Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 142gr | Lehigh Defense Controlled Chaos bullet and 76 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 Vihtavuori N560.
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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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 51,880 psi | 85% | 2999 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 53,621 psi | 88% | 3048 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 54,114 psi | 89% | 3150 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 82% | 52,301 psi | 86% | 2963 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,563 psi | 90% | 3097 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 96% | 52,301 psi | 86% | 3091 fps | 97.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,566 psi | 63% | 2854 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,359 psi | 88% | 2989 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,476 psi | 89% | 3107 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 51,866 psi | 85% | 3068 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 53,940 psi | 89% | 3081 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 96% | 51,793 psi | 85% | 3091 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 52,402 psi | 86% | 3071 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,660 psi | 80% | 3064 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 52,533 psi | 86% | 3156 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,259 psi | 89% | 3130 fps | 98.8% |
| Bofors RP3 | <<locked>> | 82% | 54,085 psi | 89% | 3002 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 44,382 psi | 73% | 2976 fps | 96.2% |
| Bofors RP5 | <<locked>> | 96% | 51,793 psi | 85% | 3091 fps | 98.5% |
| Bofors RP7 | <<locked>> | 86% | 53,432 psi | 88% | 2992 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,935 psi | 79% | 2999 fps | 97.2% |
| Hodgdon H380 | <<locked>> | 82% | 54,447 psi | 89% | 3022 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 52,069 psi | 85% | 3041 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 55,100 psi | 90% | 3058 fps | 99% |
| Hodgdon H4831 | <<locked>> | 94% | 52,373 psi | 86% | 3028 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,911 psi | 90% | 3074 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,708 psi | 90% | 3022 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,485 psi | 78% | 3107 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 86% | 52,069 psi | 85% | 3074 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,608 psi | 60% | 1913 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,056 psi | 90% | 2995 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 54,694 psi | 90% | 3031 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,984 psi | 90% | 3018 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 54,056 psi | 89% | 3038 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,882 psi | 88% | 3018 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 98% | 53,330 psi | 88% | 3120 fps | 97.6% |
| Lovex S065 | <<locked>> | 86% | 52,040 psi | 85% | 2963 fps | 99.8% |
| Lovex S070 | <<locked>> | 88% | 53,476 psi | 88% | 3012 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,400 psi | 81% | 2956 fps | 99.6% |
| Norma 204 | <<locked>> | 88% | 51,779 psi | 85% | 3022 fps | 98.1% |
| Norma MRP | <<locked>> | 94% | 51,300 psi | 84% | 3114 fps | 99.4% |
| Norma URP | <<locked>> | 88% | 52,475 psi | 86% | 3031 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,838 psi | 88% | 3143 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 54,723 psi | 90% | 3087 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,953 psi | 85% | 3071 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,434 psi | 61% | 1959 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,114 psi | 89% | 3002 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,071 psi | 90% | 3117 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 53,621 psi | 88% | 3068 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 52,011 psi | 85% | 3097 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,892 psi | 79% | 3107 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 84% | 54,404 psi | 89% | 3002 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 52,533 psi | 86% | 3005 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 94% | 53,243 psi | 87% | 3068 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 86% | 53,432 psi | 88% | 2992 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 86% | 52,040 psi | 85% | 2963 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 88% | 53,476 psi | 88% | 3012 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 52,359 psi | 86% | 3009 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,839 psi | 90% | 2874 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,897 psi | 90% | 2969 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 52,794 psi | 87% | 3061 fps | 98.6% |
| Somchem S355 | <<locked>> | 84% | 54,143 psi | 89% | 2995 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,099 psi | 89% | 2995 fps | 97% |
| Somchem S365 | <<locked>> | 90% | 52,098 psi | 86% | 3035 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,114 psi | 89% | 3045 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 84% | 52,112 psi | 86% | 2917 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,201 psi | 89% | 3022 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 53,258 psi | 87% | 3015 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 88% | 53,548 psi | 88% | 3028 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,897 psi | 90% | 3097 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 51,401 psi | 84% | 3100 fps | 96.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,937 psi | 84% | 3074 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 53,722 psi | 88% | 2982 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 52,301 psi | 86% | 3048 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,330 psi | 86% | 3202 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,012 psi | 89% | 3038 fps | 98.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 82% | 32,227 psi | 53% | 2589 fps | 95.5% |
