Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 175gr | Nosler Partition bullet and 72 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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 55,709 psi | 87% | 2746 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,608 psi | 89% | 2762 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 57,159 psi | 90% | 2894 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 90% | 54,244 psi | 85% | 2838 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 90% | 57,479 psi | 90% | 2828 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 55,332 psi | 87% | 2838 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,200 psi | 83% | 2802 fps | 99.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,790 psi | 75% | 2772 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 54,157 psi | 85% | 2769 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,855 psi | 89% | 2815 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,593 psi | 87% | 2835 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,884 psi | 89% | 2799 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,536 psi | 89% | 2867 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,406 psi | 90% | 2890 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,420 psi | 88% | 2799 fps | 97.4% |
| Bofors RP15 | <<locked>> | 94% | 54,795 psi | 86% | 2822 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,217 psi | 88% | 2874 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 55,593 psi | 87% | 2835 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 54,853 psi | 86% | 2713 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 54,737 psi | 86% | 2828 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 54,433 psi | 85% | 2766 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 57,043 psi | 89% | 2779 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 54,897 psi | 86% | 2776 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 90% | 53,911 psi | 84% | 2759 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 54,404 psi | 85% | 2697 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,230 psi | 87% | 2943 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,868 psi | 86% | 2805 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,275 psi | 58% | 1726 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,608 psi | 89% | 2753 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,260 psi | 88% | 2733 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 57,043 psi | 89% | 2759 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,941 psi | 88% | 2759 fps | 99% |
| IMR 7828 SSC | <<locked>> | 94% | 57,188 psi | 90% | 2877 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,221 psi | 68% | 2677 fps | 97.7% |
| Lovex S065 | <<locked>> | 84% | 57,029 psi | 89% | 2733 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,434 psi | 87% | 2733 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 56,782 psi | 89% | 2759 fps | 100% |
| Norma 204 | <<locked>> | 84% | 54,099 psi | 85% | 2756 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 43,598 psi | 68% | 2703 fps | 99.4% |
| Norma MRP | <<locked>> | 90% | 55,361 psi | 87% | 2851 fps | 100% |
| Norma URP | <<locked>> | 84% | 55,042 psi | 86% | 2749 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 53,925 psi | 85% | 2838 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 57,537 psi | 90% | 2808 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 56,405 psi | 88% | 2831 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,218 psi | 60% | 1768 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 56,739 psi | 89% | 2789 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 55,172 psi | 86% | 2818 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 56,086 psi | 88% | 2940 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 54,984 psi | 86% | 2894 fps | 98.8% |
| Rottweil R 904 | <<locked>> | 88% | 54,781 psi | 86% | 2746 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 90% | 56,492 psi | 89% | 2808 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 54,853 psi | 86% | 2713 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,029 psi | 89% | 2733 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,434 psi | 87% | 2733 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,260 psi | 88% | 2690 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,057 psi | 88% | 2805 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 56,188 psi | 88% | 2740 fps | 98.9% |
| Somchem S365 | <<locked>> | 86% | 55,709 psi | 87% | 2749 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,942 psi | 89% | 2779 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 57,232 psi | 90% | 2674 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,550 psi | 89% | 2740 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,652 psi | 89% | 2766 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 55,970 psi | 88% | 2749 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,637 psi | 87% | 2779 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 55,071 psi | 86% | 2851 fps | 99% |
| Vihtavuori N565 | <<locked>> | 96% | 55,288 psi | 87% | 2838 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,086 psi | 88% | 2900 fps | 98.6% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 52,939 psi | 83% | 2890 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,028 psi | 88% | 2697 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,650 psi | 86% | 2769 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,463 psi | 87% | 2884 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,971 psi | 89% | 2779 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% | 37,289 psi | 58% | 2431 fps | 98.9% |
| Accurate 4350 | <<locked>> | 80% | 49,617 psi | 78% | 2661 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 40,524 psi | 64% | 2592 fps | 96.6% |
