Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 174gr | Prvi Partizan PSP BT 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% | 55,724 psi | 87% | 2756 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,695 psi | 89% | 2776 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 54,273 psi | 85% | 2848 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 90% | 57,522 psi | 90% | 2838 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 55,347 psi | 87% | 2848 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,200 psi | 83% | 2812 fps | 99.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,747 psi | 75% | 2779 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 57,580 psi | 90% | 2835 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 57,609 psi | 90% | 2825 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,898 psi | 89% | 2825 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,608 psi | 87% | 2844 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,898 psi | 89% | 2805 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,492 psi | 89% | 2874 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,682 psi | 90% | 2900 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,608 psi | 89% | 2808 fps | 97.4% |
| Bofors RP15 | <<locked>> | 94% | 54,795 psi | 86% | 2831 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,144 psi | 88% | 2881 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 55,608 psi | 87% | 2844 fps | 99.8% |
| Bofors RP7 | <<locked>> | 82% | 54,955 psi | 86% | 2723 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 54,679 psi | 86% | 2835 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 82% | 54,476 psi | 85% | 2776 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 56,884 psi | 89% | 2785 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 54,926 psi | 86% | 2782 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 90% | 53,940 psi | 85% | 2769 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 54,230 psi | 85% | 2703 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,230 psi | 87% | 2949 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,897 psi | 86% | 2812 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,449 psi | 59% | 1736 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,695 psi | 89% | 2762 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,347 psi | 88% | 2743 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 57,116 psi | 90% | 2769 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,985 psi | 88% | 2769 fps | 99% |
| IMR 7828 SSC | <<locked>> | 94% | 57,174 psi | 90% | 2884 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,207 psi | 68% | 2684 fps | 97.6% |
| Lovex S065 | <<locked>> | 84% | 57,116 psi | 90% | 2740 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,506 psi | 87% | 2743 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 56,797 psi | 89% | 2769 fps | 100% |
| Norma 204 | <<locked>> | 84% | 54,172 psi | 85% | 2766 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 43,569 psi | 68% | 2710 fps | 99.4% |
| Norma MRP | <<locked>> | 90% | 55,361 psi | 87% | 2858 fps | 100% |
| Norma URP | <<locked>> | 84% | 55,129 psi | 86% | 2759 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 54,172 psi | 85% | 2848 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 57,595 psi | 90% | 2818 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 56,304 psi | 88% | 2838 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,203 psi | 60% | 1775 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 56,739 psi | 89% | 2799 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,998 psi | 86% | 2825 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 55,970 psi | 88% | 2946 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 55,187 psi | 86% | 2907 fps | 98.8% |
| Rottweil R 904 | <<locked>> | 88% | 54,853 psi | 86% | 2753 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 90% | 56,478 psi | 89% | 2815 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 54,955 psi | 86% | 2723 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,116 psi | 90% | 2740 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,506 psi | 87% | 2743 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,362 psi | 88% | 2700 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,057 psi | 88% | 2812 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 56,188 psi | 88% | 2749 fps | 98.9% |
| Somchem S365 | <<locked>> | 86% | 55,767 psi | 87% | 2759 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,927 psi | 89% | 2789 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 57,072 psi | 89% | 2680 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,666 psi | 89% | 2746 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,652 psi | 89% | 2772 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 55,782 psi | 87% | 2753 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,637 psi | 87% | 2785 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 55,085 psi | 86% | 2858 fps | 99% |
| Vihtavuori N565 | <<locked>> | 96% | 55,288 psi | 87% | 2844 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 55,985 psi | 88% | 2907 fps | 98.5% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 52,852 psi | 83% | 2894 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,057 psi | 88% | 2707 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,723 psi | 86% | 2779 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,506 psi | 87% | 2894 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,971 psi | 89% | 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% | 37,362 psi | 59% | 2438 fps | 98.9% |
| Accurate 4350 | <<locked>> | 80% | 49,690 psi | 78% | 2671 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 40,988 psi | 64% | 2602 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 80% | 41,147 psi | 64% | 2556 fps | 97.7% |
