | 2720 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 53,940 psi | 85% | 2733 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 80% | 39,610 psi | 62% | 2500 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,044 psi | 61% | 2487 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,281 psi | 71% | 2562 fps | 100% |
| Hodgdon Retumbo | 59.4 gr | 82% | 32,793 psi | 51% | 2467 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 51,517 psi | 81% | 2753 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,007 psi | 44% | 1545 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,369 psi | 74% | 2608 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,229 psi | 83% | 2690 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 47,543 psi | 75% | 2618 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,191 psi | 65% | 2497 fps | 96.1% |
| IMR 7828 SSC | <<locked>> | 82% | 38,363 psi | 60% | 2533 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 94% | 35,998 psi | 56% | 2520 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 50,995 psi | 80% | 2644 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,342 psi | 77% | 2638 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 32,503 psi | 51% | 2323 fps | 97.6% |
| Norma 204 | <<locked>> | 80% | 47,688 psi | 75% | 2651 fps | 98.9% |
| Norma 217 | <<locked>> | 90% | 31,618 psi | 50% | 2428 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 39,392 psi | 62% | 2569 fps | 98.6% |
| Norma URP | <<locked>> | 80% | 48,805 psi | 76% | 2657 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 35,404 psi | 55% | 2477 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 47,630 psi | 75% | 2657 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 31,604 psi | 50% | 2365 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,732 psi | 45% | 1585 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,082 psi | 78% | 2694 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,283 psi | 76% | 2717 fps | 100% |
| ReloadSwiss RS 76 | 62 gr | 80% | 29,602 psi | 46% | 2372 fps | 95.1% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 41,249 psi | 65% | 2648 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 42,815 psi | 67% | 2539 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 80% | 41,118 psi | 64% | 2543 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 80% | 52,112 psi | 82% | 2671 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,995 psi | 80% | 2644 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,342 psi | 77% | 2638 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,922 psi | 78% | 2598 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,770 psi | 64% | 2539 fps | 97.8% |
| Somchem S361 | <<locked>> | 80% | 43,569 psi | 68% | 2530 fps | 96.6% |
| Somchem S365 | <<locked>> | 80% | 46,108 psi | 72% | 2612 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,713 psi | 65% | 2526 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 80% | 54,114 psi | 85% | 2635 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 50,169 psi | 79% | 2648 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,114 psi | 57% | 2405 fps | 97% |
| Vihtavuori N550 | <<locked>> | 80% | 49,603 psi | 78% | 2654 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,611 psi | 64% | 2533 fps | 100% |
| Vihtavuori N560 | 60.1 gr | 80% | 39,407 psi | 62% | 2559 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 84% | 37,347 psi | 59% | 2503 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 92% | 42,612 psi | 67% | 2661 fps | 95.5% |
| Vihtavuori N570 | <<locked>> | 98% | 49,951 psi | 78% | 2838 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,284 psi | 77% | 2608 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,648 psi | 81% | 2723 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,851 psi | 51% | 2497 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,174 psi | 60% | 2454 fps | 97% |
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 79 powders for 7 mm Weath. Mag. loaded with the .284 | 175gr | Woodleigh PP SN. Hodgdon Retumbo delivers the highest muzzle velocity at 2,953 fps; across all powders the maximum-charge window runs from 1,732 fps to 2,953 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 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 1:11.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, ADI AR 2225 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, Vihtavuori N560 rank at the top here: for 7 mm Weath. Mag. with the .284 | 175gr | Woodleigh PP SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, Alliant Reloder-50, IMR 7977 Enduron 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.