Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 140gr | Barnes Solid bullet and 84 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country and Norma MRP.
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 2700 | <<locked>> | 82% | 56,811 psi | 89% | 2989 fps | 99.1% |
| Accurate 3100 | <<locked>> | 98% | 56,565 psi | 89% | 3048 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 56,695 psi | 89% | 2972 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,418 psi | 85% | 3038 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 53,896 psi | 84% | 3130 fps | 97.4% |
| Accurate MAGPRO | <<locked>> | 96% | 54,998 psi | 86% | 3133 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 56,362 psi | 88% | 3005 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,143 psi | 86% | 3081 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 98% | 56,608 psi | 89% | 3140 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,233 psi | 61% | 2838 fps | 96.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 55,448 psi | 87% | 3081 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,305 psi | 90% | 3028 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,508 psi | 90% | 3054 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,013 psi | 86% | 3094 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,521 psi | 89% | 3117 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,781 psi | 86% | 3071 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,130 psi | 88% | 3133 fps | 98.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 56,884 psi | 89% | 3110 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,313 psi | 77% | 3048 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 57,711 psi | 90% | 3209 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,013 psi | 86% | 3114 fps | 98.5% |
| Bofors RP3 | <<locked>> | 82% | 54,752 psi | 86% | 2992 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 56,130 psi | 88% | 3133 fps | 98.7% |
| Bofors RP7 | <<locked>> | 88% | 57,464 psi | 90% | 3038 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,747 psi | 76% | 2986 fps | 96.8% |
| Hodgdon H380 | <<locked>> | 82% | 55,042 psi | 86% | 3012 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,246 psi | 88% | 3087 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 86% | 55,593 psi | 87% | 3045 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 96% | 56,695 psi | 89% | 3077 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,666 psi | 87% | 3061 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,521 psi | 87% | 3015 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,298 psi | 76% | 3094 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 88% | 56,724 psi | 89% | 3123 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,796 psi | 58% | 1916 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,796 psi | 87% | 2989 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,376 psi | 87% | 3018 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,492 psi | 87% | 3009 fps | 99.4% |
| IMR 4831 | <<locked>> | 90% | 54,795 psi | 86% | 3028 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,404 psi | 85% | 3005 fps | 96.8% |
| IMR 7828 SSC | <<locked>> | 98% | 54,288 psi | 85% | 3114 fps | 97.3% |
| Lovex S062 | <<locked>> | 82% | 56,072 psi | 88% | 2979 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,883 psi | 88% | 3005 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 57,406 psi | 90% | 3054 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,241 psi | 79% | 2946 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 56,855 psi | 89% | 3038 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,130 psi | 88% | 3071 fps | 98.4% |
| Norma MRP | <<locked>> | 96% | 55,912 psi | 88% | 3159 fps | 99.5% |
| Norma URP | <<locked>> | 90% | 56,507 psi | 89% | 3074 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,766 psi | 86% | 3130 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 90% | 55,347 psi | 87% | 3074 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,011 psi | 83% | 3061 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,405 psi | 59% | 1959 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,621 psi | 86% | 2992 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,970 psi | 88% | 3104 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,346 psi | 85% | 3058 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,420 psi | 88% | 3143 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,515 psi | 76% | 3087 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 84% | 55,100 psi | 86% | 2992 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,652 psi | 89% | 3048 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 94% | 54,143 psi | 85% | 3058 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 57,464 psi | 90% | 3038 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,883 psi | 88% | 3005 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 56,072 psi | 88% | 2979 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,406 psi | 90% | 3054 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,579 psi | 89% | 3051 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,274 psi | 87% | 2867 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,376 psi | 87% | 2956 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,305 psi | 90% | 3110 fps | 98.9% |
| Somchem S355 | <<locked>> | 84% | 54,810 psi | 86% | 2986 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,984 psi | 86% | 2986 fps | 96.7% |
| Somchem S365 | <<locked>> | 92% | 56,550 psi | 89% | 3077 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,650 psi | 86% | 3031 fps | 99% |
| Vihtavuori N150 | <<locked>> | 86% | 56,144 psi | 88% | 2959 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,969 psi | 86% | 3012 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,201 psi | 85% | 3009 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 82% | 56,855 psi | 89% | 2959 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 57,667 psi | 90% | 3071 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,869 psi | 88% | 3087 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,927 psi | 88% | 3150 fps | 97.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,561 psi | 81% | 3054 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,505 psi | 85% | 2972 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,507 psi | 89% | 3091 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,534 psi | 84% | 3189 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,723 psi | 86% | 3025 fps | 98.3% |
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 2700 | <<locked>> | 80% | 53,156 psi | 83% | 2930 fps | 98.7% |
| Accurate 3100 | <<locked>> | 82% | 32,735 psi | 51% | 2572 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 53,258 psi | 83% | 2923 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,394 psi | 65% | 2795 fps | 99.1% |