| Accurate 4350 | <<locked>> | 80% | 40,756 psi | 67% | 2812 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 94% | 50,372 psi | 83% | 3081 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 49,284 psi | 81% | 2910 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,204 psi | 64% | 2789 fps | 95% |
| ADI AR 2213 | <<locked>> | 92% | 45,585 psi | 75% | 2956 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 98% | 36,187 psi | 59% | 2789 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,053 psi | 82% | 2933 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,378 psi | 65% | 2822 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,049 psi | 74% | 2949 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,986 psi | 64% | 2782 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,494 psi | 65% | 2838 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,037 psi | 48% | 2566 fps | 97.9% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,908 psi | 51% | 2635 fps | 95.4% |
| Alliant Reloder-26 | 60.3 gr | 80% | 31,198 psi | 51% | 2684 fps | 96.5% |
| Bofors RP15 | <<locked>> | 90% | 38,972 psi | 64% | 2825 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 50,662 psi | 83% | 2949 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 41,466 psi | 68% | 2913 fps | 95.2% |
| Bofors RP5 | <<locked>> | 88% | 39,494 psi | 65% | 2838 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 44,309 psi | 73% | 2822 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 96% | 41,901 psi | 69% | 2867 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 50,821 psi | 83% | 2963 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,627 psi | 70% | 2861 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 80% | 45,310 psi | 74% | 2877 fps | 97.2% |
| Hodgdon H4831 | <<locked>> | 92% | 48,994 psi | 80% | 2969 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 92% | 47,819 psi | 79% | 2946 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,941 psi | 61% | 2703 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,073 psi | 64% | 2907 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 41,582 psi | 68% | 2871 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,412 psi | 45% | 1713 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,866 psi | 85% | 2946 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,827 psi | 65% | 2743 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,542 psi | 75% | 2848 fps | 98.3% |
| IMR 4831 | <<locked>> | 80% | 39,117 psi | 64% | 2759 fps | 99.1% |
| IMR 4955 Enduron | <<locked>> | 90% | 47,500 psi | 78% | 2904 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 92% | 43,642 psi | 72% | 2930 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 43,236 psi | 71% | 2799 fps | 98.9% |
| Lovex S070 | <<locked>> | 80% | 41,452 psi | 68% | 2779 fps | 97.7% |
| Lovex S071 | <<locked>> | 86% | 31,430 psi | 52% | 2566 fps | 95.2% |
| Norma 204 | <<locked>> | 82% | 42,264 psi | 69% | 2835 fps | 95.9% |
| Norma MRP | 61.5 gr | 84% | 36,129 psi | 59% | 2785 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 40,277 psi | 66% | 2799 fps | 99.2% |
| Ramshot Grand | <<locked>> | 92% | 43,511 psi | 71% | 2940 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 39,059 psi | 64% | 2789 fps | 97.7% |
| Ramshot Magnum | <<locked>> | 92% | 38,711 psi | 64% | 2808 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,021 psi | 46% | 1755 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,792 psi | 83% | 2946 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,819 psi | 79% | 3002 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,582 psi | 67% | 2828 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,146 psi | 64% | 2841 fps | 98.8% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 35,897 psi | 59% | 2815 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 47,732 psi | 78% | 2894 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 43,424 psi | 71% | 2831 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 84% | 38,247 psi | 63% | 2766 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 44,309 psi | 73% | 2822 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,236 psi | 71% | 2799 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 80% | 41,452 psi | 68% | 2779 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,863 psi | 80% | 2946 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,573 psi | 80% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,221 psi | 69% | 2740 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 40,538 psi | 67% | 2822 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 47,834 psi | 79% | 2890 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,543 psi | 78% | 2877 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 36,883 psi | 61% | 2756 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,289 psi | 60% | 2687 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 45,745 psi | 75% | 2812 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,669 psi | 68% | 2799 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 88% | 38,261 psi | 63% | 2726 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 41,060 psi | 67% | 2799 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 32,300 psi | 53% | 2644 fps | 97.9% |
| Vihtavuori N560 | 65.9 gr | 90% | 44,846 psi | 74% | 2969 fps | 95% |
| Vihtavuori N565 | <<locked>> | 96% | 44,338 psi | 73% | 2946 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,770 psi | 67% | 2762 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,627 psi | 70% | 2861 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,657 psi | 42% | 2543 fps | 97.1% |
| Winchester Supreme 780 | <<locked>> | 88% | 40,727 psi | 67% | 2789 fps | 95.6% |
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 81 powders for 7 mm Blaser Mag. loaded with the .284 | 142gr | Lehigh Defense Controlled Chaos. Winchester StaBALL HD delivers the highest muzzle velocity at 3,202 fps; across all powders the maximum-charge window runs from 1,913 fps to 3,202 fps. ADI AR 2217 gives the best case fill at 100 %, and 81 of the 81 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 56–90 %, 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-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, Norma MRP, Vihtavuori N560 rank at the top here: for 7 mm Blaser 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.