Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 161gr | Peregrine VLR-4 bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Ramshot Grand and Alliant Reloder-26.
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% | 54,056 psi | 89% | 2867 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 51,982 psi | 85% | 2848 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 52,852 psi | 87% | 2963 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 82% | 54,157 psi | 89% | 2818 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 53,055 psi | 87% | 2907 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 54,491 psi | 89% | 2966 fps | 98.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,440 psi | 75% | 2795 fps | 97.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,176 psi | 66% | 2756 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,114 psi | 90% | 2838 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 53,214 psi | 87% | 2910 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,433 psi | 89% | 2923 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 52,779 psi | 87% | 2897 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,128 psi | 89% | 2963 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,085 psi | 90% | 2930 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,705 psi | 83% | 2936 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 51,445 psi | 84% | 2966 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 53,040 psi | 87% | 2943 fps | 99.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,615 psi | 77% | 2867 fps | 98% |
| Bofors RP5 | <<locked>> | 96% | 54,128 psi | 89% | 2963 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 55,071 psi | 90% | 2851 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,154 psi | 82% | 2887 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 86% | 54,041 psi | 89% | 2904 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 53,592 psi | 88% | 2864 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 94% | 54,447 psi | 89% | 2904 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 53,330 psi | 88% | 2887 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 53,403 psi | 88% | 2828 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,806 psi | 82% | 2999 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 86% | 54,563 psi | 90% | 2946 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,753 psi | 60% | 1791 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 53,345 psi | 88% | 2841 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,432 psi | 88% | 2828 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 52,692 psi | 87% | 2844 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 52,286 psi | 86% | 2835 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 96% | 52,243 psi | 86% | 2943 fps | 98.5% |
| Lovex S065 | <<locked>> | 86% | 53,795 psi | 88% | 2825 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,085 psi | 90% | 2871 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,387 psi | 84% | 2828 fps | 100% |
| Norma 204 | <<locked>> | 88% | 53,896 psi | 88% | 2894 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 35,491 psi | 58% | 2671 fps | 96.8% |
| Norma MRP | <<locked>> | 94% | 53,824 psi | 88% | 2982 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 54,360 psi | 89% | 2887 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 52,736 psi | 87% | 2963 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 53,243 psi | 87% | 2894 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,839 psi | 90% | 2956 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,623 psi | 62% | 1834 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 53,650 psi | 88% | 2910 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 52,112 psi | 86% | 2874 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,346 psi | 89% | 2963 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,183 psi | 82% | 2995 fps | 100% |
| Rottweil R 903 | <<locked>> | 82% | 52,634 psi | 86% | 2802 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,621 psi | 90% | 2877 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 92% | 52,011 psi | 85% | 2884 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 55,071 psi | 90% | 2851 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,795 psi | 88% | 2825 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,085 psi | 90% | 2871 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,230 psi | 89% | 2861 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,214 psi | 87% | 2680 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,113 psi | 87% | 2779 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 51,590 psi | 85% | 2877 fps | 99.2% |
| Somchem S355 | <<locked>> | 82% | 52,576 psi | 86% | 2795 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 52,504 psi | 86% | 2812 fps | 97.8% |
| Somchem S365 | <<locked>> | 90% | 54,476 psi | 89% | 2890 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 52,591 psi | 86% | 2858 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 53,911 psi | 89% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 52,750 psi | 87% | 2828 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 52,069 psi | 85% | 2835 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 51,953 psi | 85% | 2835 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,737 psi | 88% | 2907 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 53,824 psi | 88% | 2976 fps | 98.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,055 psi | 87% | 2949 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 52,344 psi | 86% | 2792 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,288 psi | 89% | 2910 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 51,866 psi | 85% | 3012 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 52,475 psi | 86% | 2851 fps | 99.2% |
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% | 31,053 psi | 51% | 2421 fps | 96.4% |
| Accurate 4350 | <<locked>> | 80% | 42,293 psi | 69% | 2684 fps | 99.9% |
