Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 145gr | Peregrine Glider GRM bullet and 82 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 Norma MRP.
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 2700 | <<locked>> | 82% | 54,897 psi | 90% | 2949 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 53,461 psi | 88% | 2999 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 54,027 psi | 89% | 2923 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 51,822 psi | 85% | 2992 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 52,156 psi | 86% | 3087 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 54,331 psi | 89% | 2966 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 52,910 psi | 87% | 3041 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 54,172 psi | 89% | 3097 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,130 psi | 61% | 2792 fps | 96.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,214 psi | 87% | 3038 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 51,764 psi | 85% | 2933 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 52,837 psi | 87% | 3051 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,070 psi | 89% | 3074 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 52,518 psi | 86% | 3031 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 53,403 psi | 88% | 3091 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,230 psi | 89% | 3071 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,833 psi | 77% | 3002 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,520 psi | 90% | 3163 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,330 psi | 86% | 3071 fps | 98.5% |
| Bofors RP3 | <<locked>> | 82% | 52,518 psi | 86% | 2949 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 53,403 psi | 88% | 3091 fps | 98.8% |
| Bofors RP7 | <<locked>> | 86% | 51,996 psi | 85% | 2940 fps | 99% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,543 psi | 76% | 2943 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 82% | 52,866 psi | 87% | 2969 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 53,940 psi | 89% | 3048 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 53,563 psi | 88% | 3002 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 54,418 psi | 89% | 3035 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,345 psi | 88% | 3018 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 53,040 psi | 87% | 2969 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,948 psi | 75% | 3048 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 88% | 54,244 psi | 89% | 3084 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,463 psi | 60% | 1883 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 53,809 psi | 88% | 2946 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 53,243 psi | 87% | 2976 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,737 psi | 88% | 2969 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 52,315 psi | 86% | 2982 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,373 psi | 86% | 2966 fps | 96.9% |
| IMR 7828 SSC | <<locked>> | 98% | 51,779 psi | 85% | 3068 fps | 97.4% |
| Lovex S062 | <<locked>> | 82% | 53,911 psi | 89% | 2936 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,664 psi | 88% | 2963 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 51,735 psi | 85% | 2953 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,572 psi | 78% | 2900 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 54,578 psi | 90% | 2995 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,853 psi | 88% | 3031 fps | 98.5% |
| Norma MRP | <<locked>> | 96% | 53,113 psi | 87% | 3117 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 54,302 psi | 89% | 3035 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 52,272 psi | 86% | 3087 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 90% | 52,982 psi | 87% | 3035 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,183 psi | 82% | 3015 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,246 psi | 61% | 1929 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 52,707 psi | 87% | 2953 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,330 psi | 88% | 3061 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 51,648 psi | 85% | 3012 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,114 psi | 89% | 3104 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,992 psi | 76% | 3045 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 84% | 52,634 psi | 86% | 2946 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,665 psi | 90% | 3012 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 94% | 51,692 psi | 85% | 3015 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 86% | 51,996 psi | 85% | 2940 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,664 psi | 88% | 2963 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 53,911 psi | 89% | 2936 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 51,735 psi | 85% | 2953 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,375 psi | 89% | 3012 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,606 psi | 88% | 2828 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 53,287 psi | 87% | 2917 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,694 psi | 90% | 3068 fps | 98.9% |
| Somchem S355 | <<locked>> | 84% | 52,721 psi | 87% | 2946 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 52,576 psi | 86% | 2943 fps | 96.7% |
| Somchem S365 | <<locked>> | 92% | 53,940 psi | 89% | 3035 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 52,301 psi | 86% | 2989 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 86% | 53,780 psi | 88% | 2913 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 52,779 psi | 87% | 2972 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 51,619 psi | 85% | 2963 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 82% | 54,824 psi | 90% | 2917 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 51,895 psi | 85% | 2976 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 53,040 psi | 87% | 3045 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,330 psi | 88% | 3107 fps | 97.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,936 psi | 80% | 3012 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 52,359 psi | 86% | 2936 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,186 psi | 89% | 3048 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,125 psi | 82% | 3143 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 52,112 psi | 86% | 2979 fps | 98.4% |
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 2700 | <<locked>> | 80% | 51,445 psi | 84% | 2890 fps | 98.8% |
| Accurate 3100 | <<locked>> | 84% | 32,750 psi | 54% | 2585 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 50,734 psi | 83% | 2874 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,030 psi | 64% | 2753 fps | 99.1% |
