Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 174gr | Prvi Partizan FMJ BT bullet and 71 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 Accurate MAGPRO.
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.
A valid access license is required to use the Personalized Load Calculator.
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% | 56,666 psi | 89% | 2769 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 53,925 psi | 85% | 2740 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 55,347 psi | 87% | 2867 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 88% | 54,882 psi | 86% | 2805 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 92% | 56,478 psi | 89% | 2867 fps | 99.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,389 psi | 85% | 2835 fps | 99.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,892 psi | 77% | 2799 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 54,998 psi | 86% | 2799 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 84% | 55,100 psi | 86% | 2795 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 54,375 psi | 85% | 2792 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 56,739 psi | 89% | 2861 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 54,549 psi | 85% | 2779 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 57,653 psi | 90% | 2894 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 54,694 psi | 86% | 2861 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 51,126 psi | 80% | 2851 fps | 96.2% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,363 psi | 90% | 2828 fps | 97.6% |
| Bofors RP15 | <<locked>> | 94% | 55,912 psi | 88% | 2851 fps | 99.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 57,522 psi | 90% | 2904 fps | 99.8% |
| Bofors RP5 | <<locked>> | 92% | 56,739 psi | 89% | 2861 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 55,695 psi | 87% | 2740 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 55,912 psi | 88% | 2861 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 55,477 psi | 87% | 2792 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 56,028 psi | 88% | 2805 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,027 psi | 86% | 2789 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,274 psi | 87% | 2720 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 56,608 psi | 89% | 2972 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 55,825 psi | 87% | 2828 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,434 psi | 59% | 1742 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,609 psi | 90% | 2779 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,058 psi | 89% | 2759 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 54,433 psi | 85% | 2733 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,782 psi | 89% | 2785 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 92% | 54,433 psi | 85% | 2848 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,382 psi | 70% | 2707 fps | 98% |
| Lovex S065 | <<locked>> | 82% | 54,491 psi | 85% | 2707 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,217 psi | 88% | 2756 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 54,404 psi | 85% | 2736 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,071 psi | 86% | 2785 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 44,875 psi | 70% | 2736 fps | 99.6% |
| Norma MRP | <<locked>> | 90% | 56,550 psi | 89% | 2881 fps | 100% |
| Norma URP | <<locked>> | 84% | 55,927 psi | 88% | 2772 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 55,390 psi | 87% | 2871 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 54,853 psi | 86% | 2782 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 57,682 psi | 90% | 2858 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,392 psi | 60% | 1785 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,056 psi | 85% | 2762 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 56,231 psi | 88% | 2844 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 57,508 psi | 90% | 2972 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 56,724 psi | 89% | 2933 fps | 99.1% |
| Rottweil R 904 | <<locked>> | 88% | 55,724 psi | 87% | 2772 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 90% | 57,725 psi | 90% | 2838 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 55,695 psi | 87% | 2740 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 54,491 psi | 85% | 2707 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,217 psi | 88% | 2756 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,014 psi | 89% | 2713 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 57,290 psi | 90% | 2831 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 57,145 psi | 90% | 2766 fps | 99.1% |
| Somchem S365 | <<locked>> | 86% | 56,884 psi | 89% | 2776 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 54,389 psi | 85% | 2753 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 57,653 psi | 90% | 2766 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,711 psi | 90% | 2792 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 56,724 psi | 89% | 2769 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,681 psi | 89% | 2805 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 56,217 psi | 88% | 2881 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 96% | 56,579 psi | 89% | 2867 fps | 99.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 57,276 psi | 90% | 2927 fps | 98.8% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 54,128 psi | 85% | 2920 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 57,130 psi | 90% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,738 psi | 87% | 2799 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 56,884 psi | 89% | 2910 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,201 psi | 85% | 2753 fps | 99.7% |
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% | 38,058 psi | 60% | 2454 fps | 99% |
| Accurate 4350 | <<locked>> | 80% | 50,575 psi | 79% | 2687 fps | 100% |
