Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 150gr | Swift Scirocco bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Alliant Reloder-26 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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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 54,317 psi | 89% | 2966 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 52,257 psi | 86% | 2949 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 52,866 psi | 87% | 3054 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 53,969 psi | 89% | 2913 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 53,185 psi | 87% | 3002 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 96% | 54,288 psi | 89% | 3058 fps | 98.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,585 psi | 75% | 2884 fps | 96.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,350 psi | 66% | 2841 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 53,084 psi | 87% | 3009 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,201 psi | 89% | 3025 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 52,634 psi | 86% | 2989 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,983 psi | 89% | 3054 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,940 psi | 90% | 3028 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,691 psi | 83% | 3028 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 51,227 psi | 84% | 3058 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 53,185 psi | 87% | 3038 fps | 99% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,717 psi | 77% | 2956 fps | 97.4% |
| Bofors RP5 | <<locked>> | 96% | 53,983 psi | 89% | 3054 fps | 99.2% |
| Bofors RP7 | <<locked>> | 84% | 51,851 psi | 85% | 2894 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,096 psi | 82% | 2976 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 86% | 54,172 psi | 89% | 3005 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 84% | 53,606 psi | 88% | 2963 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 94% | 54,563 psi | 90% | 2999 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 94% | 53,272 psi | 87% | 2979 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 53,563 psi | 88% | 2930 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,792 psi | 82% | 3091 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 86% | 54,462 psi | 89% | 3041 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,927 psi | 61% | 1867 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 53,229 psi | 87% | 2933 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,345 psi | 88% | 2920 fps | 99.6% |
| IMR 4831 | <<locked>> | 88% | 52,736 psi | 87% | 2943 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 52,489 psi | 86% | 2930 fps | 97.4% |
| IMR 7828 SSC | <<locked>> | 96% | 52,098 psi | 86% | 3031 fps | 98% |
| Lovex S065 | <<locked>> | 86% | 53,824 psi | 88% | 2920 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 52,011 psi | 85% | 2913 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,750 psi | 85% | 2927 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 53,824 psi | 88% | 2986 fps | 98.9% |
| Norma 217ᴾ | <<locked>> | 100% | 35,766 psi | 59% | 2753 fps | 96.1% |
| Norma MRP | <<locked>> | 94% | 53,867 psi | 88% | 3081 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 54,592 psi | 90% | 2989 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 52,388 psi | 86% | 3048 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 88% | 53,229 psi | 87% | 2989 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,665 psi | 90% | 3048 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,579 psi | 62% | 1909 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 53,534 psi | 88% | 3012 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 52,257 psi | 86% | 2972 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,085 psi | 89% | 3054 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,082 psi | 82% | 3084 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 82% | 52,895 psi | 87% | 2900 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,549 psi | 90% | 2969 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 92% | 51,996 psi | 85% | 2976 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 84% | 51,851 psi | 85% | 2894 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,824 psi | 88% | 2920 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 52,011 psi | 85% | 2913 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,331 psi | 89% | 2963 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,229 psi | 87% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,272 psi | 87% | 2874 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 51,576 psi | 85% | 2969 fps | 98.8% |
| Somchem S355 | <<locked>> | 82% | 52,823 psi | 87% | 2897 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 52,547 psi | 86% | 2900 fps | 97.2% |
| Somchem S365 | <<locked>> | 90% | 54,534 psi | 90% | 2992 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 52,634 psi | 86% | 2949 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 84% | 53,954 psi | 89% | 2867 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 52,765 psi | 87% | 2927 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 52,040 psi | 85% | 2927 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 86% | 51,982 psi | 85% | 2930 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,795 psi | 88% | 3005 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 53,853 psi | 88% | 3071 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,272 psi | 87% | 3041 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 52,214 psi | 86% | 2884 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,418 psi | 89% | 3009 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 98% | 51,547 psi | 85% | 3107 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 52,431 psi | 86% | 2943 fps | 98.8% |
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% | 31,560 psi | 52% | 2510 fps | 95.9% |
| Accurate 4350 | <<locked>> | 80% | 42,540 psi | 70% | 2776 fps | 99.8% |
