Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 173gr | Sellier & Bellot SPCE bullet and 74 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% | 55,883 psi | 88% | 2766 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 57,232 psi | 90% | 2792 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 57,551 psi | 90% | 2917 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 90% | 54,607 psi | 86% | 2864 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 90% | 57,696 psi | 90% | 2851 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 55,724 psi | 87% | 2861 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,708 psi | 84% | 2831 fps | 99.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,993 psi | 75% | 2792 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 54,505 psi | 85% | 2795 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 54,505 psi | 85% | 2795 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 84% | 54,505 psi | 85% | 2792 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 57,276 psi | 90% | 2841 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,999 psi | 88% | 2858 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 57,334 psi | 90% | 2822 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,855 psi | 89% | 2887 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 53,853 psi | 84% | 2858 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,826 psi | 89% | 2825 fps | 97.4% |
| Bofors RP15 | <<locked>> | 94% | 55,187 psi | 86% | 2848 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,492 psi | 89% | 2894 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 55,999 psi | 88% | 2858 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 55,216 psi | 87% | 2736 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 55,230 psi | 87% | 2854 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 54,955 psi | 86% | 2792 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 57,377 psi | 90% | 2802 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 55,303 psi | 87% | 2799 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 90% | 54,302 psi | 85% | 2782 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 54,752 psi | 86% | 2720 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,811 psi | 87% | 2969 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 55,332 psi | 87% | 2828 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,362 psi | 59% | 1742 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,116 psi | 90% | 2779 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,579 psi | 89% | 2756 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 57,348 psi | 90% | 2782 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,115 psi | 88% | 2779 fps | 99% |
| IMR 7828 SSC | <<locked>> | 94% | 57,609 psi | 90% | 2900 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,714 psi | 69% | 2700 fps | 97.7% |
| Lovex S065 | <<locked>> | 84% | 57,348 psi | 90% | 2753 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,753 psi | 87% | 2756 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 57,188 psi | 90% | 2782 fps | 100% |
| Norma 204 | <<locked>> | 84% | 54,346 psi | 85% | 2779 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 43,903 psi | 69% | 2723 fps | 99.4% |
| Norma MRP | <<locked>> | 90% | 55,753 psi | 87% | 2874 fps | 100% |
| Norma URP | <<locked>> | 84% | 55,390 psi | 87% | 2772 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 54,578 psi | 86% | 2864 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 54,099 psi | 85% | 2779 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 56,913 psi | 89% | 2854 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,305 psi | 60% | 1785 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 57,232 psi | 90% | 2815 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 55,419 psi | 87% | 2838 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 56,463 psi | 88% | 2963 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 55,651 psi | 87% | 2920 fps | 98.9% |
| Rottweil R 904 | <<locked>> | 88% | 55,274 psi | 87% | 2769 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 90% | 56,942 psi | 89% | 2831 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 55,216 psi | 87% | 2736 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,348 psi | 90% | 2753 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,753 psi | 87% | 2756 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,536 psi | 89% | 2713 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,521 psi | 89% | 2828 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 56,507 psi | 89% | 2762 fps | 99% |
| Somchem S365 | <<locked>> | 86% | 56,275 psi | 88% | 2776 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 57,334 psi | 90% | 2805 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 57,624 psi | 90% | 2697 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 57,145 psi | 90% | 2766 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,000 psi | 89% | 2789 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 56,246 psi | 88% | 2769 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,854 psi | 88% | 2799 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 55,463 psi | 87% | 2874 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 96% | 55,579 psi | 87% | 2858 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,492 psi | 89% | 2920 fps | 98.6% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 53,374 psi | 84% | 2910 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,420 psi | 88% | 2720 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,955 psi | 86% | 2792 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,941 psi | 88% | 2907 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 57,348 psi | 90% | 2805 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% | 37,608 psi | 59% | 2451 fps | 98.9% |
| Accurate 4350 | <<locked>> | 80% | 50,024 psi | 78% | 2687 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 40,828 psi | 64% | 2615 fps | 96.6% |
