Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 139gr | Reichenberg HDB Universal bullet and 80 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
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>> | 96% | 54,665 psi | 86% | 3031 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 56,028 psi | 88% | 3077 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 56,826 psi | 89% | 3179 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 57,450 psi | 90% | 3041 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,913 psi | 89% | 3127 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 96% | 54,534 psi | 85% | 3120 fps | 97.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,524 psi | 64% | 2884 fps | 97.2% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 57,159 psi | 90% | 3123 fps | 98.8% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 57,159 psi | 90% | 3123 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,274 psi | 87% | 3015 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,898 psi | 89% | 3136 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,259 psi | 85% | 3097 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,405 psi | 88% | 3114 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,259 psi | 85% | 3117 fps | 98.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,376 psi | 87% | 3104 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,995 psi | 80% | 3091 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,680 psi | 87% | 3189 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,884 psi | 89% | 3159 fps | 98.8% |
| Bofors RP3 | <<locked>> | 82% | 56,405 psi | 88% | 3035 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,949 psi | 74% | 3009 fps | 96.4% |
| Bofors RP5 | <<locked>> | 96% | 54,259 psi | 85% | 3117 fps | 98.6% |
| Bofors RP7 | <<locked>> | 86% | 55,405 psi | 87% | 3022 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,212 psi | 79% | 3031 fps | 97.3% |
| Hodgdon H380 | <<locked>> | 82% | 56,362 psi | 88% | 3051 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 54,201 psi | 85% | 3071 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 57,029 psi | 89% | 3084 fps | 99% |
| Hodgdon H4831 | <<locked>> | 94% | 54,723 psi | 86% | 3061 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 57,261 psi | 90% | 3104 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 57,232 psi | 90% | 3054 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,937 psi | 78% | 3143 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 86% | 54,607 psi | 86% | 3107 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,724 psi | 58% | 1932 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,956 psi | 89% | 3025 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,608 psi | 89% | 3058 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,840 psi | 89% | 3048 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 56,492 psi | 89% | 3068 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,941 psi | 88% | 3051 fps | 97.2% |
| IMR 7828 SSC | <<locked>> | 98% | 55,854 psi | 88% | 3156 fps | 97.8% |
| Lovex S062 | <<locked>> | 82% | 57,261 psi | 90% | 3015 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,261 psi | 90% | 3045 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,347 psi | 87% | 3038 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,953 psi | 81% | 2989 fps | 99.6% |
| Norma 204 | <<locked>> | 88% | 54,157 psi | 85% | 3054 fps | 98.2% |
| Norma MRP | <<locked>> | 94% | 54,012 psi | 85% | 3143 fps | 99.4% |
| Norma URP | <<locked>> | 88% | 54,520 psi | 85% | 3058 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,884 psi | 89% | 3182 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 57,116 psi | 90% | 3117 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,969 psi | 86% | 3110 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,536 psi | 59% | 1978 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,028 psi | 88% | 3031 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,667 psi | 90% | 3143 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,956 psi | 88% | 3097 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,375 psi | 85% | 3127 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,372 psi | 79% | 3140 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 84% | 56,507 psi | 89% | 3031 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,607 psi | 86% | 3035 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 94% | 55,651 psi | 87% | 3097 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 86% | 55,405 psi | 87% | 3022 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,261 psi | 90% | 3045 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,261 psi | 90% | 3015 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,347 psi | 87% | 3038 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,418 psi | 85% | 3035 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,637 psi | 89% | 2904 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,855 psi | 89% | 2999 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,201 psi | 87% | 3091 fps | 98.7% |
| Somchem S355 | <<locked>> | 84% | 56,144 psi | 88% | 3022 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,289 psi | 88% | 3025 fps | 97.1% |
| Somchem S365 | <<locked>> | 90% | 54,476 psi | 85% | 3061 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,304 psi | 88% | 3071 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 86% | 57,609 psi | 90% | 2995 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,391 psi | 88% | 3051 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,753 psi | 87% | 3048 fps | 99% |
| Vihtavuori N550 | <<locked>> | 88% | 55,564 psi | 87% | 3054 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 57,725 psi | 90% | 3130 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,012 psi | 85% | 3130 fps | 96.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,548 psi | 84% | 3104 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,115 psi | 88% | 3012 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,447 psi | 85% | 3074 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 56,144 psi | 88% | 3238 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,536 psi | 89% | 3071 fps | 98.7% |
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>> | 82% | 33,866 psi | 53% | 2612 fps | 95.5% |
| Accurate 4350 | <<locked>> | 80% | 42,569 psi | 67% | 2835 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 92% | 49,385 psi | 77% | 3045 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 50,894 psi | 80% | 2936 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,741 psi | 64% | 2812 fps | 95% |
