Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 140gr | Rhino Solid Shank bullet and 77 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% | 55,042 psi | 86% | 3028 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 56,695 psi | 89% | 3074 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 56,579 psi | 89% | 3182 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 96% | 57,464 psi | 90% | 3179 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 54,636 psi | 86% | 2989 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 57,522 psi | 90% | 3127 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 96% | 55,129 psi | 86% | 3123 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,973 psi | 64% | 2887 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,608 psi | 87% | 3009 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,276 psi | 90% | 3133 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,955 psi | 86% | 3094 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,014 psi | 89% | 3114 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,897 psi | 86% | 3120 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,782 psi | 87% | 3097 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,590 psi | 81% | 3091 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 56,420 psi | 88% | 3189 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 57,522 psi | 90% | 3159 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 56,753 psi | 89% | 3028 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,558 psi | 75% | 3012 fps | 96.6% |
| Bofors RP5 | <<locked>> | 96% | 54,897 psi | 86% | 3120 fps | 98.7% |
| Bofors RP7 | <<locked>> | 86% | 55,695 psi | 87% | 3018 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,734 psi | 80% | 3031 fps | 97.6% |
| Hodgdon H380 | <<locked>> | 82% | 56,971 psi | 89% | 3048 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 54,810 psi | 86% | 3071 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 86% | 57,595 psi | 90% | 3087 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 94% | 55,317 psi | 87% | 3064 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,056 psi | 85% | 3041 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 57,653 psi | 90% | 3048 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,531 psi | 79% | 3146 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 86% | 55,245 psi | 87% | 3107 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,767 psi | 58% | 1929 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,522 psi | 90% | 3022 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 57,203 psi | 90% | 3054 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,188 psi | 90% | 3045 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 56,884 psi | 89% | 3064 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,463 psi | 88% | 3051 fps | 97.4% |
| IMR 7828 SSC | <<locked>> | 98% | 56,478 psi | 89% | 3159 fps | 98% |
| Lovex S065 | <<locked>> | 86% | 54,317 psi | 85% | 2989 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 55,927 psi | 88% | 3035 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,591 psi | 82% | 2989 fps | 99.7% |
| Norma 204 | <<locked>> | 88% | 54,462 psi | 85% | 3051 fps | 98.3% |
| Norma MRP | <<locked>> | 94% | 54,679 psi | 86% | 3143 fps | 99.5% |
| Norma URP | <<locked>> | 88% | 55,114 psi | 86% | 3058 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 57,566 psi | 90% | 3186 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 88% | 53,882 psi | 84% | 3054 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,593 psi | 87% | 3110 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,565 psi | 59% | 1975 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,594 psi | 89% | 3031 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,201 psi | 85% | 3081 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,594 psi | 89% | 3097 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,027 psi | 86% | 3127 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,169 psi | 80% | 3146 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 84% | 56,869 psi | 89% | 3025 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,187 psi | 86% | 3035 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 94% | 56,304 psi | 88% | 3100 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 86% | 55,695 psi | 87% | 3018 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,317 psi | 85% | 2989 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 88% | 55,927 psi | 88% | 3035 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,781 psi | 86% | 3031 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,985 psi | 89% | 2897 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,145 psi | 90% | 2992 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,840 psi | 88% | 3094 fps | 98.8% |
| Somchem S355 | <<locked>> | 84% | 56,753 psi | 89% | 3022 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,826 psi | 89% | 3025 fps | 97.3% |
| Somchem S365 | <<locked>> | 90% | 55,143 psi | 86% | 3058 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,913 psi | 89% | 3074 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 84% | 54,288 psi | 85% | 2940 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,014 psi | 89% | 3051 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 56,347 psi | 88% | 3048 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 88% | 56,130 psi | 88% | 3051 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,665 psi | 86% | 3074 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,650 psi | 86% | 3133 fps | 97.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,157 psi | 85% | 3104 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,710 psi | 89% | 3009 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,810 psi | 86% | 3071 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 56,985 psi | 89% | 3235 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,145 psi | 90% | 3071 fps | 98.9% |
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% | 34,185 psi | 54% | 2612 fps | 95.8% |
| Accurate 4350 | <<locked>> | 80% | 43,149 psi | 68% | 2838 fps | 99.4% |
