Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 160gr | Barnes Solid bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Alliant Reloder-26 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>> | 96% | 57,363 psi | 90% | 2881 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,998 psi | 86% | 2858 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 55,738 psi | 87% | 2972 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 82% | 56,086 psi | 88% | 2815 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,637 psi | 87% | 2910 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 57,159 psi | 90% | 2972 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,848 psi | 75% | 2808 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,525 psi | 67% | 2766 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,580 psi | 90% | 2841 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 55,854 psi | 88% | 2913 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 57,101 psi | 89% | 2930 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,303 psi | 87% | 2904 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 57,058 psi | 89% | 2969 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,418 psi | 85% | 2887 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,766 psi | 84% | 2946 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,737 psi | 86% | 2972 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 55,448 psi | 87% | 2874 fps | 95.9% |
| Bofors RP15 | <<locked>> | 98% | 55,912 psi | 88% | 2949 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,603 psi | 78% | 2877 fps | 98.2% |
| Bofors RP5 | <<locked>> | 96% | 57,058 psi | 89% | 2969 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 57,537 psi | 90% | 2861 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,649 psi | 83% | 2897 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 86% | 56,826 psi | 89% | 2913 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 55,695 psi | 87% | 2867 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 94% | 57,130 psi | 90% | 2910 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,072 psi | 88% | 2897 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,014 psi | 88% | 2835 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,504 psi | 82% | 3009 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 86% | 57,203 psi | 90% | 2949 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,101 psi | 58% | 1791 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,361 psi | 87% | 2841 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,463 psi | 87% | 2828 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 55,361 psi | 87% | 2851 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,578 psi | 86% | 2838 fps | 98% |
| IMR 7828 SSC | <<locked>> | 96% | 54,723 psi | 86% | 2946 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 56,072 psi | 88% | 2828 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 57,609 psi | 90% | 2874 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,665 psi | 86% | 2841 fps | 100% |
| Norma 204 | <<locked>> | 88% | 56,463 psi | 88% | 2900 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 38,130 psi | 60% | 2690 fps | 97.2% |
| Norma MRP | <<locked>> | 94% | 56,884 psi | 89% | 2992 fps | 100% |
| Norma URP | <<locked>> | 88% | 57,000 psi | 89% | 2894 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 55,579 psi | 87% | 2972 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 55,898 psi | 88% | 2900 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 53,650 psi | 84% | 2904 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,797 psi | 59% | 1831 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 56,536 psi | 89% | 2913 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,027 psi | 86% | 2884 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 57,087 psi | 89% | 2966 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,026 psi | 83% | 3005 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,906 psi | 75% | 2881 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 82% | 55,317 psi | 87% | 2808 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,072 psi | 89% | 2884 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 92% | 54,752 psi | 86% | 2890 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 57,537 psi | 90% | 2861 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,072 psi | 88% | 2828 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 57,609 psi | 90% | 2874 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,782 psi | 89% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,216 psi | 87% | 2680 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,230 psi | 87% | 2782 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,302 psi | 85% | 2884 fps | 99.3% |
| Somchem S355 | <<locked>> | 82% | 55,042 psi | 86% | 2802 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,013 psi | 86% | 2822 fps | 97.9% |
| Somchem S365 | <<locked>> | 90% | 57,319 psi | 90% | 2894 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,303 psi | 87% | 2864 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 56,246 psi | 88% | 2776 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,259 psi | 87% | 2835 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,795 psi | 86% | 2844 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 54,462 psi | 85% | 2841 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 56,840 psi | 89% | 2917 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 56,695 psi | 89% | 2986 fps | 98.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,289 psi | 88% | 2959 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,182 psi | 77% | 2890 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,563 psi | 86% | 2792 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 56,826 psi | 89% | 2913 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 55,666 psi | 87% | 3022 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,216 psi | 87% | 2861 fps | 99.3% |
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% | 33,373 psi | 52% | 2438 fps | 96.8% |
| Accurate 4350 | <<locked>> | 80% | 44,831 psi | 70% | 2694 fps | 99.9% |
