Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 154gr | Reichenberg HDB Universal 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 High Country, Winchester StaBALL HD and IMR 7828 SSC.
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>> | 94% | 53,911 psi | 84% | 2887 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,521 psi | 87% | 2927 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 55,405 psi | 87% | 3038 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 94% | 56,304 psi | 88% | 3035 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 82% | 56,376 psi | 88% | 2881 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,072 psi | 88% | 2976 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 57,566 psi | 90% | 3038 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,312 psi | 76% | 2871 fps | 97.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,873 psi | 67% | 2825 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 56,376 psi | 88% | 2972 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,130 psi | 88% | 2976 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 57,551 psi | 90% | 2995 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,666 psi | 87% | 2966 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 57,479 psi | 90% | 3035 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,998 psi | 86% | 2953 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,302 psi | 85% | 3012 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,390 psi | 87% | 3041 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 56,347 psi | 88% | 3015 fps | 99.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,314 psi | 79% | 2943 fps | 98.1% |
| Bofors RP5 | <<locked>> | 96% | 57,479 psi | 90% | 3035 fps | 99.5% |
| Bofors RP7 | <<locked>> | 84% | 54,331 psi | 85% | 2867 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,272 psi | 83% | 2963 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 86% | 57,159 psi | 90% | 2979 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 56,202 psi | 88% | 2936 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 94% | 57,580 psi | 90% | 2976 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,550 psi | 89% | 2959 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,449 psi | 88% | 2900 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,968 psi | 83% | 3071 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 86% | 57,711 psi | 90% | 3018 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,014 psi | 58% | 1837 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,941 psi | 88% | 2910 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,811 psi | 87% | 2894 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 55,767 psi | 87% | 2913 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,955 psi | 86% | 2900 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 96% | 55,477 psi | 87% | 3015 fps | 98.5% |
| Lovex S065 | <<locked>> | 86% | 56,333 psi | 88% | 2890 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,607 psi | 86% | 2887 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,926 psi | 86% | 2900 fps | 100% |
| Norma 204 | <<locked>> | 88% | 56,927 psi | 89% | 2966 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 38,624 psi | 61% | 2749 fps | 97.1% |
| Norma MRP | <<locked>> | 94% | 57,508 psi | 90% | 3058 fps | 100% |
| Norma URP | <<locked>> | 88% | 57,377 psi | 90% | 2959 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,144 psi | 88% | 3038 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 56,362 psi | 88% | 2966 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,259 psi | 85% | 2966 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,869 psi | 59% | 1880 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 57,101 psi | 89% | 2979 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,303 psi | 87% | 2943 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 57,464 psi | 90% | 3031 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,635 psi | 84% | 3071 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,704 psi | 76% | 2946 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 82% | 55,521 psi | 87% | 2871 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,261 psi | 90% | 2946 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 92% | 55,187 psi | 86% | 2953 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 54,331 psi | 85% | 2867 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,333 psi | 88% | 2890 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,607 psi | 86% | 2887 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,087 psi | 89% | 2930 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,593 psi | 87% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,680 psi | 87% | 2844 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,752 psi | 86% | 2949 fps | 99.2% |
| Somchem S355 | <<locked>> | 82% | 55,332 psi | 87% | 2867 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,376 psi | 87% | 2884 fps | 97.8% |
| Somchem S365 | <<locked>> | 88% | 54,259 psi | 85% | 2910 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,680 psi | 87% | 2927 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 56,608 psi | 89% | 2838 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,753 psi | 87% | 2900 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,259 psi | 87% | 2910 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 54,810 psi | 86% | 2904 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 57,246 psi | 90% | 2979 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 57,348 psi | 90% | 3051 fps | 98.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,913 psi | 89% | 3028 fps | 98.5% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,893 psi | 78% | 2956 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,143 psi | 86% | 2858 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 57,159 psi | 90% | 2979 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 56,275 psi | 88% | 3087 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,651 psi | 87% | 2923 fps | 99.2% |
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% | 33,591 psi | 53% | 2490 fps | 96.6% |
| Accurate 4350 | <<locked>> | 80% | 45,107 psi | 71% | 2753 fps | 99.9% |
| Accurate High Country | 63.2 gr | 84% | 41,785 psi | 65% | 2776 fps | 95.4% |
