Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 153gr | Peregrine Glider GRM bullet and 78 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% | 51,576 psi | 85% | 2897 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 53,388 psi | 88% | 2940 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 53,954 psi | 89% | 3048 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 82% | 52,344 psi | 86% | 2858 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,549 psi | 90% | 2995 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 96% | 52,185 psi | 86% | 2989 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,319 psi | 63% | 2762 fps | 97.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 54,868 psi | 90% | 2995 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 54,868 psi | 90% | 2995 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,171 psi | 87% | 2877 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,621 psi | 90% | 3002 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 51,982 psi | 85% | 2963 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,128 psi | 89% | 2982 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 51,619 psi | 85% | 2986 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 52,431 psi | 86% | 2966 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,544 psi | 80% | 2966 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 52,344 psi | 86% | 3051 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,230 psi | 89% | 3028 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 53,809 psi | 88% | 2894 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 44,193 psi | 73% | 2881 fps | 96.8% |
| Bofors RP5 | <<locked>> | 96% | 51,619 psi | 85% | 2986 fps | 98.9% |
| Bofors RP7 | <<locked>> | 86% | 53,417 psi | 88% | 2890 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,921 psi | 79% | 2907 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 82% | 54,099 psi | 89% | 2913 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 52,112 psi | 86% | 2943 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 84% | 51,605 psi | 85% | 2897 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 94% | 52,431 psi | 86% | 2933 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,824 psi | 90% | 2972 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,868 psi | 90% | 2920 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,442 psi | 78% | 3015 fps | 99% |
| Hodgdon Superformance | <<locked>> | 86% | 52,112 psi | 86% | 2976 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,579 psi | 60% | 1831 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,114 psi | 90% | 2890 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 54,650 psi | 90% | 2930 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,882 psi | 90% | 2917 fps | 99.8% |
| IMR 4831 | <<locked>> | 90% | 53,809 psi | 88% | 2930 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,809 psi | 88% | 2920 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 98% | 53,606 psi | 88% | 3028 fps | 98.3% |
| Lovex S065 | <<locked>> | 86% | 51,880 psi | 85% | 2861 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 53,040 psi | 87% | 2904 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,994 psi | 80% | 2854 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 51,750 psi | 85% | 2923 fps | 98.6% |
| Norma MRP | <<locked>> | 96% | 54,955 psi | 90% | 3071 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 52,170 psi | 86% | 2923 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,012 psi | 89% | 3045 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 54,607 psi | 90% | 2986 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,025 psi | 85% | 2979 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,405 psi | 61% | 1877 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,186 psi | 89% | 2904 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 51,198 psi | 84% | 2946 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 53,330 psi | 88% | 2963 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 51,924 psi | 85% | 2995 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,674 psi | 78% | 3012 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 84% | 54,215 psi | 89% | 2894 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 52,518 psi | 86% | 2907 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 94% | 53,359 psi | 88% | 2969 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 86% | 53,417 psi | 88% | 2890 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 51,880 psi | 85% | 2861 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 88% | 53,040 psi | 87% | 2904 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 52,185 psi | 86% | 2900 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,839 psi | 90% | 2772 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,563 psi | 90% | 2864 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 52,924 psi | 87% | 2966 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 53,896 psi | 88% | 2887 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,128 psi | 89% | 2900 fps | 97.5% |
| Somchem S365 | <<locked>> | 90% | 51,953 psi | 85% | 2927 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 53,650 psi | 88% | 2940 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 84% | 51,967 psi | 85% | 2812 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,244 psi | 89% | 2917 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 53,403 psi | 88% | 2920 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 88% | 53,330 psi | 88% | 2923 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,621 psi | 90% | 2989 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,027 psi | 90% | 3064 fps | 98.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,691 psi | 83% | 2972 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 53,708 psi | 88% | 2877 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 52,112 psi | 86% | 2943 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,489 psi | 86% | 3097 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 53,896 psi | 88% | 2936 fps | 99% |
