Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 125gr | Lehigh Defense Controlled Chaos bullet and 90 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Alliant Reloder-16.
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.
A valid access license is required to use the Personalized Load Calculator.
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% | 56,434 psi | 88% | 3081 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,508 psi | 90% | 3146 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,115 psi | 88% | 3189 fps | 99.4% |
| Accurate 4064 | <<locked>> | 84% | 56,811 psi | 89% | 3140 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,172 psi | 85% | 3189 fps | 99.9% |
| Accurate High Country | <<locked>> | 98% | 57,551 psi | 90% | 3343 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 86% | 56,782 psi | 89% | 3173 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,172 psi | 86% | 3228 fps | 97.5% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,681 psi | 89% | 3284 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,347 psi | 88% | 3301 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 55,390 psi | 87% | 3225 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,740 psi | 90% | 3196 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,302 psi | 85% | 3159 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,868 psi | 86% | 3248 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,362 psi | 88% | 3278 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,636 psi | 86% | 3215 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,782 psi | 87% | 3278 fps | 97.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,881 psi | 83% | 3209 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,905 psi | 72% | 3120 fps | 98.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 57,232 psi | 90% | 3360 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,271 psi | 80% | 3196 fps | 96.8% |
| Bofors RP3 | <<locked>> | 84% | 55,013 psi | 86% | 3156 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,782 psi | 87% | 3278 fps | 97.8% |
| Bofors RP7 | <<locked>> | 88% | 54,433 psi | 85% | 3136 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 84% | 55,405 psi | 87% | 3173 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 56,550 psi | 89% | 3248 fps | 99% |
| Hodgdon H4350 | <<locked>> | 88% | 56,028 psi | 88% | 3202 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 98% | 56,855 psi | 89% | 3222 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,317 psi | 87% | 3169 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,753 psi | 89% | 3212 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 57,058 psi | 89% | 3281 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,332 psi | 57% | 2021 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,130 psi | 90% | 3176 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,028 psi | 88% | 3153 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,230 psi | 87% | 3130 fps | 98.7% |
| IMR 4350 | <<locked>> | 92% | 55,434 psi | 87% | 3169 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,999 psi | 88% | 3166 fps | 98.8% |
| IMR 4831 | <<locked>> | 92% | 54,824 psi | 86% | 3182 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 55,724 psi | 87% | 3192 fps | 100% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,230 psi | 85% | 3251 fps | 96.1% |
| Lovex S060 | <<locked>> | 82% | 57,609 psi | 90% | 3140 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,463 psi | 88% | 3146 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,217 psi | 88% | 3163 fps | 99.6% |
| Lovex S070 | <<locked>> | 90% | 54,114 psi | 85% | 3146 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,644 psi | 73% | 3025 fps | 98.1% |
| Norma 201 | <<locked>> | 82% | 57,725 psi | 90% | 3159 fps | 100% |
| Norma 203B | <<locked>> | 84% | 57,043 psi | 89% | 3202 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,492 psi | 89% | 3225 fps | 97.6% |
| Norma MRP | <<locked>> | 98% | 55,550 psi | 87% | 3307 fps | 98.9% |
| Norma URP | <<locked>> | 92% | 56,623 psi | 89% | 3235 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,433 psi | 85% | 3169 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,708 psi | 86% | 3271 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 92% | 55,463 psi | 87% | 3228 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,936 psi | 77% | 3127 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,043 psi | 58% | 2067 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,201 psi | 87% | 3153 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,840 psi | 88% | 3271 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,244 psi | 85% | 3209 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,550 psi | 89% | 3304 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,034 psi | 71% | 3140 fps | 97% |
| Rottweil R 902 | <<locked>> | 82% | 54,766 psi | 86% | 3104 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,100 psi | 86% | 3153 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,869 psi | 89% | 3199 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 98% | 57,551 psi | 90% | 3261 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 88% | 54,433 psi | 85% | 3136 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,217 psi | 88% | 3163 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 56,463 psi | 88% | 3146 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,114 psi | 85% | 3146 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,898 psi | 89% | 3215 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,421 psi | 90% | 3186 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,912 psi | 88% | 3035 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,941 psi | 88% | 3110 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,058 psi | 89% | 3258 fps | 98% |
| Somchem S355 | <<locked>> | 86% | 54,926 psi | 86% | 3146 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 56,173 psi | 88% | 3235 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,665 psi | 86% | 3176 fps | 98.3% |
| Vihtavuori N135 | <<locked>> | 82% | 55,172 psi | 86% | 3064 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,390 psi | 87% | 3077 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,478 psi | 89% | 3120 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,926 psi | 86% | 3166 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,867 psi | 84% | 3143 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 84% | 57,348 psi | 90% | 3123 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,331 psi | 85% | 3169 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 98% | 55,288 psi | 87% | 3238 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,767 psi | 87% | 3294 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,636 psi | 86% | 3127 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,550 psi | 89% | 3248 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,109 psi | 75% | 3268 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,740 psi | 90% | 3196 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,737 psi | 86% | 3166 fps | 97.4% |
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% | 52,736 psi | 83% | 3025 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,488 psi | 79% | 3025 fps | 97.3% |