| Accurate High Country | 67.3 gr | 90% | 46,833 psi | 73% | 2995 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 94% | 51,053 psi | 80% | 3061 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 49,777 psi | 78% | 2897 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 42,337 psi | 66% | 2831 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 92% | 46,311 psi | 73% | 2946 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 98% | 36,709 psi | 58% | 2766 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 42,772 psi | 67% | 2838 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,589 psi | 79% | 2923 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 54,070 psi | 85% | 2999 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,842 psi | 62% | 2805 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,672 psi | 72% | 2933 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 42,322 psi | 66% | 2831 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 90% | 42,786 psi | 67% | 2881 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,399 psi | 46% | 2546 fps | 97.4% |
| Alliant Reloder-25 | <<locked>> | 88% | 33,315 psi | 52% | 2674 fps | 95.8% |
| Alliant Reloder-26 | 61.7 gr | 80% | 31,778 psi | 50% | 2667 fps | 96% |
| Bofors RP15 | <<locked>> | 92% | 42,206 psi | 66% | 2867 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 51,343 psi | 80% | 2936 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 42,786 psi | 67% | 2881 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 44,744 psi | 70% | 2805 fps | 97.3% |
| Hodgdon H1000 | <<locked>> | 98% | 45,397 psi | 71% | 2917 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 51,459 psi | 81% | 2953 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 43,004 psi | 67% | 2841 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 80% | 45,890 psi | 72% | 2864 fps | 96.9% |
| Hodgdon H4831 | <<locked>> | 92% | 49,516 psi | 78% | 2953 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,617 psi | 76% | 2933 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,434 psi | 59% | 2690 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,711 psi | 62% | 2887 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 42,221 psi | 66% | 2858 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,412 psi | 43% | 1709 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,373 psi | 82% | 2933 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,190 psi | 63% | 2726 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,151 psi | 72% | 2838 fps | 98% |
| IMR 4831 | <<locked>> | 80% | 39,537 psi | 62% | 2743 fps | 98.8% |
| IMR 4955 Enduron | <<locked>> | 90% | 48,109 psi | 75% | 2890 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 94% | 47,369 psi | 74% | 2982 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 52,678 psi | 83% | 2927 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,671 psi | 68% | 2785 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 41,872 psi | 66% | 2766 fps | 97.3% |
| Lovex S071 | <<locked>> | 88% | 34,214 psi | 54% | 2612 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 53,432 psi | 84% | 2986 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,757 psi | 67% | 2822 fps | 95.4% |
| Norma MRP | 62.8 gr | 84% | 36,521 psi | 57% | 2762 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 40,727 psi | 64% | 2782 fps | 98.9% |
| Ramshot Grand | <<locked>> | 94% | 47,326 psi | 74% | 2989 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 39,581 psi | 62% | 2769 fps | 97.3% |
| Ramshot Magnum | <<locked>> | 92% | 39,320 psi | 62% | 2792 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 44% | 1752 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,372 psi | 81% | 2936 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,486 psi | 76% | 2989 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,162 psi | 65% | 2812 fps | 98.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,653 psi | 62% | 2822 fps | 98.4% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,579 psi | 57% | 2795 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 48,254 psi | 76% | 2881 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,847 psi | 73% | 2874 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 86% | 41,452 psi | 65% | 2812 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 44,744 psi | 70% | 2805 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,671 psi | 68% | 2785 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 52,678 psi | 83% | 2927 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,872 psi | 66% | 2766 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,458 psi | 78% | 2936 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,878 psi | 77% | 2772 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,815 psi | 67% | 2726 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 41,075 psi | 64% | 2805 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 48,327 psi | 76% | 2877 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,008 psi | 75% | 2861 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 37,376 psi | 59% | 2740 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 39,407 psi | 62% | 2736 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 46,180 psi | 72% | 2802 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,293 psi | 66% | 2785 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 38,856 psi | 61% | 2713 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 53,287 psi | 84% | 2907 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,655 psi | 65% | 2785 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 32,779 psi | 51% | 2625 fps | 97.4% |
| Vihtavuori N560 | <<locked>> | 92% | 48,660 psi | 76% | 3015 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 98% | 48,283 psi | 76% | 2992 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,205 psi | 65% | 2749 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,236 psi | 68% | 2844 fps | 97.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,034 psi | 41% | 2516 fps | 96.4% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,336 psi | 65% | 2772 fps | 95.2% |
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 84 powders for 7 mm Weath. Mag. loaded with the .284 | 140gr | Barnes Solid. Alliant Reloder-26 delivers the highest muzzle velocity at 3,209 fps; across all powders the maximum-charge window runs from 1,916 fps to 3,209 fps. ADI AR 2225 gives the best case fill at 100 %, and 84 of the 84 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 140.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, 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. Alliant Reloder-26, Accurate High Country, Norma MRP rank at the top here: for 7 mm Weath. Mag. with the .284 | 140gr | 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.