Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 160gr | Peregrine Glider GRM bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Accurate MAGPRO.
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% | 53,142 psi | 87% | 2861 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,795 psi | 90% | 2897 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 51,692 psi | 85% | 2949 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 82% | 53,519 psi | 88% | 2812 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 52,431 psi | 86% | 2900 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 96% | 53,650 psi | 88% | 2956 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,512 psi | 73% | 2782 fps | 96.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,349 psi | 65% | 2740 fps | 98.5% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 52,591 psi | 86% | 2897 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 52,591 psi | 86% | 2897 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,433 psi | 89% | 2835 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 52,489 psi | 86% | 2904 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,388 psi | 88% | 2917 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 51,895 psi | 85% | 2887 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,229 psi | 87% | 2953 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,099 psi | 89% | 2923 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,864 psi | 82% | 2927 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,331 psi | 89% | 3015 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 52,156 psi | 86% | 2933 fps | 99.1% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,788 psi | 75% | 2858 fps | 97.7% |
| Bofors RP5 | <<locked>> | 96% | 53,229 psi | 87% | 2953 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 54,462 psi | 89% | 2848 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,153 psi | 81% | 2874 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 86% | 53,403 psi | 88% | 2900 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 52,939 psi | 87% | 2861 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 94% | 53,592 psi | 88% | 2894 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,489 psi | 86% | 2877 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 52,692 psi | 87% | 2825 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,747 psi | 80% | 2982 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 86% | 53,635 psi | 88% | 2940 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,724 psi | 60% | 1791 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 52,504 psi | 86% | 2835 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 52,852 psi | 87% | 2825 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 51,793 psi | 85% | 2838 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,056 psi | 90% | 2884 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 98% | 54,897 psi | 90% | 2989 fps | 98.8% |
| Lovex S065 | <<locked>> | 86% | 52,924 psi | 87% | 2818 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,462 psi | 89% | 2864 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,473 psi | 83% | 2818 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 53,301 psi | 88% | 2887 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 34,838 psi | 57% | 2661 fps | 96.4% |
| Norma MRP | <<locked>> | 94% | 52,866 psi | 87% | 2976 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 53,679 psi | 88% | 2884 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 51,576 psi | 85% | 2946 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 88% | 52,591 psi | 86% | 2890 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,635 psi | 88% | 2943 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,362 psi | 61% | 1834 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 52,895 psi | 87% | 2904 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,114 psi | 90% | 2927 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,417 psi | 88% | 2953 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,153 psi | 81% | 2982 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 82% | 51,938 psi | 85% | 2795 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 53,751 psi | 88% | 2867 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 94% | 54,839 psi | 90% | 2933 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 54,462 psi | 89% | 2848 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 52,924 psi | 87% | 2818 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,462 psi | 89% | 2864 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,577 psi | 88% | 2858 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,576 psi | 86% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 52,301 psi | 86% | 2769 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,389 psi | 89% | 2930 fps | 99.4% |
| Somchem S355 | <<locked>> | 82% | 51,909 psi | 85% | 2792 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 51,750 psi | 85% | 2805 fps | 97.5% |
| Somchem S365 | <<locked>> | 90% | 53,447 psi | 88% | 2884 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 51,764 psi | 85% | 2851 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 84% | 52,997 psi | 87% | 2766 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 52,098 psi | 86% | 2825 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,636 psi | 90% | 2881 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 88% | 54,621 psi | 90% | 2881 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 52,736 psi | 87% | 2897 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 52,939 psi | 87% | 2969 fps | 98.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,170 psi | 86% | 2940 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 51,517 psi | 85% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,635 psi | 88% | 2904 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,824 psi | 90% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 51,634 psi | 85% | 2841 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% | 30,516 psi | 50% | 2415 fps | 96.1% |
| Accurate 4350 | <<locked>> | 80% | 41,597 psi | 68% | 2674 fps | 99.8% |