| Accurate MAGPRO | <<locked>> | 82% | 41,191 psi | 65% | 2615 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 80% | 41,408 psi | 65% | 2569 fps | 97.8% |
| ADI AR 2213 | <<locked>> | 80% | 37,072 psi | 58% | 2503 fps | 95% |
| ADI AR 2217 | <<locked>> | 90% | 38,406 psi | 60% | 2536 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 86% | 30,414 psi | 48% | 2382 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,003 psi | 66% | 2572 fps | 97.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,003 psi | 66% | 2572 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,674 psi | 75% | 2687 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,626 psi | 65% | 2569 fps | 97.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,420 psi | 59% | 2516 fps | 96.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,172 psi | 57% | 2474 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,256 psi | 49% | 2395 fps | 97.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,001 psi | 63% | 2618 fps | 99.9% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 47,224 psi | 74% | 2654 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 34,809 psi | 55% | 2451 fps | 95.6% |
| Bofors RP30 | <<locked>> | 86% | 35,230 psi | 55% | 2490 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 37,420 psi | 59% | 2516 fps | 96.7% |
| Bofors RP7 | <<locked>> | 80% | 51,924 psi | 81% | 2684 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 86% | 36,622 psi | 57% | 2497 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 51,430 psi | 81% | 2736 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 53,751 psi | 84% | 2746 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 80% | 39,595 psi | 62% | 2513 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 38,870 psi | 61% | 2497 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,092 psi | 71% | 2572 fps | 100% |
| Hodgdon Retumbo | 59.7 gr | 82% | 32,605 psi | 51% | 2474 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 51,445 psi | 81% | 2766 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,978 psi | 44% | 1555 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,210 psi | 74% | 2621 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,272 psi | 83% | 2707 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 47,326 psi | 74% | 2631 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,031 psi | 64% | 2510 fps | 96% |
| IMR 7828 SSC | <<locked>> | 82% | 38,348 psi | 60% | 2546 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 94% | 35,723 psi | 56% | 2523 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 50,850 psi | 80% | 2657 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,139 psi | 77% | 2651 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 32,372 psi | 51% | 2329 fps | 97.5% |
| Norma 204 | <<locked>> | 80% | 47,485 psi | 74% | 2664 fps | 98.8% |
| Norma 217 | <<locked>> | 90% | 31,386 psi | 49% | 2434 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 39,363 psi | 62% | 2582 fps | 98.5% |
| Norma URP | <<locked>> | 80% | 48,617 psi | 76% | 2667 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 38,000 psi | 60% | 2552 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 47,427 psi | 74% | 2667 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 31,575 psi | 49% | 2375 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,703 psi | 45% | 1594 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,835 psi | 78% | 2707 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,993 psi | 75% | 2726 fps | 100% |
| ReloadSwiss RS 76 | 63.9 gr | 82% | 31,633 psi | 50% | 2448 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 41,075 psi | 64% | 2657 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 42,641 psi | 67% | 2549 fps | 97% |
| Rottweil R 905 | <<locked>> | 80% | 40,959 psi | 64% | 2552 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 80% | 51,924 psi | 81% | 2684 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,850 psi | 80% | 2657 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,139 psi | 77% | 2651 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,748 psi | 78% | 2612 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,625 psi | 64% | 2549 fps | 97.7% |
| Somchem S361 | <<locked>> | 80% | 43,366 psi | 68% | 2539 fps | 96.5% |
| Somchem S365 | <<locked>> | 80% | 45,919 psi | 72% | 2625 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,510 psi | 65% | 2536 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 80% | 53,911 psi | 84% | 2648 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 50,198 psi | 79% | 2664 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,114 psi | 57% | 2418 fps | 96.9% |
| Vihtavuori N550 | <<locked>> | 80% | 49,385 psi | 77% | 2664 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,451 psi | 63% | 2546 fps | 100% |
| Vihtavuori N560 | 60.5 gr | 80% | 39,378 psi | 62% | 2572 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 86% | 39,755 psi | 62% | 2569 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 92% | 42,482 psi | 67% | 2671 fps | 95.3% |
| Vihtavuori N570 | <<locked>> | 98% | 49,719 psi | 78% | 2848 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,284 psi | 77% | 2621 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,430 psi | 81% | 2736 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,605 psi | 51% | 2507 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,985 psi | 60% | 2464 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 74 powders for 7 mm Weath. Mag. loaded with the .284 | 173gr | Sellier & Bellot SPCE. Hodgdon Retumbo delivers the highest muzzle velocity at 2,969 fps; across all powders the maximum-charge window runs from 1,742 fps to 2,969 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 173.0 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 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 | 173gr | Sellier & Bellot SPCE 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.