| Accurate MAGPRO | 63.6 gr | 82% | 41,829 psi | 66% | 2621 fps | 95.6% |
| ADI AR 2209 | <<locked>> | 80% | 42,076 psi | 66% | 2575 fps | 98% |
| ADI AR 2213 | <<locked>> | 80% | 37,492 psi | 59% | 2510 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 88% | 36,376 psi | 57% | 2484 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 86% | 30,893 psi | 48% | 2392 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,467 psi | 67% | 2579 fps | 98.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,428 psi | 76% | 2694 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,076 psi | 66% | 2572 fps | 98% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,898 psi | 59% | 2520 fps | 97% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,666 psi | 57% | 2477 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,778 psi | 50% | 2405 fps | 98.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,756 psi | 64% | 2628 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 47,442 psi | 74% | 2785 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 47,732 psi | 75% | 2661 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 35,244 psi | 55% | 2457 fps | 95.9% |
| Bofors RP30 | <<locked>> | 86% | 35,839 psi | 56% | 2500 fps | 95.4% |
| Bofors RP5 | <<locked>> | 80% | 37,898 psi | 59% | 2520 fps | 97% |
| Bofors RP7 | <<locked>> | 80% | 52,402 psi | 82% | 2687 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 34,693 psi | 54% | 2444 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 51,938 psi | 81% | 2740 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 40,016 psi | 63% | 2516 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,305 psi | 62% | 2500 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,629 psi | 72% | 2575 fps | 100% |
| Hodgdon Retumbo | 60.2 gr | 82% | 33,156 psi | 52% | 2484 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 51,938 psi | 81% | 2769 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,123 psi | 44% | 1555 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,834 psi | 75% | 2628 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,722 psi | 84% | 2710 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 47,834 psi | 75% | 2631 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,611 psi | 65% | 2516 fps | 96.3% |
| IMR 7828 SSC | <<locked>> | 82% | 38,769 psi | 61% | 2549 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 94% | 36,332 psi | 57% | 2536 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 51,300 psi | 80% | 2657 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,647 psi | 78% | 2654 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 32,837 psi | 51% | 2336 fps | 97.8% |
| Norma 204 | <<locked>> | 80% | 48,167 psi | 75% | 2671 fps | 99% |
| Norma 217 | <<locked>> | 90% | 31,966 psi | 50% | 2444 fps | 96% |
| Norma MRP | <<locked>> | 80% | 39,871 psi | 62% | 2585 fps | 98.7% |
| Norma URP | <<locked>> | 80% | 49,124 psi | 77% | 2671 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 35,824 psi | 56% | 2493 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 48,109 psi | 75% | 2677 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 31,981 psi | 50% | 2379 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,848 psi | 45% | 1594 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,589 psi | 79% | 2710 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,776 psi | 76% | 2730 fps | 100% |
| ReloadSwiss RS 76 | 62.8 gr | 80% | 29,907 psi | 47% | 2388 fps | 95.3% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 41,713 psi | 65% | 2667 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 43,294 psi | 68% | 2556 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 80% | 41,408 psi | 65% | 2556 fps | 98% |
| Rottweil R 907 | <<locked>> | 80% | 52,402 psi | 82% | 2687 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,300 psi | 80% | 2657 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,647 psi | 78% | 2654 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,183 psi | 79% | 2612 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,075 psi | 64% | 2552 fps | 97.9% |
| Somchem S361 | <<locked>> | 80% | 43,947 psi | 69% | 2546 fps | 96.7% |
| Somchem S365 | <<locked>> | 80% | 46,673 psi | 73% | 2631 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,974 psi | 66% | 2539 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 80% | 50,705 psi | 79% | 2667 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,535 psi | 57% | 2421 fps | 97.1% |
| Vihtavuori N550 | <<locked>> | 80% | 49,879 psi | 78% | 2667 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,959 psi | 64% | 2549 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 39,827 psi | 62% | 2579 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 84% | 37,739 psi | 59% | 2516 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 92% | 43,120 psi | 68% | 2680 fps | 95.7% |
| Vihtavuori N570 | <<locked>> | 98% | 50,473 psi | 79% | 2854 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,705 psi | 78% | 2621 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,170 psi | 82% | 2740 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,388 psi | 52% | 2516 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,421 psi | 60% | 2470 fps | 97.1% |
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 71 powders for 7 mm Weath. Mag. loaded with the .284 | 174gr | Prvi Partizan FMJ BT. Hodgdon Retumbo delivers the highest muzzle velocity at 2,972 fps; across all powders the maximum-charge window runs from 1,742 fps to 2,972 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 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 174.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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, Accurate MAGPRO rank at the top here: for 7 mm Weath. Mag. with the .284 | 174gr | Prvi Partizan FMJ BT 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.