Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 166gr | Peregrine VRG-2 bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Winchester StaBALL HD and ReloadSwiss RS 76.
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.
A valid access license is required to use the Personalized Load Calculator.
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 3100 | <<locked>> | 94% | 55,085 psi | 90% | 2851 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 52,808 psi | 87% | 2828 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 53,867 psi | 88% | 2953 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 90% | 53,867 psi | 88% | 2890 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 92% | 51,634 psi | 85% | 2894 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,472 psi | 81% | 2854 fps | 98.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,077 psi | 72% | 2815 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,085 psi | 89% | 2887 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,969 psi | 90% | 2897 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 53,563 psi | 88% | 2884 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 92% | 51,648 psi | 85% | 2894 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 53,011 psi | 87% | 2867 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 52,272 psi | 86% | 2927 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 52,997 psi | 87% | 2949 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,664 psi | 88% | 2861 fps | 96.7% |
| Bofors RP15 | <<locked>> | 96% | 54,346 psi | 89% | 2936 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,764 psi | 85% | 2927 fps | 99.3% |
| Bofors RP5 | <<locked>> | 92% | 51,648 psi | 85% | 2894 fps | 99.6% |
| Bofors RP7 | <<locked>> | 82% | 51,967 psi | 85% | 2779 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,752 psi | 90% | 2943 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 84% | 54,810 psi | 90% | 2887 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 53,780 psi | 88% | 2844 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 90% | 51,619 psi | 85% | 2835 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,099 psi | 89% | 2874 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,302 psi | 89% | 2812 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,810 psi | 90% | 3058 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 51,126 psi | 84% | 2864 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,999 psi | 61% | 1788 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 53,621 psi | 88% | 2822 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 53,534 psi | 88% | 2805 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 53,345 psi | 88% | 2825 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 52,765 psi | 87% | 2822 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 94% | 53,200 psi | 87% | 2933 fps | 99.1% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 39,566 psi | 65% | 2717 fps | 96.6% |
| Lovex S065 | <<locked>> | 84% | 53,969 psi | 89% | 2802 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 52,286 psi | 86% | 2799 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 52,750 psi | 87% | 2818 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,375 psi | 89% | 2877 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 39,508 psi | 65% | 2740 fps | 98.7% |
| Norma MRP | <<locked>> | 90% | 51,459 psi | 84% | 2913 fps | 100% |
| Norma URP | <<locked>> | 84% | 51,750 psi | 85% | 2818 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 53,954 psi | 89% | 2956 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 53,925 psi | 89% | 2874 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 52,127 psi | 86% | 2887 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,869 psi | 62% | 1834 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 53,040 psi | 87% | 2858 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 51,300 psi | 84% | 2881 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 51,532 psi | 85% | 2992 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,401 psi | 83% | 2943 fps | 98.1% |
| Rottweil R 904 | <<locked>> | 88% | 51,764 psi | 85% | 2808 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 90% | 52,968 psi | 87% | 2871 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 82% | 51,967 psi | 85% | 2779 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 53,969 psi | 89% | 2802 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 52,286 psi | 86% | 2799 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 53,011 psi | 87% | 2753 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 52,547 psi | 86% | 2867 fps | 99.6% |
| Somchem S361 | <<locked>> | 88% | 53,069 psi | 87% | 2802 fps | 98.4% |
| Somchem S365 | <<locked>> | 86% | 51,953 psi | 85% | 2818 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 53,403 psi | 88% | 2844 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 53,911 psi | 89% | 2743 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 53,316 psi | 88% | 2808 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 52,895 psi | 87% | 2825 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 84% | 52,460 psi | 86% | 2812 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,984 psi | 90% | 2887 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 51,387 psi | 84% | 2907 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 98% | 54,781 psi | 90% | 2949 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,503 psi | 85% | 2946 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 52,823 psi | 87% | 2769 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,810 psi | 90% | 2887 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,491 psi | 89% | 2999 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 53,214 psi | 87% | 2838 fps | 99.6% |
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% | 34,113 psi | 56% | 2470 fps | 98.1% |