| Accurate MAGPRO | 64.2 gr | 90% | 44,875 psi | 74% | 2825 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 50,270 psi | 83% | 2762 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 37,434 psi | 61% | 2608 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 88% | 40,886 psi | 67% | 2713 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 98% | 41,669 psi | 68% | 2723 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 94% | 32,387 psi | 53% | 2556 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 37,695 psi | 62% | 2608 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 37,695 psi | 62% | 2608 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,126 psi | 84% | 2785 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,277 psi | 66% | 2690 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,253 psi | 76% | 2808 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,333 psi | 61% | 2602 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 84% | 35,317 psi | 58% | 2598 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,501 psi | 48% | 2448 fps | 99% |
| Alliant Reloder-25 | <<locked>> | 82% | 27,528 psi | 45% | 2402 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 80% | 31,865 psi | 52% | 2572 fps | 98.1% |
| Bofors RP15 | <<locked>> | 88% | 37,420 psi | 61% | 2644 fps | 95.8% |
| Bofors RP30 | <<locked>> | 94% | 37,260 psi | 61% | 2674 fps | 95.1% |
| Bofors RP5 | <<locked>> | 84% | 35,317 psi | 58% | 2598 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 45,078 psi | 74% | 2687 fps | 98.6% |
| Hodgdon H1000 | <<locked>> | 92% | 37,347 psi | 61% | 2628 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 43,627 psi | 72% | 2730 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 80% | 46,253 psi | 76% | 2743 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 88% | 43,801 psi | 72% | 2720 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 42,917 psi | 70% | 2703 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,739 psi | 62% | 2572 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 34,998 psi | 57% | 2664 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 42,728 psi | 70% | 2746 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,470 psi | 45% | 1601 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,683 psi | 67% | 2618 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,499 psi | 76% | 2713 fps | 99.1% |
| IMR 4831 | <<locked>> | 80% | 39,740 psi | 65% | 2625 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 42,772 psi | 70% | 2661 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 90% | 41,742 psi | 69% | 2746 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 43,932 psi | 72% | 2664 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 42,192 psi | 69% | 2651 fps | 98.7% |
| Lovex S071 | <<locked>> | 84% | 29,907 psi | 49% | 2395 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 40,306 psi | 66% | 2648 fps | 96.5% |
| Norma 217 | <<locked>> | 98% | 32,445 psi | 53% | 2595 fps | 95.2% |
| Norma MRP | 56 gr | 80% | 31,966 psi | 52% | 2539 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 41,191 psi | 68% | 2667 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 38,638 psi | 63% | 2687 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 40,001 psi | 66% | 2661 fps | 98.8% |
| Ramshot Magnum | <<locked>> | 88% | 34,200 psi | 56% | 2566 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,920 psi | 46% | 1637 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,168 psi | 81% | 2851 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,437 psi | 68% | 2697 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,089 psi | 66% | 2713 fps | 99.6% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 31,763 psi | 52% | 2569 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 48,689 psi | 80% | 2746 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 41,452 psi | 68% | 2644 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 82% | 36,506 psi | 60% | 2585 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 45,078 psi | 74% | 2687 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,932 psi | 72% | 2664 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 42,192 psi | 69% | 2651 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,053 psi | 82% | 2802 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,298 psi | 81% | 2631 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,989 psi | 71% | 2608 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 36,172 psi | 59% | 2579 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 48,704 psi | 80% | 2743 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 42,250 psi | 69% | 2631 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 37,884 psi | 62% | 2625 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,490 psi | 57% | 2510 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 80% | 46,630 psi | 77% | 2667 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,685 psi | 70% | 2667 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 34,098 psi | 56% | 2493 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 41,887 psi | 69% | 2664 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 32,909 psi | 54% | 2520 fps | 98.9% |
| Vihtavuori N560 | 61.6 gr | 88% | 42,888 psi | 70% | 2782 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 94% | 42,424 psi | 70% | 2759 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,568 psi | 68% | 2628 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,627 psi | 72% | 2730 fps | 98.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,947 psi | 43% | 2441 fps | 98.8% |
| Winchester Supreme 780 | <<locked>> | 84% | 36,216 psi | 59% | 2549 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 76 powders for 7 mm Blaser Mag. loaded with the .284 | 160gr | Peregrine Glider GRM. Winchester StaBALL HD delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,791 fps to 3,061 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:8.0 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. Norma MRP, Vihtavuori N560, Accurate MAGPRO rank at the top here: for 7 mm Blaser Mag. with the .284 | 160gr | 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.