Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 190gr | Berger Long Range Hybrid Target bullet and 71 powders. The key underlying parameters are shown in the table above.
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% | 56,927 psi | 89% | 2648 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 54,157 psi | 85% | 2615 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 55,550 psi | 87% | 2749 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 88% | 54,911 psi | 86% | 2677 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 56,623 psi | 89% | 2743 fps | 99.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,375 psi | 85% | 2713 fps | 99.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,820 psi | 77% | 2680 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 55,274 psi | 87% | 2667 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 54,418 psi | 85% | 2667 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 56,869 psi | 89% | 2740 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 54,621 psi | 86% | 2651 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 54,201 psi | 85% | 2717 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,042 psi | 86% | 2740 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 50,865 psi | 80% | 2733 fps | 96.9% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,363 psi | 90% | 2707 fps | 98.2% |
| Bofors RP15 | <<locked>> | 94% | 55,767 psi | 87% | 2723 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 57,377 psi | 90% | 2779 fps | 99.9% |
| Bofors RP5 | <<locked>> | 92% | 56,869 psi | 89% | 2740 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 55,927 psi | 88% | 2615 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 55,956 psi | 88% | 2736 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 55,666 psi | 87% | 2667 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 56,231 psi | 88% | 2684 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,143 psi | 86% | 2667 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,579 psi | 87% | 2595 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 56,594 psi | 89% | 2844 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 55,985 psi | 88% | 2703 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,391 psi | 59% | 1644 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 54,317 psi | 85% | 2605 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,334 psi | 90% | 2635 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 54,505 psi | 85% | 2608 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,985 psi | 89% | 2664 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 92% | 54,752 psi | 86% | 2726 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,527 psi | 70% | 2598 fps | 98.6% |
| Lovex S065 | <<locked>> | 82% | 54,679 psi | 86% | 2585 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,536 psi | 89% | 2635 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 54,534 psi | 85% | 2618 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,288 psi | 87% | 2661 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 44,831 psi | 70% | 2621 fps | 99.8% |
| Norma MRP | <<locked>> | 90% | 56,811 psi | 89% | 2756 fps | 100% |
| Norma URP | <<locked>> | 84% | 56,202 psi | 88% | 2648 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 55,564 psi | 87% | 2749 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 55,056 psi | 86% | 2657 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 57,725 psi | 90% | 2736 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,421 psi | 60% | 1686 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,201 psi | 85% | 2638 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 56,492 psi | 89% | 2717 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 57,493 psi | 90% | 2844 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 56,434 psi | 88% | 2808 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 88% | 55,927 psi | 88% | 2651 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 90% | 57,696 psi | 90% | 2710 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 55,927 psi | 88% | 2615 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 54,679 psi | 86% | 2585 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,536 psi | 89% | 2635 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,145 psi | 90% | 2592 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 57,276 psi | 90% | 2707 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 57,348 psi | 90% | 2648 fps | 99.4% |
| Somchem S365 | <<locked>> | 86% | 57,217 psi | 90% | 2651 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 54,592 psi | 86% | 2635 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 54,157 psi | 85% | 2589 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,667 psi | 90% | 2667 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 56,463 psi | 88% | 2684 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 84% | 57,058 psi | 89% | 2648 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,811 psi | 89% | 2677 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 56,420 psi | 88% | 2759 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 96% | 56,565 psi | 89% | 2743 fps | 99.7% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 57,377 psi | 90% | 2808 fps | 99.2% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 54,186 psi | 85% | 2802 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 57,203 psi | 90% | 2598 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,927 psi | 88% | 2671 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 56,956 psi | 89% | 2785 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,186 psi | 85% | 2628 fps | 99.9% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 38,247 psi | 60% | 2352 fps | 99.5% |