| Accurate 3100 | <<locked>> | 88% | 37,202 psi | 58% | 2815 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 49,980 psi | 78% | 3028 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,305 psi | 60% | 2871 fps | 97.5% |
| Accurate High Country | <<locked>> | 94% | 49,792 psi | 78% | 3202 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 47,050 psi | 74% | 2995 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 90% | 45,353 psi | 71% | 3035 fps | 95% |
| ADI AR 2213 | <<locked>> | 98% | 53,127 psi | 83% | 3219 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,344 psi | 82% | 3232 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 45,426 psi | 71% | 3031 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,732 psi | 75% | 3028 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,865 psi | 80% | 3100 fps | 99.9% |
| Alliant Reloder-16 | 57 gr | 80% | 37,202 psi | 58% | 2881 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,380 psi | 66% | 3022 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,904 psi | 70% | 3025 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 94% | 45,542 psi | 71% | 3077 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 82% | 29,211 psi | 46% | 2661 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 92% | 35,317 psi | 55% | 2851 fps | 95.2% |
| Alliant Reloder-26 | 66.1 gr | 84% | 33,910 psi | 53% | 2854 fps | 95.5% |
| Bofors RP15 | <<locked>> | 96% | 44,875 psi | 70% | 3064 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 48,254 psi | 76% | 3038 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 45,542 psi | 71% | 3077 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 42,148 psi | 66% | 2890 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 48,457 psi | 76% | 3048 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 40,176 psi | 63% | 2913 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 82% | 45,992 psi | 72% | 3009 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 96% | 53,026 psi | 83% | 3156 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,722 psi | 54% | 2762 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,881 psi | 83% | 3150 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 42,322 psi | 66% | 2995 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,166 psi | 43% | 1811 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,476 psi | 84% | 3117 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,501 psi | 78% | 3038 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,779 psi | 81% | 3068 fps | 98.2% |
| IMR 4350 | <<locked>> | 84% | 43,047 psi | 67% | 2927 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,569 psi | 68% | 2923 fps | 96.3% |
| IMR 4831 | <<locked>> | 80% | 36,724 psi | 58% | 2815 fps | 97.1% |
| IMR 4895 | <<locked>> | 80% | 52,156 psi | 82% | 3133 fps | 100% |
| IMR 7828 SSC | <<locked>> | 98% | 50,589 psi | 79% | 3182 fps | 95.1% |
| Lovex S060 | <<locked>> | 80% | 53,998 psi | 85% | 3081 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,705 psi | 78% | 3035 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,060 psi | 64% | 2867 fps | 97% |
| Lovex S070 | <<locked>> | 80% | 39,450 psi | 62% | 2848 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 38,290 psi | 60% | 2841 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 54,012 psi | 85% | 3100 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,241 psi | 79% | 3084 fps | 100% |
| Norma 204 | <<locked>> | 86% | 46,050 psi | 72% | 3028 fps | 95.1% |
| Norma MRP | 68.7 gr | 90% | 41,843 psi | 66% | 3028 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 38,043 psi | 60% | 2864 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 80% | 50,691 psi | 79% | 3107 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 50,879 psi | 80% | 3196 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 36,869 psi | 58% | 2841 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 96% | 42,177 psi | 66% | 2982 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,702 psi | 43% | 1854 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,457 psi | 76% | 3028 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,049 psi | 71% | 3084 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,087 psi | 60% | 2881 fps | 97.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,927 psi | 58% | 2884 fps | 96.3% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 41,887 psi | 66% | 3058 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 51,517 psi | 81% | 3048 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,324 psi | 71% | 2979 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 49,951 psi | 78% | 3074 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 92% | 47,181 psi | 74% | 3071 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 42,148 psi | 66% | 2890 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,060 psi | 64% | 2867 fps | 97% |
| Shooters World Precision | <<locked>> | 80% | 49,705 psi | 78% | 3035 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,450 psi | 62% | 2848 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,456 psi | 73% | 3031 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,853 psi | 84% | 3127 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,296 psi | 73% | 2884 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,263 psi | 63% | 2805 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 46,760 psi | 73% | 3068 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 45,426 psi | 71% | 2976 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 34,505 psi | 54% | 2812 fps | 99.2% |
| Somchem S385 | <<locked>> | 88% | 41,959 psi | 66% | 2927 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 51,779 psi | 81% | 3012 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,112 psi | 82% | 3025 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,540 psi | 68% | 2900 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,421 psi | 62% | 2864 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 94% | 44,251 psi | 69% | 2963 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 50,430 psi | 79% | 3018 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,986 psi | 61% | 2864 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 80% | 30,240 psi | 47% | 2684 fps | 95% |
| Vihtavuori N560 | <<locked>> | 96% | 52,098 psi | 82% | 3225 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,711 psi | 61% | 2831 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 40,379 psi | 63% | 2920 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 27,572 psi | 43% | 2687 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 54,085 psi | 85% | 3136 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 47,500 psi | 74% | 3035 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 | 125gr | Lehigh Defense Controlled Chaos. Alliant Reloder-26 delivers the highest muzzle velocity at 3,360 fps; across all powders the maximum-charge window runs from 2,021 fps to 3,360 fps. Accurate 3100 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 125.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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, Norma MRP, Alliant Reloder-16 rank at the top here: for 7 mm Weath. Mag. with the .284 | 125gr | Lehigh Defense Controlled Chaos 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.