Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 140gr | Frontier BTSP bullet and 79 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>> | 98% | 54,708 psi | 90% | 3061 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 52,765 psi | 87% | 3054 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 52,982 psi | 87% | 3146 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 84% | 55,056 psi | 90% | 3025 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 53,853 psi | 88% | 3104 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 54,940 psi | 90% | 3153 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,014 psi | 62% | 2851 fps | 96.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,911 psi | 89% | 3097 fps | 98.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,911 psi | 89% | 3097 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 52,663 psi | 86% | 2999 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 53,635 psi | 88% | 3117 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,897 psi | 90% | 3136 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 53,200 psi | 87% | 3087 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,317 psi | 89% | 3153 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 98% | 51,532 psi | 85% | 3077 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,674 psi | 78% | 3064 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 94% | 51,329 psi | 84% | 3159 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,229 psi | 87% | 3133 fps | 98.5% |
| Bofors RP3 | <<locked>> | 82% | 53,345 psi | 88% | 3009 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 54,317 psi | 89% | 3153 fps | 98.8% |
| Bofors RP7 | <<locked>> | 86% | 52,794 psi | 87% | 2999 fps | 99% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,311 psi | 78% | 2999 fps | 96.8% |
| Hodgdon H380 | <<locked>> | 82% | 53,751 psi | 88% | 3031 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,781 psi | 90% | 3107 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 54,418 psi | 89% | 3064 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 94% | 51,634 psi | 85% | 3035 fps | 96.3% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,940 psi | 89% | 3074 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 53,940 psi | 89% | 3031 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,818 psi | 77% | 3110 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 88% | 55,114 psi | 90% | 3146 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,709 psi | 60% | 1926 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,375 psi | 89% | 3002 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 54,027 psi | 89% | 3038 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,346 psi | 89% | 3028 fps | 99.4% |
| IMR 4831 | <<locked>> | 90% | 53,287 psi | 87% | 3045 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,272 psi | 87% | 3025 fps | 96.8% |
| IMR 7828 SSC | <<locked>> | 98% | 52,591 psi | 86% | 3127 fps | 97.3% |
| Lovex S062 | <<locked>> | 82% | 54,897 psi | 90% | 3002 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,694 psi | 90% | 3028 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 52,533 psi | 86% | 3012 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,617 psi | 80% | 2963 fps | 99.4% |
| Norma 204 | <<locked>> | 90% | 54,824 psi | 90% | 3091 fps | 98.5% |
| Norma MRP | <<locked>> | 96% | 53,983 psi | 89% | 3179 fps | 99.5% |
| Norma URP | <<locked>> | 90% | 54,984 psi | 90% | 3091 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,040 psi | 87% | 3143 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 90% | 53,998 psi | 89% | 3097 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,169 psi | 84% | 3077 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,318 psi | 61% | 1969 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 53,447 psi | 88% | 3012 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,186 psi | 89% | 3123 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 52,852 psi | 87% | 3077 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,766 psi | 90% | 3163 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,934 psi | 77% | 3104 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 84% | 53,664 psi | 88% | 3012 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 51,880 psi | 85% | 3012 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 94% | 52,518 psi | 86% | 3074 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 86% | 52,794 psi | 87% | 2999 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,694 psi | 90% | 3028 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 54,897 psi | 90% | 3002 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 52,533 psi | 86% | 3012 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,013 psi | 90% | 3071 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,186 psi | 89% | 2887 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,012 psi | 89% | 2972 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 52,069 psi | 85% | 3068 fps | 98.4% |
| Somchem S355 | <<locked>> | 84% | 53,447 psi | 88% | 3005 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 53,417 psi | 88% | 2999 fps | 96.6% |
| Somchem S365 | <<locked>> | 92% | 54,882 psi | 90% | 3097 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 53,098 psi | 87% | 3048 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 86% | 54,853 psi | 90% | 2979 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 53,447 psi | 88% | 3028 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 52,533 psi | 86% | 3022 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 88% | 52,808 psi | 87% | 3038 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,056 psi | 89% | 3104 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,143 psi | 89% | 3166 fps | 97.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,879 psi | 82% | 3074 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 52,968 psi | 87% | 2992 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,056 psi | 90% | 3110 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,213 psi | 84% | 3209 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 52,997 psi | 87% | 3038 fps | 98.3% |