| Accurate MAGPRO | <<locked>> | 88% | 45,527 psi | 71% | 2841 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 53,026 psi | 83% | 2831 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 37,652 psi | 59% | 2618 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 88% | 43,990 psi | 69% | 2789 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 96% | 42,163 psi | 66% | 2743 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 92% | 33,127 psi | 52% | 2575 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 37,985 psi | 60% | 2621 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,178 psi | 68% | 2759 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,777 psi | 78% | 2877 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,637 psi | 59% | 2615 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 84% | 38,479 psi | 60% | 2674 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,300 psi | 51% | 2520 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,994 psi | 47% | 2477 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,244 psi | 55% | 2657 fps | 98.5% |
| Bofors RP15 | <<locked>> | 86% | 38,145 psi | 60% | 2664 fps | 95.3% |
| Bofors RP30 | <<locked>> | 94% | 40,857 psi | 64% | 2756 fps | 95.6% |
| Bofors RP5 | <<locked>> | 84% | 38,479 psi | 60% | 2674 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 48,037 psi | 75% | 2759 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 92% | 40,408 psi | 63% | 2710 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 46,731 psi | 73% | 2802 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 49,458 psi | 78% | 2818 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 86% | 43,874 psi | 69% | 2733 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 88% | 46,166 psi | 72% | 2779 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,712 psi | 64% | 2641 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 38,116 psi | 60% | 2746 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 46,253 psi | 72% | 2825 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,833 psi | 44% | 1644 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,381 psi | 68% | 2687 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,197 psi | 77% | 2782 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 42,888 psi | 67% | 2697 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,815 psi | 67% | 2674 fps | 95% |
| IMR 7828 SSC | 63.8 gr | 88% | 42,279 psi | 66% | 2766 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 46,920 psi | 74% | 2736 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 45,179 psi | 71% | 2723 fps | 98.9% |
| Lovex S071 | <<locked>> | 82% | 30,980 psi | 49% | 2421 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 43,308 psi | 68% | 2723 fps | 96.8% |
| Norma 217 | <<locked>> | 98% | 36,013 psi | 56% | 2684 fps | 96% |
| Norma MRP | <<locked>> | 80% | 34,954 psi | 55% | 2615 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 44,324 psi | 69% | 2740 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 42,018 psi | 66% | 2772 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 43,120 psi | 68% | 2733 fps | 99% |
| Ramshot Magnum | <<locked>> | 86% | 34,896 psi | 55% | 2582 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,297 psi | 44% | 1680 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,881 psi | 83% | 2923 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,049 psi | 71% | 2772 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,279 psi | 68% | 2789 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 34,867 psi | 55% | 2657 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 45,078 psi | 71% | 2877 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 52,127 psi | 82% | 2818 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 41,611 psi | 65% | 2657 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 36,999 psi | 58% | 2602 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 48,037 psi | 75% | 2759 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,920 psi | 74% | 2736 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 45,179 psi | 71% | 2723 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,417 psi | 84% | 2874 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,214 psi | 82% | 2700 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,948 psi | 72% | 2680 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,680 psi | 57% | 2595 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 51,996 psi | 81% | 2815 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 45,426 psi | 71% | 2710 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 41,234 psi | 65% | 2697 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,637 psi | 59% | 2585 fps | 96.3% |
| Vihtavuori N150 | <<locked>> | 80% | 49,705 psi | 78% | 2736 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,672 psi | 72% | 2736 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 37,130 psi | 58% | 2569 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 45,165 psi | 71% | 2740 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 36,230 psi | 57% | 2598 fps | 99.2% |
| Vihtavuori N560 | <<locked>> | 86% | 43,526 psi | 68% | 2799 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 92% | 43,410 psi | 68% | 2782 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 98% | 46,499 psi | 73% | 2890 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,715 psi | 70% | 2697 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,920 psi | 74% | 2805 fps | 99% |
| Winchester StaBALL HD | 59.6 gr | 80% | 28,660 psi | 45% | 2526 fps | 99.3% |
| Winchester Supreme 780 | <<locked>> | 84% | 39,349 psi | 62% | 2625 fps | 95.8% |
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 77 powders for 7 mm Weath. Mag. loaded with the .284 | 154gr | Reichenberg HDB Universal. Winchester StaBALL HD delivers the highest muzzle velocity at 3,087 fps; across all powders the maximum-charge window runs from 1,837 fps to 3,087 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 154.0 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, 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 High Country, Winchester StaBALL HD, IMR 7828 SSC rank at the top here: for 7 mm Weath. Mag. with the .284 | 154gr | Reichenberg HDB Universal 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.