| Accurate 4350 | <<locked>> | 80% | 46,079 psi | 76% | 2720 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 40,524 psi | 67% | 2700 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 38,348 psi | 63% | 2598 fps | 96.9% |
| ADI AR 2213 | <<locked>> | 84% | 39,349 psi | 65% | 2651 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 92% | 37,768 psi | 62% | 2615 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 88% | 29,631 psi | 49% | 2451 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,411 psi | 73% | 2730 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,169 psi | 84% | 2841 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,551 psi | 63% | 2598 fps | 97% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,229 psi | 56% | 2536 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,866 psi | 54% | 2500 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,471 psi | 47% | 2408 fps | 96.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,984 psi | 59% | 2638 fps | 99.6% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 47,369 psi | 78% | 2746 fps | 95% |
| Bofors RP15 | <<locked>> | 82% | 33,982 psi | 56% | 2530 fps | 95.3% |
| Bofors RP30 | <<locked>> | 90% | 36,579 psi | 60% | 2625 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 34,229 psi | 56% | 2536 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 48,733 psi | 80% | 2726 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 88% | 36,114 psi | 59% | 2575 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 47,732 psi | 78% | 2772 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 50,488 psi | 83% | 2789 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 82% | 39,160 psi | 64% | 2595 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,292 psi | 68% | 2641 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,713 psi | 68% | 2612 fps | 100% |
| Hodgdon Retumbo | 61.7 gr | 86% | 34,113 psi | 56% | 2615 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 80% | 47,616 psi | 78% | 2805 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,673 psi | 45% | 1598 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,164 psi | 73% | 2657 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,314 psi | 83% | 2753 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 43,845 psi | 72% | 2667 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 38,276 psi | 63% | 2543 fps | 95% |
| IMR 7828 SSC | <<locked>> | 84% | 37,782 psi | 62% | 2628 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 98% | 36,999 psi | 61% | 2657 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 47,587 psi | 78% | 2697 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 45,861 psi | 75% | 2690 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 29,269 psi | 48% | 2346 fps | 96.3% |
| Norma 204 | <<locked>> | 80% | 44,280 psi | 73% | 2700 fps | 98.2% |
| Norma 217 | <<locked>> | 94% | 32,213 psi | 53% | 2559 fps | 96.1% |
| Norma MRP | <<locked>> | 80% | 35,723 psi | 59% | 2602 fps | 97.6% |
| Norma URP | <<locked>> | 80% | 45,165 psi | 74% | 2707 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 37,318 psi | 61% | 2631 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 44,092 psi | 72% | 2710 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 84% | 33,054 psi | 54% | 2507 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,340 psi | 47% | 1637 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,079 psi | 76% | 2746 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,396 psi | 73% | 2766 fps | 100% |
| ReloadSwiss RS 76 | 64.5 gr | 84% | 30,908 psi | 51% | 2520 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 39,885 psi | 65% | 2733 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 39,711 psi | 65% | 2579 fps | 96.1% |
| Rottweil R 905 | <<locked>> | 80% | 37,681 psi | 62% | 2579 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 80% | 48,733 psi | 80% | 2726 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,587 psi | 78% | 2697 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 45,861 psi | 75% | 2690 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,615 psi | 77% | 2651 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,362 psi | 61% | 2575 fps | 96.8% |
| Somchem S361 | <<locked>> | 80% | 40,466 psi | 66% | 2572 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 42,134 psi | 69% | 2661 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,261 psi | 63% | 2566 fps | 97.8% |
| Vihtavuori N150 | <<locked>> | 80% | 50,546 psi | 83% | 2694 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,818 psi | 77% | 2703 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,141 psi | 54% | 2438 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 46,006 psi | 76% | 2707 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,811 psi | 60% | 2572 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 82% | 38,653 psi | 63% | 2657 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 88% | 38,740 psi | 64% | 2648 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 94% | 41,408 psi | 68% | 2753 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,832 psi | 75% | 2664 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,979 psi | 79% | 2776 fps | 99.8% |
| Winchester StaBALL HD | 58.9 gr | 80% | 29,066 psi | 48% | 2520 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 34,969 psi | 57% | 2490 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 76 powders for 7 mm Blaser Mag. loaded with the .284 | 166gr | Peregrine VRG-2. Hodgdon Retumbo delivers the highest muzzle velocity at 3,058 fps; across all powders the maximum-charge window runs from 1,788 fps to 3,058 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 61–90 %, leaving at least 10 % headroom. The 166.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, ADI AR 2225 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. Hodgdon Retumbo, Winchester StaBALL HD, ReloadSwiss RS 76 rank at the top here: for 7 mm Blaser Mag. with the .284 | 166gr | Peregrine VRG-2 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, Alliant Reloder-33, IMR 7977 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.