Load Specifications
Load data in caliber 7 mm Weath. Mag. with .287 | 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% | 56,173 psi | 88% | 2753 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 57,145 psi | 90% | 2772 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 54,041 psi | 85% | 2844 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 90% | 54,694 psi | 86% | 2848 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 88% | 54,331 psi | 85% | 2782 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 55,782 psi | 87% | 2848 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,824 psi | 84% | 2815 fps | 99.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,124 psi | 75% | 2779 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 54,404 psi | 85% | 2776 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 57,276 psi | 90% | 2825 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,999 psi | 88% | 2841 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 57,363 psi | 90% | 2805 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,956 psi | 89% | 2871 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 53,925 psi | 85% | 2841 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 50,198 psi | 79% | 2828 fps | 96% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,927 psi | 89% | 2808 fps | 97.5% |
| Bofors RP15 | <<locked>> | 94% | 55,187 psi | 86% | 2828 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,579 psi | 89% | 2881 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 55,999 psi | 88% | 2841 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 55,347 psi | 87% | 2723 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 55,347 psi | 87% | 2841 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 54,882 psi | 86% | 2772 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 57,276 psi | 90% | 2785 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 55,564 psi | 87% | 2785 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 90% | 54,302 psi | 85% | 2766 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 54,650 psi | 86% | 2700 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,927 psi | 88% | 2953 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 55,347 psi | 87% | 2812 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,318 psi | 58% | 1729 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,072 psi | 89% | 2762 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,710 psi | 89% | 2743 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 57,522 psi | 90% | 2766 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,318 psi | 88% | 2766 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 94% | 57,653 psi | 90% | 2884 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,816 psi | 69% | 2687 fps | 97.8% |
| Lovex S065 | <<locked>> | 84% | 57,508 psi | 90% | 2740 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,883 psi | 88% | 2740 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 57,508 psi | 90% | 2772 fps | 100% |
| Norma 204 | <<locked>> | 84% | 54,549 psi | 85% | 2766 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 44,005 psi | 69% | 2713 fps | 99.5% |
| Norma MRP | <<locked>> | 90% | 56,072 psi | 88% | 2861 fps | 100% |
| Norma URP | <<locked>> | 84% | 55,550 psi | 87% | 2756 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 54,636 psi | 86% | 2848 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 54,317 psi | 85% | 2762 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 57,087 psi | 89% | 2841 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,261 psi | 60% | 1772 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 57,217 psi | 90% | 2799 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 55,709 psi | 87% | 2825 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 56,666 psi | 89% | 2949 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 55,666 psi | 87% | 2907 fps | 98.9% |
| Rottweil R 904 | <<locked>> | 88% | 55,230 psi | 87% | 2753 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 90% | 56,942 psi | 89% | 2815 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 55,347 psi | 87% | 2723 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,508 psi | 90% | 2740 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,883 psi | 88% | 2740 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,710 psi | 89% | 2700 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,521 psi | 89% | 2812 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 56,565 psi | 89% | 2746 fps | 99% |
| Somchem S365 | <<locked>> | 86% | 56,231 psi | 88% | 2759 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 57,363 psi | 90% | 2785 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 57,479 psi | 90% | 2677 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 57,072 psi | 89% | 2746 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,072 psi | 89% | 2772 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 56,202 psi | 88% | 2753 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,130 psi | 88% | 2785 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 55,767 psi | 87% | 2861 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 96% | 55,695 psi | 87% | 2844 fps | 99.3% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,666 psi | 89% | 2910 fps | 98.7% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 53,577 psi | 84% | 2900 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,434 psi | 88% | 2703 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,129 psi | 86% | 2776 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 56,043 psi | 88% | 2890 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 57,363 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% | 37,521 psi | 59% | 2434 fps | 98.9% |