| ADI AR 2213 | <<locked>> | 92% | 47,616 psi | 75% | 2989 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 98% | 37,913 psi | 59% | 2815 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 41,191 psi | 65% | 2818 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 41,191 psi | 65% | 2818 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,779 psi | 81% | 2959 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,944 psi | 64% | 2841 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,050 psi | 74% | 2972 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,770 psi | 64% | 2808 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 88% | 41,321 psi | 65% | 2861 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,313 psi | 48% | 2582 fps | 97.8% |
| Alliant Reloder-25 | <<locked>> | 86% | 32,285 psi | 51% | 2654 fps | 95.4% |
| Alliant Reloder-26 | 63.7 gr | 80% | 32,938 psi | 52% | 2713 fps | 96.6% |
| Bofors RP15 | <<locked>> | 90% | 40,973 psi | 64% | 2851 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 52,794 psi | 83% | 2976 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 43,816 psi | 69% | 2943 fps | 95.4% |
| Bofors RP5 | <<locked>> | 88% | 41,321 psi | 65% | 2861 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 45,745 psi | 72% | 2844 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 96% | 43,758 psi | 69% | 2900 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 52,808 psi | 83% | 2989 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,454 psi | 70% | 2884 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 80% | 47,123 psi | 74% | 2907 fps | 97.3% |
| Hodgdon H4831 | <<locked>> | 90% | 47,732 psi | 75% | 2936 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 92% | 49,951 psi | 78% | 2976 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,566 psi | 60% | 2726 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 94% | 41,046 psi | 64% | 2940 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 43,482 psi | 68% | 2897 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,630 psi | 43% | 1732 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,563 psi | 84% | 2969 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,350 psi | 65% | 2766 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,166 psi | 74% | 2874 fps | 98.3% |
| IMR 4831 | <<locked>> | 80% | 40,640 psi | 64% | 2779 fps | 99.1% |
| IMR 4955 Enduron | <<locked>> | 90% | 49,211 psi | 77% | 2927 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 92% | 45,687 psi | 72% | 2959 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 53,940 psi | 85% | 2963 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,686 psi | 70% | 2822 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 43,076 psi | 68% | 2805 fps | 97.7% |
| Lovex S071 | <<locked>> | 86% | 33,069 psi | 52% | 2592 fps | 95.2% |
| Norma 204 | <<locked>> | 80% | 41,031 psi | 64% | 2795 fps | 95% |
| Norma MRP | 64.9 gr | 84% | 37,898 psi | 59% | 2812 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 42,032 psi | 66% | 2828 fps | 99.2% |
| Ramshot Grand | <<locked>> | 92% | 45,730 psi | 72% | 2972 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 40,770 psi | 64% | 2808 fps | 97.7% |
| Ramshot Magnum | <<locked>> | 90% | 37,884 psi | 59% | 2769 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,036 psi | 44% | 1772 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,576 psi | 82% | 2976 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,893 psi | 78% | 3025 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,395 psi | 66% | 2851 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,886 psi | 64% | 2864 fps | 98.8% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 37,869 psi | 59% | 2848 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 49,690 psi | 78% | 2920 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 45,194 psi | 71% | 2858 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 84% | 39,929 psi | 63% | 2792 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 45,745 psi | 72% | 2844 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,686 psi | 70% | 2822 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 53,940 psi | 85% | 2963 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 43,076 psi | 68% | 2805 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,792 psi | 80% | 2976 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,053 psi | 78% | 2805 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,714 psi | 69% | 2762 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 42,409 psi | 66% | 2851 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 49,530 psi | 78% | 2913 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 49,385 psi | 77% | 2907 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 38,740 psi | 61% | 2779 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 38,058 psi | 60% | 2717 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 47,471 psi | 74% | 2841 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,381 psi | 68% | 2822 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 88% | 40,045 psi | 63% | 2753 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 42,830 psi | 67% | 2825 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 80% | 34,026 psi | 53% | 2667 fps | 97.9% |
| Vihtavuori N560 | 69.5 gr | 90% | 46,992 psi | 74% | 2999 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 96% | 46,717 psi | 73% | 2972 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,409 psi | 66% | 2782 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,454 psi | 70% | 2884 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,876 psi | 42% | 2566 fps | 97.2% |
| Winchester Supreme 780 | <<locked>> | 88% | 42,685 psi | 67% | 2815 fps | 95.7% |
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 80 powders for 7 mm Weath. Mag. loaded with the .284 | 139gr | Reichenberg HDB Universal. Winchester StaBALL HD delivers the highest muzzle velocity at 3,238 fps; across all powders the maximum-charge window runs from 1,932 fps to 3,238 fps. ADI AR 2225 gives the best case fill at 100 %, and 80 of the 80 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 139.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Bofors RP15 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for 7 mm Weath. Mag. with the .284 | 139gr | 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.