Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 140gr | Sierra Pro-Hunter bullet and 72 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 Ramshot Grand.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 54,505 psi | 89% | 3068 fps | 99.9% |
| Accurate 4350 | <<locked>> | 86% | 52,257 psi | 86% | 3051 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 52,968 psi | 87% | 3156 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 82% | 54,012 psi | 89% | 3018 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 53,214 psi | 87% | 3104 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 96% | 54,404 psi | 89% | 3159 fps | 97.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,542 psi | 75% | 2976 fps | 96% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,437 psi | 66% | 2927 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 88% | 53,113 psi | 87% | 3114 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,230 psi | 89% | 3130 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 52,692 psi | 87% | 3091 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,099 psi | 89% | 3156 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 96% | 51,474 psi | 85% | 3077 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,879 psi | 84% | 3130 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 51,445 psi | 84% | 3163 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 53,287 psi | 87% | 3140 fps | 98.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,833 psi | 77% | 3051 fps | 97% |
| Bofors RP5 | <<locked>> | 96% | 54,099 psi | 89% | 3156 fps | 98.9% |
| Bofors RP7 | <<locked>> | 84% | 51,895 psi | 85% | 2999 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,111 psi | 82% | 3071 fps | 97.9% |
| Hodgdon H414 | <<locked>> | 86% | 54,215 psi | 89% | 3107 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 84% | 53,432 psi | 88% | 3061 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 94% | 54,534 psi | 90% | 3097 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 53,519 psi | 88% | 3081 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 53,476 psi | 88% | 3031 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,821 psi | 82% | 3186 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 86% | 54,447 psi | 89% | 3143 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,869 psi | 61% | 1949 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 53,113 psi | 87% | 3035 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,316 psi | 88% | 3025 fps | 99.5% |
| IMR 4831 | <<locked>> | 88% | 52,881 psi | 87% | 3045 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 52,533 psi | 86% | 3025 fps | 97% |
| IMR 7828 SSC | <<locked>> | 96% | 52,272 psi | 86% | 3133 fps | 97.6% |
| Lovex S065 | <<locked>> | 86% | 53,708 psi | 88% | 3022 fps | 99.9% |
| Lovex S070 | <<locked>> | 86% | 51,866 psi | 85% | 3012 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,808 psi | 85% | 3022 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 53,940 psi | 89% | 3091 fps | 98.6% |
| Norma MRP | <<locked>> | 94% | 53,911 psi | 89% | 3179 fps | 99.7% |
| Norma URP | <<locked>> | 88% | 54,491 psi | 89% | 3094 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 52,576 psi | 86% | 3150 fps | 98% |
| Ramshot Hunter | <<locked>> | 88% | 53,287 psi | 87% | 3094 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,853 psi | 90% | 3150 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,478 psi | 62% | 1991 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 53,519 psi | 88% | 3117 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 52,141 psi | 86% | 3074 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,172 psi | 89% | 3159 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,328 psi | 83% | 3182 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 82% | 52,794 psi | 87% | 3005 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,636 psi | 90% | 3071 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 92% | 52,069 psi | 85% | 3074 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 84% | 51,895 psi | 85% | 2999 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,708 psi | 88% | 3022 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 51,866 psi | 85% | 3012 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,157 psi | 89% | 3064 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,156 psi | 87% | 2881 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,243 psi | 87% | 2972 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 51,634 psi | 85% | 3071 fps | 98.5% |
| Somchem S355 | <<locked>> | 82% | 52,750 psi | 87% | 3002 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 52,692 psi | 87% | 3002 fps | 96.9% |
| Somchem S365 | <<locked>> | 90% | 54,491 psi | 89% | 3097 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 52,794 psi | 87% | 3051 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 84% | 53,896 psi | 88% | 2972 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 52,750 psi | 87% | 3028 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 52,228 psi | 86% | 3025 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 86% | 52,083 psi | 86% | 3031 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,809 psi | 88% | 3107 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 53,867 psi | 88% | 3173 fps | 97.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,432 psi | 88% | 3143 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 52,156 psi | 86% | 2986 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,215 psi | 89% | 3107 fps | 99.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 51,895 psi | 85% | 3212 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 52,591 psi | 86% | 3041 fps | 98.5% |
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>> | 80% | 31,531 psi | 52% | 2589 fps | 95.3% |
| Accurate 4350 | <<locked>> | 80% | 42,496 psi | 70% | 2871 fps | 99.6% |