| Accurate MAGPRO | 65.1 gr | 88% | 45,005 psi | 71% | 2779 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 52,866 psi | 83% | 2769 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 37,420 psi | 59% | 2562 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 88% | 43,540 psi | 68% | 2726 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 96% | 41,829 psi | 66% | 2687 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 92% | 32,880 psi | 52% | 2523 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,998 psi | 85% | 2792 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,018 psi | 67% | 2700 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,429 psi | 77% | 2815 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,434 psi | 59% | 2559 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 84% | 38,058 psi | 60% | 2615 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,039 psi | 50% | 2467 fps | 99.3% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,849 psi | 47% | 2428 fps | 95.9% |
| Alliant Reloder-26 | 59.9 gr | 80% | 34,882 psi | 55% | 2598 fps | 98.6% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 52,069 psi | 82% | 2815 fps | 95% |
| Bofors RP15 | <<locked>> | 86% | 37,739 psi | 59% | 2605 fps | 95.5% |
| Bofors RP30 | <<locked>> | 94% | 40,582 psi | 64% | 2700 fps | 95.8% |
| Bofors RP5 | <<locked>> | 84% | 38,058 psi | 60% | 2615 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 47,703 psi | 75% | 2697 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 92% | 40,147 psi | 63% | 2651 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 46,557 psi | 73% | 2743 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 80% | 49,023 psi | 77% | 2756 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 86% | 43,526 psi | 68% | 2674 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 86% | 42,699 psi | 67% | 2657 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,538 psi | 64% | 2585 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 35,375 psi | 55% | 2625 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 45,934 psi | 72% | 2762 fps | 98.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,789 psi | 44% | 1598 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,134 psi | 68% | 2628 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,907 psi | 77% | 2720 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 42,598 psi | 67% | 2638 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,554 psi | 67% | 2618 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 88% | 41,800 psi | 66% | 2700 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 46,630 psi | 73% | 2674 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 44,904 psi | 70% | 2661 fps | 99% |
| Lovex S071 | <<locked>> | 82% | 30,719 psi | 48% | 2372 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 43,004 psi | 67% | 2661 fps | 96.9% |
| Norma 217 | <<locked>> | 96% | 33,344 psi | 52% | 2569 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 34,664 psi | 54% | 2562 fps | 96% |
| Norma URP | <<locked>> | 80% | 44,005 psi | 69% | 2680 fps | 99.9% |
| Ramshot Grand | <<locked>> | 88% | 41,626 psi | 65% | 2713 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 42,757 psi | 67% | 2674 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 86% | 34,548 psi | 54% | 2530 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,268 psi | 44% | 1634 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,504 psi | 82% | 2858 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,759 psi | 70% | 2713 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,801 psi | 67% | 2726 fps | 99.8% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 34,490 psi | 54% | 2602 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 44,454 psi | 70% | 2815 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 51,793 psi | 81% | 2756 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 41,423 psi | 65% | 2602 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 36,738 psi | 58% | 2543 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 47,703 psi | 75% | 2697 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,630 psi | 73% | 2674 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 44,904 psi | 70% | 2661 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,055 psi | 83% | 2812 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,982 psi | 81% | 2638 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,556 psi | 71% | 2618 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,419 psi | 57% | 2539 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 51,634 psi | 81% | 2753 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 45,020 psi | 71% | 2648 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 40,930 psi | 64% | 2638 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,304 psi | 58% | 2530 fps | 96.5% |
| Vihtavuori N150 | <<locked>> | 80% | 49,429 psi | 77% | 2677 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,426 psi | 71% | 2677 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 82% | 34,505 psi | 54% | 2461 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 44,773 psi | 70% | 2677 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 35,926 psi | 56% | 2543 fps | 99.3% |
| Vihtavuori N560 | <<locked>> | 86% | 43,062 psi | 67% | 2740 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 92% | 42,946 psi | 67% | 2723 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 98% | 45,934 psi | 72% | 2828 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,527 psi | 70% | 2638 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,557 psi | 73% | 2743 fps | 99.1% |
| Winchester StaBALL HD | 57.5 gr | 80% | 28,369 psi | 44% | 2474 fps | 99.4% |
| Winchester Supreme 780 | <<locked>> | 82% | 36,419 psi | 57% | 2510 fps | 95% |
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 77 powders for 7 mm Weath. Mag. loaded with the .284 | 160gr | Barnes Solid. Winchester StaBALL HD delivers the highest muzzle velocity at 3,022 fps; across all powders the maximum-charge window runs from 1,791 fps to 3,022 fps. ADI AR 2217 gives the best case fill at 100 %, and 77 of the 77 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 160.0 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, Alliant Reloder-25 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. Accurate MAGPRO, Alliant Reloder-26, Winchester StaBALL HD rank at the top here: for 7 mm Weath. Mag. with the .284 | 160gr | Barnes Solid 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.