Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 140gr | Peregrine Plainsmaster (VLR-4) bullet and 90 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 ReloadSwiss RS 70.
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 2495 | <<locked>> | 82% | 57,725 psi | 90% | 2940 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 55,463 psi | 87% | 2972 fps | 99% |
| Accurate 3100 | <<locked>> | 98% | 54,505 psi | 85% | 3022 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 54,752 psi | 86% | 2949 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 56,362 psi | 88% | 3071 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 55,970 psi | 88% | 3173 fps | 97.8% |
| Accurate MAGPRO | <<locked>> | 98% | 57,174 psi | 90% | 3173 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 84% | 55,114 psi | 86% | 2992 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 57,609 psi | 90% | 3127 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 98% | 55,332 psi | 87% | 3120 fps | 97.4% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,896 psi | 84% | 3058 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,869 psi | 88% | 3012 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,086 psi | 88% | 3035 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 57,348 psi | 90% | 3133 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,766 psi | 86% | 3094 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,971 psi | 89% | 3110 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,636 psi | 86% | 3114 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,347 psi | 87% | 3094 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,645 psi | 75% | 3018 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 55,753 psi | 87% | 3182 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,287 psi | 84% | 3087 fps | 98.2% |
| Bofors RP3 | <<locked>> | 84% | 56,927 psi | 89% | 3031 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 54,636 psi | 86% | 3114 fps | 98.5% |
| Bofors RP7 | <<locked>> | 88% | 56,086 psi | 88% | 3018 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,210 psi | 74% | 2956 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 84% | 57,130 psi | 90% | 3051 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,824 psi | 86% | 3068 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 54,331 psi | 85% | 3028 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 96% | 55,434 psi | 87% | 3061 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,114 psi | 85% | 3038 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,012 psi | 85% | 2999 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,673 psi | 73% | 3061 fps | 97.7% |
| Hodgdon Superformance | <<locked>> | 88% | 55,332 psi | 87% | 3107 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,448 psi | 57% | 1909 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,447 psi | 85% | 2972 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,971 psi | 89% | 3012 fps | 99.5% |
| IMR 4350 | <<locked>> | 92% | 57,609 psi | 90% | 3058 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,288 psi | 85% | 2992 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 56,826 psi | 89% | 3064 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,595 psi | 90% | 3064 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,652 psi | 89% | 3045 fps | 97.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,405 psi | 88% | 3150 fps | 97.7% |
| Lovex S062 | <<locked>> | 82% | 54,592 psi | 86% | 2963 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,447 psi | 85% | 2989 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 55,927 psi | 88% | 3035 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,211 psi | 76% | 2913 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 55,390 psi | 87% | 3018 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,795 psi | 86% | 3051 fps | 98.2% |
| Norma MRP | <<locked>> | 96% | 54,099 psi | 85% | 3133 fps | 99.4% |
| Norma URP | <<locked>> | 90% | 55,027 psi | 86% | 3054 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 56,405 psi | 88% | 3048 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 57,261 psi | 90% | 3176 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 53,969 psi | 85% | 3054 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,256 psi | 80% | 3038 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,202 psi | 58% | 1955 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,956 psi | 89% | 3035 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,201 psi | 85% | 3084 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 56,594 psi | 89% | 3097 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,998 psi | 86% | 3127 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,847 psi | 73% | 3054 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 82% | 56,391 psi | 88% | 2976 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 57,043 psi | 89% | 3028 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,361 psi | 87% | 3031 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 96% | 56,072 psi | 88% | 3094 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 56,086 psi | 88% | 3018 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,447 psi | 85% | 2989 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 54,592 psi | 86% | 2963 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,927 psi | 88% | 3035 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,201 psi | 87% | 3035 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,624 psi | 90% | 2904 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,580 psi | 90% | 2992 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,608 psi | 87% | 3087 fps | 98.6% |
| Somchem S355 | <<locked>> | 86% | 56,768 psi | 89% | 3022 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 57,130 psi | 90% | 3022 fps | 97% |
| Somchem S365 | <<locked>> | 92% | 54,868 psi | 86% | 3058 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 56,710 psi | 89% | 3068 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 82% | 56,956 psi | 89% | 2930 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 57,101 psi | 89% | 2946 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 54,665 psi | 86% | 2943 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 57,130 psi | 90% | 3048 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 56,173 psi | 88% | 3041 fps | 99% |
| Vihtavuori N540 | <<locked>> | 82% | 55,506 psi | 87% | 2943 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 56,231 psi | 88% | 3054 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 57,508 psi | 90% | 3117 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,230 psi | 85% | 3123 fps | 96.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,922 psi | 78% | 3025 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,014 psi | 89% | 3012 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,085 psi | 86% | 3074 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,416 psi | 81% | 3163 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 57,130 psi | 90% | 3068 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 2495 | <<locked>> | 80% | 54,027 psi | 85% | 2890 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,866 psi | 81% | 2913 fps | 98.5% |