| Accurate High Country | <<locked>> | 88% | 45,730 psi | 72% | 2976 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 92% | 49,966 psi | 78% | 3048 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 51,242 psi | 80% | 2933 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 41,220 psi | 65% | 2815 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 92% | 48,138 psi | 75% | 2989 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 96% | 35,969 psi | 56% | 2756 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,359 psi | 82% | 2956 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,307 psi | 65% | 2844 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,674 psi | 75% | 2972 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 41,060 psi | 64% | 2805 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 88% | 41,858 psi | 66% | 2864 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,748 psi | 48% | 2585 fps | 98% |
| Alliant Reloder-25 | <<locked>> | 86% | 32,692 psi | 51% | 2657 fps | 95.8% |
| Alliant Reloder-26 | 63.9 gr | 80% | 33,257 psi | 52% | 2710 fps | 96.8% |
| Bofors RP15 | <<locked>> | 90% | 41,510 psi | 65% | 2854 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 53,142 psi | 83% | 2972 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 44,382 psi | 70% | 2946 fps | 95.7% |
| Bofors RP5 | <<locked>> | 88% | 41,858 psi | 66% | 2864 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 46,296 psi | 73% | 2848 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 96% | 44,222 psi | 69% | 2900 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 53,127 psi | 83% | 2986 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,773 psi | 70% | 2884 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 47,471 psi | 74% | 2904 fps | 97.4% |
| Hodgdon H4831 | <<locked>> | 90% | 48,066 psi | 75% | 2930 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 47,210 psi | 74% | 2917 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,928 psi | 61% | 2726 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 92% | 38,711 psi | 61% | 2867 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 44,077 psi | 69% | 2900 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,514 psi | 43% | 1726 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,940 psi | 85% | 2966 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,640 psi | 65% | 2766 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,456 psi | 74% | 2871 fps | 98.4% |
| IMR 4831 | <<locked>> | 80% | 41,162 psi | 65% | 2779 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 88% | 46,630 psi | 73% | 2871 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 92% | 46,238 psi | 72% | 2963 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 45,194 psi | 71% | 2822 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 43,395 psi | 68% | 2805 fps | 97.8% |
| Lovex S071 | <<locked>> | 86% | 33,388 psi | 52% | 2592 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 41,539 psi | 65% | 2799 fps | 95.2% |
| Norma MRP | 65.1 gr | 84% | 38,232 psi | 60% | 2812 fps | 96% |
| Norma URP | <<locked>> | 80% | 42,380 psi | 66% | 2825 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 46,050 psi | 72% | 2972 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 41,263 psi | 65% | 2812 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 90% | 38,363 psi | 60% | 2776 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,108 psi | 44% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,881 psi | 83% | 2969 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,575 psi | 79% | 3025 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,960 psi | 67% | 2854 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,220 psi | 65% | 2861 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 38,319 psi | 60% | 2851 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 80% | 50,038 psi | 78% | 2917 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 45,498 psi | 71% | 2854 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 84% | 40,466 psi | 63% | 2792 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 46,296 psi | 73% | 2848 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,194 psi | 71% | 2822 fps | 99% |
| Shooters World SW4350 | <<locked>> | 80% | 43,395 psi | 68% | 2805 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,372 psi | 81% | 2972 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,401 psi | 79% | 2802 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,222 psi | 69% | 2766 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 40,118 psi | 63% | 2789 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 50,082 psi | 78% | 2913 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 49,893 psi | 78% | 2907 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 39,102 psi | 61% | 2779 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 38,348 psi | 60% | 2713 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 47,848 psi | 75% | 2835 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,918 psi | 69% | 2825 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 88% | 40,524 psi | 64% | 2756 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 43,134 psi | 68% | 2822 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 34,374 psi | 54% | 2667 fps | 98.1% |
| Vihtavuori N560 | 69.8 gr | 90% | 47,572 psi | 75% | 2999 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 47,297 psi | 74% | 2976 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,917 psi | 67% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,976 psi | 70% | 2887 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,238 psi | 43% | 2572 fps | 97.5% |
| Winchester Supreme 780 | <<locked>> | 86% | 40,335 psi | 63% | 2756 fps | 95.1% |
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 83 powders for 7 mm Weath. Mag. loaded with the .284 | 140gr | Rhino Solid Shank. Winchester StaBALL HD delivers the highest muzzle velocity at 3,235 fps; across all powders the maximum-charge window runs from 1,929 fps to 3,235 fps. ADI AR 2217 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:12.0 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for 7 mm Weath. Mag. with the .284 | 140gr | Rhino Solid Shank they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, ReloadSwiss RS 80, Vihtavuori N568 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.