| Accurate MAGPRO | <<locked>> | 82% | 40,930 psi | 64% | 2592 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 80% | 41,249 psi | 65% | 2549 fps | 97.8% |
| ADI AR 2213 | <<locked>> | 80% | 36,796 psi | 58% | 2484 fps | 95% |
| ADI AR 2217 | <<locked>> | 90% | 38,043 psi | 60% | 2513 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 86% | 30,226 psi | 47% | 2362 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,471 psi | 74% | 2664 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,278 psi | 65% | 2546 fps | 97.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,144 psi | 58% | 2493 fps | 96.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,969 psi | 56% | 2454 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,096 psi | 49% | 2375 fps | 97.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,697 psi | 62% | 2598 fps | 99.9% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 46,949 psi | 74% | 2631 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 34,650 psi | 54% | 2434 fps | 95.6% |
| Bofors RP30 | <<locked>> | 86% | 34,983 psi | 55% | 2474 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 37,144 psi | 58% | 2493 fps | 96.7% |
| Bofors RP7 | <<locked>> | 80% | 51,561 psi | 81% | 2661 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 86% | 36,434 psi | 57% | 2477 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 51,097 psi | 80% | 2713 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 53,374 psi | 84% | 2723 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 80% | 39,305 psi | 62% | 2490 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 38,580 psi | 60% | 2477 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,701 psi | 70% | 2549 fps | 100% |
| Hodgdon Retumbo | 58.8 gr | 82% | 32,343 psi | 51% | 2451 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 50,995 psi | 80% | 2743 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,963 psi | 44% | 1542 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,065 psi | 74% | 2602 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,910 psi | 83% | 2684 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 46,963 psi | 74% | 2608 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,901 psi | 64% | 2490 fps | 96% |
| IMR 7828 SSC | <<locked>> | 82% | 38,058 psi | 60% | 2523 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 96% | 37,840 psi | 59% | 2559 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 50,662 psi | 79% | 2638 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,979 psi | 77% | 2631 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 32,198 psi | 50% | 2313 fps | 97.5% |
| Norma 204 | <<locked>> | 80% | 47,413 psi | 74% | 2644 fps | 98.9% |
| Norma 217 | <<locked>> | 90% | 31,212 psi | 49% | 2418 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 39,059 psi | 61% | 2562 fps | 98.5% |
| Norma URP | <<locked>> | 80% | 48,443 psi | 76% | 2648 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 37,768 psi | 59% | 2530 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 47,297 psi | 74% | 2651 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 31,372 psi | 49% | 2356 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,689 psi | 45% | 1578 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,516 psi | 78% | 2684 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,674 psi | 75% | 2703 fps | 100% |
| ReloadSwiss RS 76 | 63 gr | 82% | 31,459 psi | 49% | 2428 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 40,640 psi | 64% | 2635 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 42,525 psi | 67% | 2530 fps | 97% |
| Rottweil R 905 | <<locked>> | 80% | 40,799 psi | 64% | 2536 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 80% | 51,561 psi | 81% | 2661 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,662 psi | 79% | 2638 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,979 psi | 77% | 2631 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,400 psi | 77% | 2585 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,466 psi | 63% | 2530 fps | 97.7% |
| Somchem S361 | <<locked>> | 80% | 43,163 psi | 68% | 2516 fps | 96.4% |
| Somchem S365 | <<locked>> | 80% | 45,730 psi | 72% | 2605 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,205 psi | 65% | 2513 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 80% | 53,766 psi | 84% | 2628 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,821 psi | 78% | 2641 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,839 psi | 56% | 2395 fps | 96.8% |
| Vihtavuori N550 | <<locked>> | 80% | 49,023 psi | 77% | 2644 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,248 psi | 63% | 2526 fps | 100% |
| Vihtavuori N560 | 59.6 gr | 80% | 39,102 psi | 61% | 2549 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 86% | 39,363 psi | 62% | 2546 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 92% | 42,206 psi | 66% | 2654 fps | 95.3% |
| Vihtavuori N570 | <<locked>> | 98% | 49,269 psi | 77% | 2822 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,820 psi | 77% | 2598 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,097 psi | 80% | 2713 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,460 psi | 51% | 2490 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,724 psi | 59% | 2444 fps | 96.8% |
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 72 powders for 7 mm Weath. Mag. loaded with the .284 | 175gr | Nosler Partition. Hodgdon Retumbo delivers the highest muzzle velocity at 2,943 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,943 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 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 0.284" 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, Vihtavuori N560 rank at the top here: for 7 mm Weath. Mag. with the .284 | 175gr | Nosler Partition 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.