Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 168gr | Berger Classic Hybrid Hunter 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, Winchester StaBALL HD and ReloadSwiss RS 76.
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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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>> | 94% | 57,653 psi | 90% | 2825 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 55,013 psi | 86% | 2799 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 56,173 psi | 88% | 2923 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 90% | 55,840 psi | 88% | 2861 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 94% | 57,305 psi | 90% | 2923 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,503 psi | 81% | 2825 fps | 98.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,122 psi | 72% | 2792 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 55,956 psi | 88% | 2854 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,144 psi | 88% | 2854 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 57,145 psi | 90% | 2864 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,288 psi | 87% | 2848 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,406 psi | 90% | 2917 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,042 psi | 86% | 2831 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 54,520 psi | 85% | 2894 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,564 psi | 87% | 2923 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,245 psi | 87% | 2828 fps | 96.7% |
| Bofors RP15 | <<locked>> | 96% | 56,565 psi | 89% | 2904 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,172 psi | 85% | 2897 fps | 99.3% |
| Bofors RP5 | <<locked>> | 94% | 57,406 psi | 90% | 2917 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 57,043 psi | 89% | 2799 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,884 psi | 89% | 2913 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 84% | 56,637 psi | 89% | 2854 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,419 psi | 87% | 2808 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 57,145 psi | 90% | 2861 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,101 psi | 88% | 2844 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,173 psi | 88% | 2776 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,116 psi | 90% | 3028 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 57,276 psi | 90% | 2894 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,217 psi | 58% | 1762 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,245 psi | 87% | 2785 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,998 psi | 86% | 2769 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 55,492 psi | 87% | 2792 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,534 psi | 85% | 2789 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 94% | 55,303 psi | 87% | 2900 fps | 99.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,553 psi | 65% | 2690 fps | 96.7% |
| Lovex S065 | <<locked>> | 84% | 55,709 psi | 87% | 2766 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 57,508 psi | 90% | 2815 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 55,013 psi | 86% | 2789 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,362 psi | 88% | 2844 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 41,814 psi | 66% | 2720 fps | 98.8% |
| Norma MRP | <<locked>> | 92% | 57,392 psi | 90% | 2936 fps | 100% |
| Norma URP | <<locked>> | 86% | 57,072 psi | 89% | 2835 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 55,999 psi | 88% | 2920 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 55,956 psi | 88% | 2841 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 54,259 psi | 85% | 2854 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,159 psi | 60% | 1804 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,085 psi | 86% | 2822 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,319 psi | 90% | 2904 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 53,882 psi | 84% | 2959 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,910 psi | 83% | 2913 fps | 98.2% |
| Rottweil R 904 | <<locked>> | 90% | 56,811 psi | 89% | 2828 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 90% | 54,853 psi | 86% | 2838 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 57,043 psi | 89% | 2799 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,709 psi | 87% | 2766 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 57,508 psi | 90% | 2815 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 54,940 psi | 86% | 2723 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 54,433 psi | 85% | 2831 fps | 99.6% |
| Somchem S361 | <<locked>> | 88% | 54,708 psi | 86% | 2769 fps | 98.4% |
| Somchem S365 | <<locked>> | 86% | 54,012 psi | 85% | 2785 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,347 psi | 87% | 2808 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 55,912 psi | 88% | 2710 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,100 psi | 86% | 2772 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 54,984 psi | 86% | 2792 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 84% | 54,288 psi | 85% | 2779 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,421 psi | 90% | 2861 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,087 psi | 89% | 2933 fps | 99% |
| Vihtavuori N565 | <<locked>> | 98% | 57,203 psi | 90% | 2917 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,896 psi | 84% | 2917 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,505 psi | 85% | 2733 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,869 psi | 89% | 2854 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 57,290 psi | 90% | 2969 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,288 psi | 87% | 2808 fps | 99.6% |
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% | 36,114 psi | 57% | 2451 fps | 98.3% |
