Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 180gr | Berger Hybrid Target 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 Winchester StaBALL HD.
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% | 55,303 psi | 87% | 2700 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,681 psi | 89% | 2726 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 53,998 psi | 85% | 2799 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 90% | 57,232 psi | 90% | 2785 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 54,984 psi | 86% | 2795 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,852 psi | 83% | 2759 fps | 99.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,500 psi | 74% | 2730 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 57,348 psi | 90% | 2782 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 57,551 psi | 90% | 2776 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,652 psi | 89% | 2772 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,245 psi | 87% | 2792 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,710 psi | 89% | 2756 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,014 psi | 88% | 2818 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,174 psi | 90% | 2844 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,391 psi | 88% | 2759 fps | 97.5% |
| Bofors RP15 | <<locked>> | 94% | 54,447 psi | 85% | 2776 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 55,840 psi | 88% | 2831 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 55,245 psi | 87% | 2792 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 54,795 psi | 86% | 2671 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 54,621 psi | 86% | 2789 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 54,476 psi | 85% | 2726 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 56,797 psi | 89% | 2736 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 54,795 psi | 86% | 2733 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 92% | 57,435 psi | 90% | 2772 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 57,609 psi | 90% | 2697 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,114 psi | 86% | 2900 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,708 psi | 86% | 2759 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,275 psi | 58% | 1693 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,521 psi | 89% | 2710 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,217 psi | 88% | 2690 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 56,913 psi | 89% | 2717 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,738 psi | 87% | 2717 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 94% | 56,913 psi | 89% | 2831 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,062 psi | 67% | 2638 fps | 97.8% |
| Lovex S065 | <<locked>> | 84% | 57,014 psi | 89% | 2690 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,230 psi | 87% | 2690 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 56,652 psi | 89% | 2720 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,653 psi | 90% | 2769 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 43,250 psi | 68% | 2661 fps | 99.5% |
| Norma MRP | <<locked>> | 90% | 55,303 psi | 87% | 2812 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,795 psi | 86% | 2703 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 53,635 psi | 84% | 2792 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 57,319 psi | 90% | 2766 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 56,057 psi | 88% | 2789 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,247 psi | 60% | 1736 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 56,420 psi | 88% | 2746 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,984 psi | 86% | 2776 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 55,637 psi | 87% | 2894 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 54,694 psi | 86% | 2854 fps | 98.9% |
| Rottweil R 904 | <<locked>> | 88% | 54,708 psi | 86% | 2703 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 90% | 56,478 psi | 89% | 2766 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 54,795 psi | 86% | 2671 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,014 psi | 89% | 2690 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,230 psi | 87% | 2690 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,115 psi | 88% | 2648 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,043 psi | 88% | 2762 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 55,927 psi | 88% | 2697 fps | 99% |
| Somchem S365 | <<locked>> | 86% | 55,564 psi | 87% | 2707 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,753 psi | 89% | 2736 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 56,942 psi | 89% | 2628 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,652 psi | 89% | 2700 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,318 psi | 88% | 2720 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 55,622 psi | 87% | 2703 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,332 psi | 87% | 2733 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,998 psi | 86% | 2808 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 96% | 54,897 psi | 86% | 2792 fps | 99.3% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 55,622 psi | 87% | 2854 fps | 98.6% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 52,475 psi | 82% | 2844 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,854 psi | 88% | 2654 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,476 psi | 85% | 2726 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 54,868 psi | 86% | 2838 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,666 psi | 89% | 2736 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% | 37,202 psi | 58% | 2395 fps | 99% |