| Accurate 4350 | <<locked>> | 80% | 49,908 psi | 78% | 2667 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 40,756 psi | 64% | 2598 fps | 96.7% |
| Accurate MAGPRO | <<locked>> | 82% | 41,350 psi | 65% | 2602 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 41,495 psi | 65% | 2556 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 80% | 37,173 psi | 58% | 2493 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 88% | 35,998 psi | 56% | 2467 fps | 95% |
| ADI AR 2225 | <<locked>> | 86% | 30,530 psi | 48% | 2375 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,776 psi | 75% | 2671 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,524 psi | 65% | 2552 fps | 97.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,536 psi | 59% | 2503 fps | 96.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,260 psi | 57% | 2461 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,299 psi | 49% | 2382 fps | 98% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,176 psi | 63% | 2605 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 46,775 psi | 73% | 2762 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 47,210 psi | 74% | 2641 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 34,882 psi | 55% | 2441 fps | 95.8% |
| Bofors RP30 | <<locked>> | 86% | 35,360 psi | 55% | 2480 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 37,536 psi | 59% | 2503 fps | 96.9% |
| Bofors RP7 | <<locked>> | 80% | 52,011 psi | 82% | 2671 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 34,301 psi | 54% | 2425 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 51,329 psi | 80% | 2717 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 53,838 psi | 84% | 2733 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 80% | 39,523 psi | 62% | 2497 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 38,986 psi | 61% | 2484 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,194 psi | 71% | 2559 fps | 100% |
| Hodgdon Retumbo | 59.3 gr | 82% | 32,706 psi | 51% | 2461 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 51,430 psi | 81% | 2749 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,065 psi | 44% | 1545 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,268 psi | 74% | 2605 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,374 psi | 84% | 2690 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 47,442 psi | 74% | 2615 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,104 psi | 64% | 2497 fps | 96.1% |
| IMR 7828 SSC | <<locked>> | 82% | 38,276 psi | 60% | 2530 fps | 95.7% |
| IMR 8133 Enduron | <<locked>> | 94% | 35,781 psi | 56% | 2513 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 50,923 psi | 80% | 2641 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,240 psi | 77% | 2638 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 32,430 psi | 51% | 2320 fps | 97.6% |
| Norma 204 | <<locked>> | 80% | 47,587 psi | 75% | 2651 fps | 98.9% |
| Norma 217 | <<locked>> | 90% | 31,546 psi | 49% | 2428 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 39,320 psi | 62% | 2569 fps | 98.6% |
| Norma URP | <<locked>> | 80% | 48,733 psi | 76% | 2654 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 37,956 psi | 59% | 2536 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 47,529 psi | 74% | 2657 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 31,560 psi | 49% | 2362 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,790 psi | 45% | 1585 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,980 psi | 78% | 2690 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,182 psi | 76% | 2713 fps | 100% |
| ReloadSwiss RS 76 | 61.9 gr | 80% | 29,544 psi | 46% | 2369 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 41,205 psi | 65% | 2648 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 42,728 psi | 67% | 2536 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 80% | 41,017 psi | 64% | 2539 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 80% | 52,011 psi | 82% | 2671 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,923 psi | 80% | 2641 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,240 psi | 77% | 2638 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,864 psi | 78% | 2595 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,727 psi | 64% | 2536 fps | 97.8% |
| Somchem S361 | <<locked>> | 80% | 43,497 psi | 68% | 2526 fps | 96.6% |
| Somchem S365 | <<locked>> | 80% | 45,992 psi | 72% | 2608 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,611 psi | 65% | 2526 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 80% | 54,012 psi | 85% | 2631 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 50,082 psi | 78% | 2644 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,027 psi | 56% | 2402 fps | 96.9% |
| Vihtavuori N550 | <<locked>> | 80% | 49,501 psi | 78% | 2651 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,553 psi | 64% | 2533 fps | 100% |
| Vihtavuori N560 | 60 gr | 80% | 39,320 psi | 62% | 2556 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 84% | 37,275 psi | 58% | 2500 fps | 95% |
| Vihtavuori N568 | <<locked>> | 92% | 42,540 psi | 67% | 2657 fps | 95.4% |
| Vihtavuori N570 | <<locked>> | 98% | 49,908 psi | 78% | 2835 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,240 psi | 77% | 2605 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,590 psi | 81% | 2720 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,735 psi | 51% | 2493 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,116 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 .287 | 175gr | Woodleigh PP SN. Hodgdon Retumbo delivers the highest muzzle velocity at 2,953 fps; across all powders the maximum-charge window runs from 1,729 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 58–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.287" 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 .287 | 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.