Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 142gr | Lehigh Defense Controlled Chaos bullet and 83 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 MAGPRO and Accurate High Country.
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 2700 | <<locked>> | 82% | 57,261 psi | 90% | 2976 fps | 99.3% |
| Accurate 3100 | <<locked>> | 98% | 57,000 psi | 89% | 3035 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 57,232 psi | 90% | 2959 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,998 psi | 86% | 3025 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,563 psi | 86% | 3123 fps | 97.7% |
| Accurate MAGPRO | <<locked>> | 96% | 55,448 psi | 87% | 3123 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 56,565 psi | 89% | 2989 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,782 psi | 87% | 3074 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 98% | 57,261 psi | 90% | 3130 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,508 psi | 62% | 2828 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,317 psi | 85% | 2963 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,608 psi | 87% | 3081 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,913 psi | 89% | 3100 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,085 psi | 86% | 3058 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,826 psi | 89% | 3127 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,595 psi | 90% | 3100 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,864 psi | 78% | 3041 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,085 psi | 85% | 3133 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,695 psi | 87% | 3107 fps | 98.7% |
| Bofors RP3 | <<locked>> | 82% | 55,230 psi | 87% | 2979 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,643 psi | 72% | 2953 fps | 96% |
| Bofors RP5 | <<locked>> | 98% | 56,826 psi | 89% | 3127 fps | 98.9% |
| Bofors RP7 | <<locked>> | 86% | 54,447 psi | 85% | 2969 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,052 psi | 77% | 2976 fps | 97.1% |
| Hodgdon H380 | <<locked>> | 82% | 55,317 psi | 87% | 2999 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,840 psi | 89% | 3077 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 56,101 psi | 88% | 3031 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 96% | 57,334 psi | 90% | 3071 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,043 psi | 88% | 3048 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,086 psi | 88% | 3005 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,689 psi | 76% | 3084 fps | 98.4% |
| Hodgdon Superformance | <<locked>> | 88% | 57,406 psi | 90% | 3117 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,738 psi | 58% | 1900 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,985 psi | 88% | 2972 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,637 psi | 87% | 3005 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,956 psi | 88% | 2995 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 55,405 psi | 87% | 3018 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,926 psi | 86% | 2995 fps | 97% |
| IMR 7828 SSC | <<locked>> | 98% | 54,708 psi | 86% | 3104 fps | 97.6% |
| Lovex S062 | <<locked>> | 82% | 56,521 psi | 89% | 2966 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,376 psi | 88% | 2995 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 54,447 psi | 85% | 2986 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,865 psi | 80% | 2936 fps | 99.5% |
| Norma 203B | <<locked>> | 82% | 57,319 psi | 90% | 3025 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,710 psi | 89% | 3064 fps | 98.6% |
| Norma MRP | <<locked>> | 96% | 56,652 psi | 89% | 3153 fps | 99.7% |
| Norma URP | <<locked>> | 90% | 57,116 psi | 90% | 3064 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,230 psi | 87% | 3120 fps | 98% |
| Ramshot Hunter | <<locked>> | 90% | 55,941 psi | 88% | 3064 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,447 psi | 84% | 3054 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,550 psi | 59% | 1946 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,129 psi | 86% | 2982 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,289 psi | 88% | 3091 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,926 psi | 86% | 3048 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,043 psi | 89% | 3133 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,197 psi | 77% | 3084 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 84% | 55,347 psi | 87% | 2976 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,217 psi | 90% | 3041 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 94% | 54,476 psi | 85% | 3045 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 86% | 54,447 psi | 85% | 2969 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,376 psi | 88% | 2995 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 56,521 psi | 89% | 2966 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,447 psi | 85% | 2986 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,145 psi | 90% | 3041 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,724 psi | 87% | 2854 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,854 psi | 88% | 2946 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,027 psi | 85% | 3038 fps | 98.5% |
| Somchem S355 | <<locked>> | 84% | 55,259 psi | 87% | 2972 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,259 psi | 87% | 2972 fps | 96.9% |
| Somchem S365 | <<locked>> | 92% | 57,174 psi | 90% | 3064 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,230 psi | 87% | 3022 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 86% | 56,637 psi | 89% | 2946 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,492 psi | 87% | 3002 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,607 psi | 86% | 2995 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 82% | 57,072 psi | 89% | 2943 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,505 psi | 85% | 3002 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,217 psi | 88% | 3074 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,594 psi | 89% | 3143 fps | 97.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,272 psi | 82% | 3048 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,853 psi | 86% | 2959 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,058 psi | 89% | 3081 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,375 psi | 85% | 3182 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,071 psi | 86% | 3012 fps | 98.5% |
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% | 53,621 psi | 84% | 2920 fps | 98.8% |
| Accurate 3100 | <<locked>> | 82% | 33,156 psi | 52% | 2566 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 53,708 psi | 84% | 2907 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,640 psi | 65% | 2785 fps | 99.2% |