| Accurate 4350 | <<locked>> | 80% | 50,807 psi | 80% | 2566 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 39,088 psi | 61% | 2454 fps | 95.6% |
| ADI AR 2209 | <<locked>> | 80% | 42,206 psi | 66% | 2467 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 80% | 37,739 psi | 59% | 2408 fps | 96.3% |
| ADI AR 2217 | <<locked>> | 86% | 34,156 psi | 54% | 2329 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 84% | 29,051 psi | 46% | 2244 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,472 psi | 76% | 2569 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,235 psi | 66% | 2461 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,159 psi | 60% | 2418 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,912 psi | 58% | 2372 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,894 psi | 50% | 2306 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,857 psi | 64% | 2516 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 44,077 psi | 69% | 2612 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 45,005 psi | 71% | 2497 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 35,534 psi | 56% | 2359 fps | 96.8% |
| Bofors RP30 | <<locked>> | 84% | 33,562 psi | 53% | 2346 fps | 95.4% |
| Bofors RP5 | <<locked>> | 80% | 38,159 psi | 60% | 2418 fps | 97.8% |
| Bofors RP7 | <<locked>> | 80% | 52,692 psi | 83% | 2566 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 32,576 psi | 51% | 2293 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 52,127 psi | 82% | 2615 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 40,118 psi | 63% | 2408 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,537 psi | 62% | 2398 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,788 psi | 72% | 2457 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 80% | 31,154 psi | 49% | 2329 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 52,112 psi | 82% | 2648 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,065 psi | 44% | 1467 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,008 psi | 75% | 2510 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,809 psi | 84% | 2585 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,008 psi | 75% | 2513 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,742 psi | 65% | 2408 fps | 97% |
| IMR 7828 SSC | <<locked>> | 80% | 36,376 psi | 57% | 2388 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 92% | 34,098 psi | 53% | 2379 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 51,517 psi | 81% | 2539 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,966 psi | 78% | 2536 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 32,996 psi | 52% | 2241 fps | 98.4% |
| Norma 204 | <<locked>> | 80% | 48,385 psi | 76% | 2556 fps | 99.4% |
| Norma 217 | <<locked>> | 88% | 29,965 psi | 47% | 2293 fps | 96% |
| Norma MRP | <<locked>> | 80% | 40,132 psi | 63% | 2480 fps | 99.2% |
| Norma URP | <<locked>> | 80% | 49,458 psi | 78% | 2552 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,042 psi | 56% | 2395 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 80% | 48,327 psi | 76% | 2559 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,111 psi | 50% | 2287 fps | 96.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,848 psi | 45% | 1506 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,705 psi | 79% | 2589 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,791 psi | 76% | 2608 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 30,023 psi | 47% | 2300 fps | 96.5% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 38,812 psi | 61% | 2500 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 43,366 psi | 68% | 2444 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 80% | 41,771 psi | 65% | 2451 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 80% | 52,692 psi | 83% | 2566 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,517 psi | 81% | 2539 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,966 psi | 78% | 2536 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,372 psi | 79% | 2493 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,423 psi | 65% | 2448 fps | 98.6% |
| Somchem S361 | <<locked>> | 80% | 43,976 psi | 69% | 2434 fps | 97.4% |
| Somchem S365 | <<locked>> | 80% | 46,876 psi | 73% | 2510 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,221 psi | 66% | 2434 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 80% | 50,923 psi | 80% | 2546 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,709 psi | 58% | 2320 fps | 97.8% |
| Vihtavuori N170 | <<locked>> | 96% | 52,866 psi | 83% | 2631 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 50,198 psi | 79% | 2549 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,205 psi | 65% | 2438 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,118 psi | 63% | 2474 fps | 96.6% |
| Vihtavuori N565 | <<locked>> | 82% | 35,404 psi | 55% | 2362 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 90% | 40,292 psi | 63% | 2513 fps | 95.5% |
| Vihtavuori N570 | <<locked>> | 96% | 47,166 psi | 74% | 2680 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,835 psi | 78% | 2503 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,373 psi | 82% | 2621 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,634 psi | 53% | 2415 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,551 psi | 60% | 2365 fps | 97.8% |
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 | 190gr | Berger Long Range Hybrid Target. Hodgdon Retumbo delivers the highest muzzle velocity at 2,844 fps; across all powders the maximum-charge window runs from 1,644 fps to 2,844 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 190.0 gr projectile in 0.284" calls for a 1:8.5 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.