| Accurate MAGPRO | 68.5 gr | 94% | 48,370 psi | 79% | 3018 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 48,066 psi | 79% | 2861 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,582 psi | 67% | 2799 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 92% | 44,222 psi | 73% | 2904 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 98% | 34,780 psi | 57% | 2726 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,741 psi | 67% | 2795 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,660 psi | 80% | 2884 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,913 psi | 62% | 2762 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,526 psi | 71% | 2897 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,292 psi | 66% | 2789 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 88% | 37,927 psi | 62% | 2779 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,702 psi | 45% | 2503 fps | 97.4% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,502 psi | 52% | 2635 fps | 95.9% |
| Alliant Reloder-26 | 59 gr | 80% | 29,718 psi | 49% | 2621 fps | 95.9% |
| Bofors RP15 | <<locked>> | 92% | 40,103 psi | 66% | 2828 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 49,052 psi | 81% | 2894 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 37,927 psi | 62% | 2779 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 42,975 psi | 71% | 2769 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 98% | 43,366 psi | 71% | 2877 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 49,414 psi | 81% | 2910 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 41,089 psi | 67% | 2802 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 44,106 psi | 72% | 2828 fps | 97% |
| Hodgdon H4831 | <<locked>> | 92% | 47,384 psi | 78% | 2913 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 46,456 psi | 76% | 2894 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,534 psi | 58% | 2648 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,478 psi | 62% | 2838 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 40,059 psi | 66% | 2815 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,238 psi | 45% | 1686 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,575 psi | 83% | 2894 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,609 psi | 63% | 2694 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,396 psi | 73% | 2799 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 37,434 psi | 61% | 2700 fps | 98.9% |
| IMR 4955 Enduron | <<locked>> | 90% | 46,166 psi | 76% | 2851 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 94% | 45,266 psi | 74% | 2940 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 50,676 psi | 83% | 2887 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,800 psi | 69% | 2746 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 40,045 psi | 66% | 2726 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 31,908 psi | 52% | 2562 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 51,300 psi | 84% | 2943 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,901 psi | 67% | 2782 fps | 95.6% |
| Norma MRP | 60.1 gr | 84% | 34,505 psi | 57% | 2723 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 38,856 psi | 64% | 2746 fps | 99% |
| Ramshot Grand | <<locked>> | 92% | 41,901 psi | 69% | 2877 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 37,768 psi | 62% | 2736 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 92% | 37,130 psi | 61% | 2746 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,630 psi | 45% | 1722 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,385 psi | 81% | 2897 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,267 psi | 76% | 2946 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,928 psi | 64% | 2769 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,594 psi | 62% | 2779 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 34,418 psi | 56% | 2749 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 46,093 psi | 76% | 2838 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,875 psi | 74% | 2835 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 86% | 39,247 psi | 64% | 2769 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 42,975 psi | 71% | 2769 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,800 psi | 69% | 2746 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 50,676 psi | 83% | 2887 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,045 psi | 66% | 2726 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,572 psi | 78% | 2900 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,282 psi | 78% | 2736 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,886 psi | 67% | 2687 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,885 psi | 64% | 2762 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 46,369 psi | 76% | 2838 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 45,977 psi | 75% | 2825 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 35,360 psi | 58% | 2700 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 37,231 psi | 61% | 2690 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 44,324 psi | 73% | 2762 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,306 psi | 66% | 2746 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 36,898 psi | 61% | 2674 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 51,372 psi | 84% | 2867 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,726 psi | 65% | 2746 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 30,690 psi | 50% | 2582 fps | 97.4% |
| Vihtavuori N560 | <<locked>> | 92% | 46,224 psi | 76% | 2972 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 98% | 45,382 psi | 75% | 2943 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,305 psi | 65% | 2710 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,321 psi | 68% | 2808 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,381 psi | 40% | 2474 fps | 96.3% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,233 psi | 64% | 2733 fps | 95.3% |
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 82 powders for 7 mm Blaser Mag. loaded with the .284 | 145gr | Peregrine Glider GRM. Alliant Reloder-26 delivers the highest muzzle velocity at 3,163 fps; across all powders the maximum-charge window runs from 1,883 fps to 3,163 fps. ADI AR 2225 gives the best case fill at 100 %, and 82 of the 82 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 145.0 gr projectile in 0.284" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, 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, Norma MRP rank at the top here: for 7 mm Blaser Mag. with the .284 | 145gr | 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.