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% | 29,544 psi | 49% | 2438 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 40,393 psi | 66% | 2710 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 92% | 46,630 psi | 77% | 2917 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 49,211 psi | 81% | 2808 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,073 psi | 64% | 2697 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 90% | 42,540 psi | 70% | 2802 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 96% | 33,649 psi | 55% | 2638 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 39,291 psi | 65% | 2697 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 39,291 psi | 65% | 2697 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,937 psi | 82% | 2828 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,204 psi | 64% | 2723 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,817 psi | 74% | 2844 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,870 psi | 64% | 2690 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 86% | 36,695 psi | 60% | 2684 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,631 psi | 47% | 2474 fps | 98.3% |
| Alliant Reloder-25 | <<locked>> | 84% | 28,616 psi | 47% | 2484 fps | 95% |
| Alliant Reloder-26 | 58.2 gr | 80% | 30,748 psi | 50% | 2592 fps | 97.2% |
| Bofors RP15 | <<locked>> | 90% | 38,856 psi | 64% | 2733 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 50,473 psi | 83% | 2841 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 38,537 psi | 63% | 2759 fps | 95% |
| Bofors RP5 | <<locked>> | 86% | 36,695 psi | 60% | 2684 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 44,063 psi | 72% | 2723 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 94% | 38,986 psi | 64% | 2717 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 50,792 psi | 83% | 2861 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,409 psi | 70% | 2762 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 80% | 45,339 psi | 74% | 2782 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 90% | 45,542 psi | 75% | 2812 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 90% | 44,628 psi | 73% | 2792 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,651 psi | 60% | 2605 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,245 psi | 60% | 2746 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 41,524 psi | 68% | 2779 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,427 psi | 45% | 1640 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,764 psi | 85% | 2838 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,697 psi | 65% | 2651 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,469 psi | 75% | 2753 fps | 98.7% |
| IMR 4831 | <<locked>> | 80% | 38,624 psi | 63% | 2657 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,527 psi | 73% | 2753 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 92% | 43,584 psi | 72% | 2838 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 42,917 psi | 70% | 2700 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 41,176 psi | 68% | 2684 fps | 98.1% |
| Lovex S071 | <<locked>> | 86% | 30,966 psi | 51% | 2477 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 39,189 psi | 64% | 2677 fps | 95.6% |
| Norma MRP | 57.9 gr | 82% | 33,228 psi | 55% | 2625 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 40,059 psi | 66% | 2703 fps | 99.5% |
| Ramshot Grand | <<locked>> | 90% | 40,335 psi | 66% | 2779 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 38,827 psi | 64% | 2690 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 90% | 35,650 psi | 59% | 2651 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,847 psi | 46% | 1677 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,705 psi | 83% | 2848 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,645 psi | 78% | 2894 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,350 psi | 66% | 2733 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,885 psi | 64% | 2743 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 33,156 psi | 54% | 2657 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 47,442 psi | 78% | 2789 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 43,221 psi | 71% | 2733 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 84% | 38,058 psi | 62% | 2674 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 44,063 psi | 72% | 2723 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,917 psi | 70% | 2700 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 80% | 41,176 psi | 68% | 2684 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,762 psi | 80% | 2844 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,327 psi | 79% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,003 psi | 69% | 2644 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,710 psi | 62% | 2667 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 47,572 psi | 78% | 2785 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 44,092 psi | 72% | 2723 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 36,666 psi | 60% | 2657 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 33,663 psi | 55% | 2539 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 45,513 psi | 75% | 2710 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,539 psi | 68% | 2700 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 35,476 psi | 58% | 2579 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 40,944 psi | 67% | 2703 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 31,836 psi | 52% | 2546 fps | 98.3% |
| Vihtavuori N560 | 63.6 gr | 90% | 44,672 psi | 73% | 2874 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 96% | 44,005 psi | 72% | 2848 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,567 psi | 67% | 2664 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,409 psi | 70% | 2762 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,135 psi | 41% | 2454 fps | 97.8% |
| Winchester Supreme 780 | <<locked>> | 86% | 37,884 psi | 62% | 2638 fps | 95.4% |
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 | 153gr | Peregrine Glider GRM. Winchester StaBALL HD delivers the highest muzzle velocity at 3,097 fps; across all powders the maximum-charge window runs from 1,831 fps to 3,097 fps. ADI AR 2225 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 60–90 %, leaving at least 10 % headroom. The 153.0 gr projectile in 0.284" calls for a 1:8.0 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 | 153gr | Peregrine Glider GRM 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.