| Accurate 3100 | <<locked>> | 84% | 33,330 psi | 52% | 2595 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 51,314 psi | 80% | 2897 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,682 psi | 62% | 2766 fps | 98.7% |
| Accurate High Country | <<locked>> | 90% | 45,252 psi | 71% | 2969 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 94% | 49,545 psi | 78% | 3038 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 48,544 psi | 76% | 2881 fps | 100% |
| ADI AR 2209 | <<locked>> | 88% | 43,918 psi | 69% | 2871 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 94% | 48,138 psi | 75% | 2986 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 41,249 psi | 65% | 2808 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,153 psi | 77% | 2904 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,620 psi | 82% | 2979 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,566 psi | 60% | 2779 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,005 psi | 69% | 2907 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,814 psi | 64% | 2802 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 90% | 41,365 psi | 65% | 2854 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,065 psi | 44% | 2507 fps | 96.6% |
| Alliant Reloder-25 | <<locked>> | 88% | 32,039 psi | 50% | 2641 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 30,168 psi | 47% | 2621 fps | 95% |
| Bofors RP15 | <<locked>> | 94% | 43,627 psi | 68% | 2900 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 49,676 psi | 78% | 2917 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 41,365 psi | 65% | 2854 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 43,366 psi | 68% | 2782 fps | 96.9% |
| Hodgdon H1000 | <<locked>> | 98% | 44,121 psi | 69% | 2894 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 49,951 psi | 78% | 2930 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 41,626 psi | 65% | 2818 fps | 97% |
| Hodgdon H4350 | <<locked>> | 80% | 44,628 psi | 70% | 2844 fps | 96.5% |
| Hodgdon H4831 | <<locked>> | 92% | 48,225 psi | 76% | 2930 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 94% | 50,604 psi | 79% | 2976 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,027 psi | 56% | 2661 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 96% | 40,770 psi | 64% | 2920 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 40,857 psi | 64% | 2831 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,195 psi | 43% | 1706 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,068 psi | 80% | 2917 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,258 psi | 83% | 2949 fps | 99.2% |
| IMR 4350 | <<locked>> | 80% | 38,957 psi | 61% | 2703 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,991 psi | 71% | 2818 fps | 97.7% |
| IMR 4831 | <<locked>> | 80% | 38,043 psi | 60% | 2713 fps | 98.5% |
| IMR 4895 | <<locked>> | 80% | 54,041 psi | 85% | 3009 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 49,951 psi | 78% | 2927 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 94% | 45,847 psi | 72% | 2953 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 51,198 psi | 80% | 2910 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,235 psi | 66% | 2762 fps | 98.3% |
| Lovex S070 | <<locked>> | 80% | 40,437 psi | 63% | 2740 fps | 96.9% |
| Lovex S071 | <<locked>> | 90% | 34,679 psi | 54% | 2631 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 51,967 psi | 81% | 2966 fps | 100% |
| Norma 204 | <<locked>> | 82% | 41,495 psi | 65% | 2795 fps | 95% |
| Norma MRP | 64 gr | 86% | 37,739 psi | 59% | 2802 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 39,291 psi | 62% | 2759 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 80% | 52,692 psi | 83% | 2989 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 45,905 psi | 72% | 2966 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 38,247 psi | 60% | 2746 fps | 96.9% |
| Ramshot Magnum | <<locked>> | 94% | 40,843 psi | 64% | 2831 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,760 psi | 44% | 1749 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,038 psi | 78% | 2917 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,818 psi | 73% | 2966 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,595 psi | 62% | 2785 fps | 98.5% |
| ReloadSwiss RS 70 | 60.8 gr | 80% | 38,305 psi | 60% | 2795 fps | 98% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 37,608 psi | 59% | 2828 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 52,895 psi | 83% | 2923 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,572 psi | 73% | 2858 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 45,571 psi | 71% | 2854 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 88% | 42,844 psi | 67% | 2848 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 43,366 psi | 68% | 2782 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,235 psi | 66% | 2762 fps | 98.3% |
| Shooters World Precision | <<locked>> | 80% | 51,198 psi | 80% | 2910 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,437 psi | 63% | 2740 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,109 psi | 75% | 2917 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,848 psi | 75% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,423 psi | 65% | 2703 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 42,453 psi | 67% | 2841 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 46,833 psi | 73% | 2858 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,980 psi | 78% | 2904 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 35,824 psi | 56% | 2710 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 37,942 psi | 59% | 2707 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 53,606 psi | 84% | 2884 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,577 psi | 84% | 2897 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,759 psi | 70% | 2782 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,915 psi | 64% | 2762 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 90% | 40,103 psi | 63% | 2746 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 51,924 psi | 81% | 2890 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,234 psi | 63% | 2759 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 80% | 31,154 psi | 49% | 2585 fps | 96.7% |
| Vihtavuori N560 | 68.5 gr | 92% | 47,268 psi | 74% | 2992 fps | 95% |
| Vihtavuori N565 | <<locked>> | 98% | 46,456 psi | 73% | 2963 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,972 psi | 63% | 2726 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 41,829 psi | 66% | 2822 fps | 97% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,700 psi | 39% | 2467 fps | 95.1% |
| Winchester Supreme 780 | <<locked>> | 90% | 43,004 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 90 powders for 7 mm Weath. Mag. loaded with the .284 | 140gr | Peregrine Plainsmaster (VLR-4). Alliant Reloder-26 delivers the highest muzzle velocity at 3,182 fps; across all powders the maximum-charge window runs from 1,909 fps to 3,182 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 90 of the 90 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 1:9.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, 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, ReloadSwiss RS 70 rank at the top here: for 7 mm Weath. Mag. with the .284 | 140gr | Peregrine Plainsmaster (VLR-4) 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.