| Accurate High Country | 65.7 gr | 88% | 44,150 psi | 69% | 2923 fps | 95.1% |
| Accurate MAGPRO | 71.5 gr | 94% | 51,663 psi | 81% | 3058 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 50,183 psi | 79% | 2887 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 42,757 psi | 67% | 2828 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 92% | 46,615 psi | 73% | 2933 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 98% | 37,101 psi | 58% | 2762 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,981 psi | 80% | 2910 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,045 psi | 63% | 2792 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,963 psi | 72% | 2920 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 42,569 psi | 67% | 2818 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,364 psi | 63% | 2812 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,733 psi | 47% | 2539 fps | 97.7% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,633 psi | 50% | 2608 fps | 95.2% |
| Alliant Reloder-26 | 61.5 gr | 80% | 32,024 psi | 50% | 2661 fps | 96.3% |
| Bofors RP15 | <<locked>> | 92% | 42,743 psi | 67% | 2861 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 51,837 psi | 81% | 2927 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,670 psi | 67% | 2890 fps | 95.1% |
| Bofors RP5 | <<locked>> | 88% | 40,364 psi | 63% | 2812 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 45,107 psi | 71% | 2799 fps | 97.5% |
| Hodgdon H1000 | <<locked>> | 96% | 42,989 psi | 67% | 2848 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 51,909 psi | 81% | 2943 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 43,453 psi | 68% | 2831 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 80% | 46,311 psi | 73% | 2854 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 92% | 50,067 psi | 78% | 2946 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,907 psi | 77% | 2923 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,811 psi | 59% | 2680 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,972 psi | 63% | 2877 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 42,699 psi | 67% | 2851 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,514 psi | 43% | 1699 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,794 psi | 83% | 2923 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,567 psi | 64% | 2720 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,325 psi | 73% | 2825 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 39,958 psi | 63% | 2736 fps | 99% |
| IMR 4955 Enduron | <<locked>> | 90% | 48,327 psi | 76% | 2877 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 94% | 47,703 psi | 75% | 2969 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 53,113 psi | 83% | 2917 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,005 psi | 69% | 2776 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 42,264 psi | 66% | 2756 fps | 97.5% |
| Lovex S071 | <<locked>> | 86% | 32,358 psi | 51% | 2546 fps | 95% |
| Norma 203B | <<locked>> | 80% | 53,635 psi | 84% | 2969 fps | 100% |
| Norma 204 | <<locked>> | 82% | 43,221 psi | 68% | 2812 fps | 95.7% |
| Norma MRP | <<locked>> | 84% | 36,970 psi | 58% | 2759 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 41,133 psi | 64% | 2776 fps | 99.1% |
| Ramshot Grand | <<locked>> | 92% | 44,556 psi | 70% | 2917 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 39,987 psi | 63% | 2762 fps | 97.5% |
| Ramshot Magnum | <<locked>> | 92% | 39,798 psi | 62% | 2785 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,123 psi | 44% | 1742 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,590 psi | 81% | 2923 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,791 psi | 76% | 2972 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,626 psi | 65% | 2805 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,059 psi | 63% | 2815 fps | 98.6% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,869 psi | 58% | 2792 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 48,675 psi | 76% | 2871 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,353 psi | 70% | 2808 fps | 95% |
| Rottweil R 905 | <<locked>> | 86% | 41,887 psi | 66% | 2802 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 45,107 psi | 71% | 2799 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,005 psi | 69% | 2776 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 53,113 psi | 83% | 2917 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,264 psi | 66% | 2756 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,951 psi | 78% | 2927 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,255 psi | 77% | 2759 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,134 psi | 68% | 2720 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 41,510 psi | 65% | 2799 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 48,762 psi | 76% | 2867 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,486 psi | 76% | 2854 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 37,782 psi | 59% | 2730 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,173 psi | 58% | 2664 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 46,601 psi | 73% | 2789 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,496 psi | 67% | 2772 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 39,276 psi | 62% | 2707 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 53,693 psi | 84% | 2894 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,032 psi | 66% | 2776 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 33,141 psi | 52% | 2618 fps | 97.7% |
| Vihtavuori N560 | <<locked>> | 92% | 49,226 psi | 77% | 3012 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 96% | 45,382 psi | 71% | 2917 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,626 psi | 65% | 2740 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,642 psi | 68% | 2838 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,324 psi | 41% | 2516 fps | 96.9% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,814 psi | 66% | 2766 fps | 95.5% |
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 88 powders for 7 mm Weath. Mag. loaded with the .284 | 142gr | Lehigh Defense Controlled Chaos. Winchester StaBALL HD delivers the highest muzzle velocity at 3,182 fps; across all powders the maximum-charge window runs from 1,900 fps to 3,182 fps. ADI AR 2217 gives the best case fill at 100 %, and 88 of the 88 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 142.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-23 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 MAGPRO, Accurate High Country rank at the top here: for 7 mm Weath. Mag. with the .284 | 142gr | Lehigh Defense Controlled Chaos they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, Norma 217, ReloadSwiss RS 80 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.