| Accurate MAGPRO | 63.3 gr | 88% | 42,409 psi | 70% | 2769 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 50,908 psi | 84% | 2766 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 35,578 psi | 58% | 2556 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 88% | 41,379 psi | 68% | 2717 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 96% | 39,653 psi | 65% | 2674 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 94% | 32,967 psi | 54% | 2569 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,822 psi | 85% | 2789 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,741 psi | 67% | 2690 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,992 psi | 77% | 2812 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 35,520 psi | 58% | 2552 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 84% | 35,868 psi | 59% | 2605 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,008 psi | 49% | 2457 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 27,949 psi | 46% | 2411 fps | 95.5% |
| Alliant Reloder-26 | 58.2 gr | 80% | 32,401 psi | 53% | 2582 fps | 98.4% |
| Bofors RP15 | <<locked>> | 86% | 35,592 psi | 58% | 2598 fps | 95.3% |
| Bofors RP30 | <<locked>> | 94% | 37,811 psi | 62% | 2684 fps | 95.4% |
| Bofors RP5 | <<locked>> | 84% | 35,868 psi | 59% | 2605 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 45,687 psi | 75% | 2694 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 92% | 37,971 psi | 62% | 2641 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 44,266 psi | 73% | 2736 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 47,094 psi | 77% | 2753 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 86% | 41,350 psi | 68% | 2664 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 88% | 43,468 psi | 71% | 2710 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,377 psi | 63% | 2579 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 35,636 psi | 59% | 2677 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 43,323 psi | 71% | 2753 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,572 psi | 45% | 1601 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,249 psi | 68% | 2625 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,079 psi | 77% | 2720 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 40,364 psi | 66% | 2631 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 40,683 psi | 67% | 2615 fps | 95% |
| IMR 7828 SSC | <<locked>> | 88% | 39,624 psi | 65% | 2694 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 44,498 psi | 73% | 2667 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 42,786 psi | 70% | 2654 fps | 98.9% |
| Lovex S071 | <<locked>> | 82% | 28,427 psi | 47% | 2349 fps | 95.2% |
| Norma 204 | <<locked>> | 80% | 40,872 psi | 67% | 2654 fps | 96.8% |
| Norma 217 | <<locked>> | 98% | 33,083 psi | 54% | 2608 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 32,503 psi | 53% | 2549 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 41,829 psi | 69% | 2674 fps | 99.9% |
| Ramshot Grand | 61.6 gr | 88% | 39,189 psi | 64% | 2697 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 40,582 psi | 67% | 2667 fps | 99% |
| Ramshot Magnum | <<locked>> | 88% | 34,853 psi | 57% | 2575 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,036 psi | 46% | 1637 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,937 psi | 82% | 2854 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,308 psi | 69% | 2707 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,683 psi | 67% | 2720 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 32,343 psi | 53% | 2585 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 49,342 psi | 81% | 2753 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 39,407 psi | 65% | 2595 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 34,490 psi | 57% | 2533 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 45,687 psi | 75% | 2694 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,498 psi | 73% | 2667 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 42,786 psi | 70% | 2654 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,720 psi | 83% | 2808 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,951 psi | 82% | 2635 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,540 psi | 71% | 2615 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 36,753 psi | 60% | 2589 fps | 95.9% |
| Somchem S355 | <<locked>> | 80% | 49,385 psi | 81% | 2746 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 42,946 psi | 71% | 2641 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 38,580 psi | 63% | 2631 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,230 psi | 58% | 2520 fps | 96.3% |
| Vihtavuori N150 | <<locked>> | 80% | 47,268 psi | 78% | 2674 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,323 psi | 71% | 2671 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 34,809 psi | 57% | 2503 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 42,482 psi | 70% | 2671 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 33,547 psi | 55% | 2530 fps | 99.1% |
| Vihtavuori N560 | <<locked>> | 86% | 40,770 psi | 67% | 2730 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 92% | 40,292 psi | 66% | 2710 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,322 psi | 69% | 2635 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,266 psi | 73% | 2736 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,397 psi | 43% | 2454 fps | 99.1% |
| Winchester Supreme 780 | <<locked>> | 84% | 36,927 psi | 61% | 2559 fps | 95.8% |
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 | 161gr | Peregrine VLR-4. Winchester StaBALL HD delivers the highest muzzle velocity at 3,012 fps; across all powders the maximum-charge window runs from 1,791 fps to 3,012 fps. ADI AR 2217 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 58–90 %, leaving at least 10 % headroom. The 161.0 gr projectile in 0.284" calls for a 1:8.5 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, Ramshot Grand, Alliant Reloder-26 rank at the top here: for 7 mm Blaser Mag. with the .284 | 161gr | Peregrine VLR-4 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, IMR 8133 Enduron 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.