| ADI AR 2213 | <<locked>> | 82% | 39,378 psi | 62% | 2549 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 90% | 38,087 psi | 60% | 2520 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 86% | 30,284 psi | 47% | 2369 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,756 psi | 65% | 2562 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,543 psi | 75% | 2674 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,379 psi | 65% | 2556 fps | 97.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,188 psi | 58% | 2500 fps | 96.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,882 psi | 56% | 2461 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,038 psi | 49% | 2382 fps | 97.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,740 psi | 62% | 2605 fps | 99.9% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 46,963 psi | 74% | 2641 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 34,563 psi | 54% | 2438 fps | 95.5% |
| Bofors RP30 | <<locked>> | 86% | 35,012 psi | 55% | 2480 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 37,188 psi | 58% | 2500 fps | 96.7% |
| Bofors RP7 | <<locked>> | 80% | 51,663 psi | 81% | 2671 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 86% | 36,463 psi | 57% | 2487 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 51,198 psi | 80% | 2723 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 53,447 psi | 84% | 2733 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 80% | 39,378 psi | 62% | 2500 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 38,653 psi | 61% | 2484 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,788 psi | 70% | 2559 fps | 100% |
| Hodgdon Retumbo | 59.1 gr | 82% | 32,416 psi | 51% | 2457 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 51,039 psi | 80% | 2753 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,978 psi | 44% | 1549 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,949 psi | 74% | 2605 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,011 psi | 83% | 2690 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 47,065 psi | 74% | 2618 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,799 psi | 64% | 2497 fps | 95.9% |
| IMR 7828 SSC | <<locked>> | 82% | 37,942 psi | 59% | 2526 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 96% | 37,840 psi | 59% | 2569 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 50,560 psi | 79% | 2641 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,863 psi | 77% | 2638 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 32,126 psi | 50% | 2320 fps | 97.4% |
| Norma 204 | <<locked>> | 80% | 47,224 psi | 74% | 2651 fps | 98.8% |
| Norma 217 | <<locked>> | 90% | 31,096 psi | 49% | 2421 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 38,943 psi | 61% | 2566 fps | 98.4% |
| Norma URP | <<locked>> | 80% | 48,327 psi | 76% | 2654 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 37,608 psi | 59% | 2536 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 47,152 psi | 74% | 2654 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 31,241 psi | 49% | 2359 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,703 psi | 45% | 1585 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,574 psi | 78% | 2694 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,761 psi | 75% | 2713 fps | 100% |
| ReloadSwiss RS 76 | 63.3 gr | 82% | 31,488 psi | 49% | 2434 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 40,625 psi | 64% | 2641 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 42,424 psi | 66% | 2536 fps | 97% |
| Rottweil R 905 | <<locked>> | 80% | 40,683 psi | 64% | 2539 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 80% | 51,663 psi | 81% | 2671 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,560 psi | 79% | 2641 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,863 psi | 77% | 2638 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,530 psi | 78% | 2595 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,350 psi | 63% | 2536 fps | 97.7% |
| Somchem S361 | <<locked>> | 80% | 43,192 psi | 68% | 2526 fps | 96.4% |
| Somchem S365 | <<locked>> | 80% | 45,600 psi | 71% | 2612 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,263 psi | 65% | 2523 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 80% | 53,621 psi | 84% | 2635 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,922 psi | 78% | 2651 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,897 psi | 56% | 2405 fps | 96.8% |
| Vihtavuori N550 | <<locked>> | 80% | 49,124 psi | 77% | 2654 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,147 psi | 63% | 2533 fps | 100% |
| Vihtavuori N560 | 59.8 gr | 80% | 38,957 psi | 61% | 2556 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 86% | 39,407 psi | 62% | 2556 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 92% | 42,177 psi | 66% | 2657 fps | 95.2% |
| Vihtavuori N570 | <<locked>> | 98% | 49,211 psi | 77% | 2828 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,849 psi | 77% | 2605 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,198 psi | 80% | 2723 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,300 psi | 51% | 2490 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,782 psi | 59% | 2454 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 | 174gr | Prvi Partizan PSP BT. Hodgdon Retumbo delivers the highest muzzle velocity at 2,949 fps; across all powders the maximum-charge window runs from 1,736 fps to 2,949 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 59–90 %, leaving at least 10 % headroom. The 174.0 gr projectile in 0.284" calls for a 1:11.0 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 | 174gr | Prvi Partizan PSP 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.