| Accurate MAGPRO | 71.9 gr | 92% | 49,240 psi | 81% | 3084 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 50,807 psi | 83% | 2966 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,712 psi | 67% | 2851 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 90% | 44,527 psi | 73% | 2966 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 98% | 42,685 psi | 70% | 2910 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 35,592 psi | 58% | 2795 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,901 psi | 67% | 2881 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,021 psi | 77% | 3012 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,712 psi | 67% | 2848 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,609 psi | 63% | 2841 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,240 psi | 50% | 2621 fps | 98.4% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,182 psi | 50% | 2635 fps | 95.1% |
| Alliant Reloder-26 | 63.2 gr | 80% | 32,764 psi | 54% | 2753 fps | 97.3% |
| Bofors RP15 | <<locked>> | 90% | 40,785 psi | 67% | 2890 fps | 95.8% |
| Bofors RP30 | <<locked>> | 96% | 40,930 psi | 67% | 2923 fps | 95.2% |
| Bofors RP5 | <<locked>> | 86% | 38,609 psi | 63% | 2841 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 45,716 psi | 75% | 2881 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 94% | 40,930 psi | 67% | 2874 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 44,193 psi | 73% | 2920 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 80% | 46,847 psi | 77% | 2936 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 90% | 47,543 psi | 78% | 2969 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,688 psi | 77% | 2953 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,479 psi | 63% | 2762 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 38,247 psi | 63% | 2910 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 43,497 psi | 71% | 2940 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,514 psi | 45% | 1742 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,292 psi | 68% | 2805 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,094 psi | 77% | 2907 fps | 98.6% |
| IMR 4831 | <<locked>> | 80% | 40,567 psi | 67% | 2815 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 46,137 psi | 76% | 2907 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 92% | 45,513 psi | 75% | 2999 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 44,628 psi | 73% | 2854 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 43,004 psi | 71% | 2841 fps | 98.1% |
| Lovex S071 | <<locked>> | 84% | 30,951 psi | 51% | 2572 fps | 95% |
| Norma 204 | <<locked>> | 80% | 41,002 psi | 67% | 2835 fps | 95.6% |
| Norma MRP | <<locked>> | 82% | 35,215 psi | 58% | 2785 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 41,945 psi | 69% | 2861 fps | 99.5% |
| Ramshot Grand | 68.5 gr | 90% | 42,467 psi | 70% | 2943 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 40,683 psi | 67% | 2848 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 90% | 37,768 psi | 62% | 2808 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,108 psi | 46% | 1785 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,864 psi | 82% | 3061 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,351 psi | 70% | 2890 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,669 psi | 67% | 2900 fps | 99.1% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 35,172 psi | 58% | 2818 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 49,603 psi | 81% | 2953 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,976 psi | 74% | 2890 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 84% | 39,900 psi | 66% | 2828 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 45,716 psi | 75% | 2881 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,628 psi | 73% | 2854 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 80% | 43,004 psi | 71% | 2841 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,749 psi | 83% | 3009 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,980 psi | 82% | 2835 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,685 psi | 72% | 2799 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 39,552 psi | 65% | 2825 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 49,429 psi | 81% | 2946 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 46,006 psi | 76% | 2877 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 38,667 psi | 63% | 2815 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,375 psi | 58% | 2690 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 47,427 psi | 78% | 2867 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,323 psi | 71% | 2858 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 37,376 psi | 61% | 2730 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 42,786 psi | 70% | 2861 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 33,953 psi | 56% | 2707 fps | 98.4% |
| Vihtavuori N560 | <<locked>> | 90% | 46,818 psi | 77% | 3038 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 94% | 43,526 psi | 71% | 2949 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,395 psi | 70% | 2818 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,411 psi | 73% | 2923 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,818 psi | 44% | 2612 fps | 98% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,827 psi | 65% | 2792 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 78 powders for 7 mm Blaser Mag. loaded with the .284 | 140gr | Sierra Pro-Hunter. Winchester StaBALL HD delivers the highest muzzle velocity at 3,212 fps; across all powders the maximum-charge window runs from 1,949 fps to 3,212 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:12.5 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, Accurate MAGPRO, Ramshot Grand rank at the top here: for 7 mm Blaser Mag. with the .284 | 140gr | Sierra Pro-Hunter they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, IMR 8133 Enduron, 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.