| Accurate MAGPRO | 66.9 gr | 90% | 45,818 psi | 75% | 2923 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 50,908 psi | 84% | 2864 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,116 psi | 63% | 2700 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 88% | 41,611 psi | 68% | 2808 fps | 95% |
| ADI AR 2217 | <<locked>> | 98% | 42,612 psi | 70% | 2822 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 94% | 33,359 psi | 55% | 2651 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,959 psi | 67% | 2785 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,094 psi | 77% | 2910 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,043 psi | 62% | 2697 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,667 psi | 63% | 2753 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,342 psi | 50% | 2543 fps | 98.8% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,226 psi | 50% | 2556 fps | 95.9% |
| Alliant Reloder-26 | 60.1 gr | 80% | 32,779 psi | 54% | 2671 fps | 97.9% |
| Bofors RP15 | <<locked>> | 88% | 38,363 psi | 63% | 2743 fps | 95.5% |
| Bofors RP30 | <<locked>> | 96% | 40,756 psi | 67% | 2831 fps | 95.7% |
| Bofors RP5 | <<locked>> | 86% | 38,667 psi | 63% | 2753 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 45,818 psi | 75% | 2785 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 94% | 40,930 psi | 67% | 2789 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 44,367 psi | 73% | 2828 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 80% | 46,949 psi | 77% | 2841 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 88% | 44,469 psi | 73% | 2815 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 43,642 psi | 72% | 2799 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,551 psi | 63% | 2667 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 35,882 psi | 59% | 2759 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 43,482 psi | 71% | 2844 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,485 psi | 45% | 1667 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,278 psi | 68% | 2710 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,253 psi | 78% | 2815 fps | 99% |
| IMR 4831 | <<locked>> | 80% | 40,741 psi | 67% | 2723 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 43,410 psi | 71% | 2756 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 90% | 42,612 psi | 70% | 2844 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 44,715 psi | 73% | 2759 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 42,989 psi | 71% | 2746 fps | 98.5% |
| Lovex S071 | <<locked>> | 84% | 30,951 psi | 51% | 2493 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 41,147 psi | 68% | 2746 fps | 96.2% |
| Norma 217 | <<locked>> | 98% | 33,605 psi | 55% | 2694 fps | 95% |
| Norma MRP | <<locked>> | 80% | 32,953 psi | 54% | 2638 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 41,930 psi | 69% | 2766 fps | 99.7% |
| Ramshot Grand | 65.1 gr | 90% | 42,322 psi | 69% | 2848 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 40,872 psi | 67% | 2759 fps | 98.6% |
| Ramshot Magnum | <<locked>> | 88% | 35,085 psi | 58% | 2657 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,137 psi | 46% | 1709 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,966 psi | 82% | 2956 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,424 psi | 70% | 2795 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,828 psi | 67% | 2812 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 35,085 psi | 58% | 2736 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 80% | 49,559 psi | 81% | 2851 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 42,264 psi | 69% | 2740 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 82% | 37,333 psi | 61% | 2680 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 45,818 psi | 75% | 2785 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,715 psi | 73% | 2759 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 42,989 psi | 71% | 2746 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,966 psi | 84% | 2907 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,082 psi | 82% | 2733 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,874 psi | 72% | 2707 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 36,999 psi | 61% | 2674 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 49,501 psi | 81% | 2844 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,977 psi | 75% | 2785 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 38,653 psi | 63% | 2723 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,433 psi | 58% | 2605 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 47,369 psi | 78% | 2766 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,323 psi | 71% | 2762 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 34,983 psi | 57% | 2585 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 42,728 psi | 70% | 2762 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 33,910 psi | 56% | 2618 fps | 98.8% |
| Vihtavuori N560 | <<locked>> | 88% | 43,758 psi | 72% | 2881 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 94% | 43,381 psi | 71% | 2858 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,409 psi | 70% | 2726 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,367 psi | 73% | 2828 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,963 psi | 44% | 2543 fps | 98.7% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,188 psi | 61% | 2644 fps | 95.1% |
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 | 150gr | Swift Scirocco. Winchester StaBALL HD delivers the highest muzzle velocity at 3,107 fps; across all powders the maximum-charge window runs from 1,867 fps to 3,107 fps. ADI AR 2217 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 59–90 %, leaving at least 10 % headroom. The 150.0 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. Accurate MAGPRO, Alliant Reloder-26, Ramshot Grand rank at the top here: for 7 mm Blaser Mag. with the .284 | 150gr | Swift Scirocco they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, Vihtavuori N170, Vihtavuori N570 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.