| Accurate 4350 | <<locked>> | 80% | 48,196 psi | 76% | 2694 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 42,380 psi | 66% | 2671 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 80% | 40,103 psi | 63% | 2575 fps | 97% |
| ADI AR 2213 | <<locked>> | 84% | 40,901 psi | 64% | 2625 fps | 96% |
| ADI AR 2217 | <<locked>> | 92% | 39,378 psi | 62% | 2589 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 88% | 31,169 psi | 49% | 2431 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,495 psi | 63% | 2575 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,108 psi | 72% | 2697 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,301 psi | 84% | 2812 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,132 psi | 63% | 2569 fps | 97.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,955 psi | 56% | 2513 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,606 psi | 54% | 2477 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,139 psi | 47% | 2392 fps | 97% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,174 psi | 60% | 2618 fps | 99.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 48,718 psi | 76% | 2713 fps | 95% |
| Bofors RP15 | <<locked>> | 82% | 35,824 psi | 56% | 2510 fps | 95.6% |
| Bofors RP30 | <<locked>> | 90% | 38,537 psi | 60% | 2602 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 35,955 psi | 56% | 2513 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 50,372 psi | 79% | 2694 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 88% | 37,681 psi | 59% | 2552 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 49,719 psi | 78% | 2743 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 52,098 psi | 82% | 2756 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 82% | 40,756 psi | 64% | 2569 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 82% | 40,001 psi | 63% | 2552 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,468 psi | 68% | 2582 fps | 100% |
| Hodgdon Retumbo | 60.5 gr | 84% | 33,562 psi | 53% | 2530 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 49,414 psi | 77% | 2769 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,934 psi | 44% | 1575 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,890 psi | 72% | 2631 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,779 psi | 81% | 2717 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 45,672 psi | 72% | 2638 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 39,885 psi | 63% | 2516 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 84% | 39,407 psi | 62% | 2602 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 98% | 38,899 psi | 61% | 2631 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 49,269 psi | 77% | 2667 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,601 psi | 75% | 2657 fps | 99.7% |
| Lovex S071 | <<locked>> | 80% | 31,169 psi | 49% | 2333 fps | 96.7% |
| Norma 204 | <<locked>> | 80% | 45,905 psi | 72% | 2667 fps | 98.3% |
| Norma 217 | <<locked>> | 92% | 32,068 psi | 50% | 2484 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 37,739 psi | 59% | 2582 fps | 97.8% |
| Norma URP | <<locked>> | 80% | 46,934 psi | 74% | 2677 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 39,044 psi | 61% | 2608 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 45,803 psi | 72% | 2677 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 32,532 psi | 51% | 2428 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,645 psi | 45% | 1614 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,022 psi | 75% | 2713 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,195 psi | 72% | 2733 fps | 100% |
| ReloadSwiss RS 76 | 64.7 gr | 84% | 32,561 psi | 51% | 2503 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 42,134 psi | 66% | 2713 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 41,423 psi | 65% | 2552 fps | 96.3% |
| Rottweil R 905 | <<locked>> | 80% | 39,392 psi | 62% | 2552 fps | 97% |
| Rottweil R 907 | <<locked>> | 80% | 50,372 psi | 79% | 2694 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,269 psi | 77% | 2667 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,601 psi | 75% | 2657 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,240 psi | 76% | 2618 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,059 psi | 61% | 2549 fps | 96.9% |
| Somchem S361 | <<locked>> | 80% | 42,003 psi | 66% | 2543 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 44,295 psi | 69% | 2638 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,016 psi | 63% | 2539 fps | 98% |
| Vihtavuori N150 | <<locked>> | 80% | 52,272 psi | 82% | 2661 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,530 psi | 76% | 2674 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,766 psi | 54% | 2418 fps | 96% |
| Vihtavuori N550 | <<locked>> | 80% | 47,761 psi | 75% | 2674 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,972 psi | 61% | 2552 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 40,553 psi | 64% | 2631 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 88% | 40,741 psi | 64% | 2621 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 94% | 43,555 psi | 68% | 2730 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,485 psi | 74% | 2628 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,719 psi | 78% | 2743 fps | 99.8% |
| Winchester StaBALL HD | 59.1 gr | 80% | 30,792 psi | 48% | 2500 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,579 psi | 57% | 2464 fps | 95.9% |
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 | 168gr | Berger Classic Hybrid Hunter. Hodgdon Retumbo delivers the highest muzzle velocity at 3,028 fps; across all powders the maximum-charge window runs from 1,762 fps to 3,028 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 168.0 gr projectile in 0.284" calls for a 1:10.0 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, Winchester StaBALL HD, ReloadSwiss RS 76 rank at the top here: for 7 mm Weath. Mag. with the .284 | 168gr | Berger Classic Hybrid Hunter 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.