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% | 31,662 psi | 52% | 2589 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 40,059 psi | 66% | 2812 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 94% | 49,530 psi | 81% | 3084 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 48,660 psi | 80% | 2920 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 41,278 psi | 68% | 2854 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 92% | 44,962 psi | 74% | 2959 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 98% | 35,679 psi | 59% | 2789 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 41,437 psi | 68% | 2854 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 41,437 psi | 68% | 2854 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,414 psi | 81% | 2943 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,769 psi | 64% | 2825 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,324 psi | 73% | 2956 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,002 psi | 67% | 2848 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 88% | 38,885 psi | 64% | 2841 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,543 psi | 47% | 2566 fps | 97.5% |
| Alliant Reloder-25 | <<locked>> | 88% | 32,460 psi | 53% | 2697 fps | 96% |
| Alliant Reloder-26 | 60.1 gr | 80% | 30,661 psi | 50% | 2687 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 40,973 psi | 67% | 2890 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 49,937 psi | 82% | 2956 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 38,885 psi | 64% | 2841 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 43,714 psi | 72% | 2825 fps | 97.3% |
| Hodgdon H1000 | <<locked>> | 98% | 44,208 psi | 73% | 2936 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 50,140 psi | 82% | 2969 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 41,959 psi | 69% | 2864 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 44,686 psi | 73% | 2884 fps | 96.9% |
| Hodgdon H4831 | <<locked>> | 92% | 48,095 psi | 79% | 2969 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 47,181 psi | 77% | 2953 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,318 psi | 60% | 2707 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 38,479 psi | 63% | 2904 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 40,959 psi | 67% | 2874 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,296 psi | 45% | 1719 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,213 psi | 84% | 2953 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,262 psi | 64% | 2746 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,194 psi | 74% | 2858 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 38,493 psi | 63% | 2766 fps | 98.9% |
| IMR 4955 Enduron | <<locked>> | 90% | 46,920 psi | 77% | 2910 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 94% | 46,006 psi | 76% | 2995 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 51,517 psi | 85% | 2946 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,656 psi | 70% | 2805 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 40,901 psi | 67% | 2785 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 33,098 psi | 54% | 2628 fps | 95.7% |
| Norma 204 | <<locked>> | 82% | 41,655 psi | 68% | 2841 fps | 95.5% |
| Norma MRP | 61.3 gr | 84% | 35,505 psi | 58% | 2789 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 39,639 psi | 65% | 2805 fps | 99% |
| Ramshot Grand | <<locked>> | 94% | 45,934 psi | 75% | 3009 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 38,450 psi | 63% | 2792 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 92% | 38,101 psi | 63% | 2808 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,905 psi | 46% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,154 psi | 82% | 2956 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,065 psi | 77% | 3009 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,914 psi | 66% | 2831 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,566 psi | 63% | 2844 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 35,360 psi | 58% | 2812 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 47,036 psi | 77% | 2900 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 45,527 psi | 75% | 2890 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 86% | 40,263 psi | 66% | 2831 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 43,714 psi | 72% | 2825 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,656 psi | 70% | 2805 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 51,517 psi | 85% | 2946 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,901 psi | 67% | 2785 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,182 psi | 79% | 2956 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,979 psi | 79% | 2792 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,669 psi | 68% | 2743 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 39,900 psi | 66% | 2825 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 47,181 psi | 77% | 2900 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 46,731 psi | 77% | 2881 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 36,201 psi | 59% | 2759 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 38,334 psi | 63% | 2756 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 45,107 psi | 74% | 2822 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,046 psi | 67% | 2802 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 37,652 psi | 62% | 2730 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 40,451 psi | 66% | 2802 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 31,720 psi | 52% | 2644 fps | 97.5% |
| Vihtavuori N560 | 67.1 gr | 92% | 47,210 psi | 78% | 3035 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 98% | 46,615 psi | 77% | 3009 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,205 psi | 66% | 2769 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,959 psi | 69% | 2864 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,237 psi | 41% | 2539 fps | 96.6% |
| Winchester Supreme 780 | <<locked>> | 88% | 40,132 psi | 66% | 2792 fps | 95.2% |
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 79 powders for 7 mm Blaser Mag. loaded with the .284 | 140gr | Frontier BTSP. Winchester StaBALL HD delivers the highest muzzle velocity at 3,209 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,209 fps. ADI AR 2225 gives the best case fill at 100 %, and 79 of the 79 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 60–90 %, 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. ADI AR 2225, 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for 7 mm Blaser Mag. with the .284 | 140gr | Frontier BTSP 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.