| Accurate 4350 | <<locked>> | 80% | 49,530 psi | 78% | 2621 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 40,872 psi | 64% | 2559 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 41,162 psi | 65% | 2513 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 80% | 36,753 psi | 58% | 2448 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 88% | 35,607 psi | 56% | 2421 fps | 95% |
| ADI AR 2225 | <<locked>> | 86% | 30,197 psi | 47% | 2333 fps | 96% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,582 psi | 65% | 2513 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,282 psi | 74% | 2625 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,205 psi | 65% | 2507 fps | 97.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,057 psi | 58% | 2457 fps | 96.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,839 psi | 56% | 2418 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,024 psi | 49% | 2343 fps | 98.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,392 psi | 62% | 2556 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 46,876 psi | 73% | 2595 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 34,548 psi | 54% | 2398 fps | 95.8% |
| Bofors RP30 | <<locked>> | 86% | 34,722 psi | 54% | 2434 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 37,057 psi | 58% | 2457 fps | 96.9% |
| Bofors RP7 | <<locked>> | 80% | 51,416 psi | 81% | 2618 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 33,866 psi | 53% | 2382 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 50,865 psi | 80% | 2671 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 53,316 psi | 84% | 2680 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 80% | 39,088 psi | 61% | 2451 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 38,522 psi | 60% | 2441 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,730 psi | 70% | 2513 fps | 100% |
| Hodgdon Retumbo | 57.4 gr | 82% | 32,343 psi | 51% | 2421 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 50,734 psi | 80% | 2700 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,108 psi | 44% | 1516 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,949 psi | 74% | 2562 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,808 psi | 83% | 2641 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 46,833 psi | 73% | 2566 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,814 psi | 64% | 2454 fps | 96.2% |
| IMR 7828 SSC | <<locked>> | 82% | 37,855 psi | 59% | 2484 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 94% | 35,288 psi | 55% | 2470 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 50,517 psi | 79% | 2595 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,878 psi | 77% | 2592 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 31,995 psi | 50% | 2277 fps | 97.6% |
| Norma 204 | <<locked>> | 80% | 47,166 psi | 74% | 2602 fps | 98.9% |
| Norma 217 | <<locked>> | 90% | 31,038 psi | 49% | 2382 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 38,885 psi | 61% | 2523 fps | 98.6% |
| Norma URP | <<locked>> | 80% | 48,327 psi | 76% | 2605 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 34,954 psi | 55% | 2431 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 47,094 psi | 74% | 2608 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 31,241 psi | 49% | 2323 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,660 psi | 45% | 1549 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,313 psi | 77% | 2641 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,558 psi | 75% | 2664 fps | 100% |
| ReloadSwiss RS 76 | 59.9 gr | 80% | 29,182 psi | 46% | 2329 fps | 95.2% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 40,364 psi | 63% | 2595 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 42,424 psi | 66% | 2490 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 80% | 40,480 psi | 63% | 2493 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 80% | 51,416 psi | 81% | 2618 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,517 psi | 79% | 2595 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,878 psi | 77% | 2592 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,342 psi | 77% | 2546 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,147 psi | 63% | 2487 fps | 97.8% |
| Somchem S361 | <<locked>> | 80% | 43,033 psi | 67% | 2480 fps | 96.6% |
| Somchem S365 | <<locked>> | 80% | 45,585 psi | 71% | 2566 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,133 psi | 64% | 2477 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 80% | 53,635 psi | 84% | 2585 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,734 psi | 78% | 2598 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,752 psi | 56% | 2362 fps | 97% |
| Vihtavuori N550 | <<locked>> | 80% | 49,037 psi | 77% | 2605 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,103 psi | 63% | 2487 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,928 psi | 61% | 2513 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 84% | 36,608 psi | 57% | 2451 fps | 95% |
| Vihtavuori N568 | <<locked>> | 92% | 41,989 psi | 66% | 2615 fps | 95.5% |
| Vihtavuori N570 | <<locked>> | 98% | 49,052 psi | 77% | 2782 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,704 psi | 76% | 2556 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,082 psi | 80% | 2674 fps | 100% |
| Winchester StaBALL HD | 57.5 gr | 80% | 32,213 psi | 50% | 2451 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,492 psi | 59% | 2405 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 72 powders for 7 mm Weath. Mag. loaded with the .284 | 180gr | Berger Hybrid Target. Hodgdon Retumbo delivers the highest muzzle velocity at 2,900 fps; across all powders the maximum-charge window runs from 1,693 fps to 2,900 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 180.0 gr projectile in 0.284" calls for a 1:9.0 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, Winchester StaBALL HD rank at the top here: for 7 mm Weath. Mag. with the .284 | 180gr | Berger Hybrid Target 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.