Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 170gr | Sako Hammerhead bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 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>> | 92% | 54,070 psi | 89% | 2799 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 51,735 psi | 85% | 2772 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 52,576 psi | 86% | 2897 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 88% | 52,388 psi | 86% | 2831 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 92% | 53,722 psi | 88% | 2894 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,619 psi | 85% | 2858 fps | 99.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,253 psi | 76% | 2825 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 52,794 psi | 87% | 2831 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 52,794 psi | 87% | 2831 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 84% | 52,837 psi | 87% | 2831 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 52,199 psi | 86% | 2825 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 92% | 53,954 psi | 89% | 2894 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 92% | 51,924 psi | 85% | 2812 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 54,679 psi | 90% | 2923 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 51,837 psi | 85% | 2894 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 52,054 psi | 85% | 2802 fps | 96.6% |
| Bofors RP15 | <<locked>> | 94% | 53,171 psi | 87% | 2877 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,360 psi | 89% | 2930 fps | 99.6% |
| Bofors RP5 | <<locked>> | 92% | 53,954 psi | 89% | 2894 fps | 99.8% |
| Bofors RP7 | <<locked>> | 82% | 53,809 psi | 88% | 2772 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 98% | 53,316 psi | 88% | 2887 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 82% | 53,185 psi | 87% | 2825 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 53,621 psi | 88% | 2835 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 90% | 52,678 psi | 86% | 2818 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 52,895 psi | 87% | 2753 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 53,708 psi | 88% | 3005 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 53,287 psi | 87% | 2861 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,289 psi | 61% | 1772 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 52,156 psi | 86% | 2762 fps | 99.9% |
| IMR 4831 | <<locked>> | 84% | 52,112 psi | 86% | 2766 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,563 psi | 90% | 2815 fps | 99% |
| IMR 7828 SSC | <<locked>> | 92% | 51,880 psi | 85% | 2874 fps | 99.1% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,901 psi | 69% | 2733 fps | 97.6% |
| Lovex S065 | <<locked>> | 82% | 52,576 psi | 86% | 2743 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,288 psi | 89% | 2795 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 51,880 psi | 85% | 2769 fps | 100% |
| Norma 204 | <<locked>> | 84% | 52,881 psi | 87% | 2818 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 41,989 psi | 69% | 2756 fps | 99.3% |
| Norma MRP | <<locked>> | 90% | 53,911 psi | 89% | 2913 fps | 100% |
| Norma URP | <<locked>> | 84% | 53,824 psi | 88% | 2812 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 52,431 psi | 86% | 2894 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 84% | 52,605 psi | 86% | 2818 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 54,752 psi | 90% | 2890 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,232 psi | 63% | 1814 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 51,721 psi | 85% | 2799 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 53,505 psi | 88% | 2877 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,157 psi | 89% | 2995 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,214 psi | 87% | 2953 fps | 98.7% |
| Rottweil R 904 | <<locked>> | 88% | 53,621 psi | 88% | 2805 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 88% | 51,663 psi | 85% | 2812 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 82% | 53,809 psi | 88% | 2772 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 82% | 52,576 psi | 86% | 2743 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,288 psi | 89% | 2795 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 54,940 psi | 90% | 2746 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 54,723 psi | 90% | 2864 fps | 99.8% |
| Somchem S361 | <<locked>> | 88% | 55,042 psi | 90% | 2799 fps | 98.9% |
| Somchem S365 | <<locked>> | 86% | 54,317 psi | 89% | 2812 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 51,996 psi | 85% | 2785 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 82% | 51,938 psi | 85% | 2749 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 55,085 psi | 90% | 2822 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 54,534 psi | 90% | 2805 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 53,983 psi | 89% | 2835 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 53,650 psi | 88% | 2910 fps | 99% |
| Vihtavuori N565 | <<locked>> | 96% | 53,563 psi | 88% | 2894 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,172 psi | 89% | 2956 fps | 98.4% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 51,097 psi | 84% | 2943 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,781 psi | 90% | 2756 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 53,432 psi | 88% | 2828 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 53,272 psi | 87% | 2943 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 51,880 psi | 85% | 2782 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% | 36,274 psi | 60% | 2484 fps | 98.8% |
| Accurate 4350 | <<locked>> | 80% | 48,399 psi | 79% | 2723 fps | 100% |
| Accurate MAGPRO | 62.1 gr | 82% | 39,769 psi | 65% | 2648 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 80% | 40,277 psi | 66% | 2608 fps | 97.7% |
| ADI AR 2213 | <<locked>> | 82% | 38,348 psi | 63% | 2595 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 90% | 37,115 psi | 61% | 2566 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 86% | 29,457 psi | 48% | 2418 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,669 psi | 67% | 2608 fps | 97.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,669 psi | 67% | 2608 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,282 psi | 76% | 2726 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,292 psi | 66% | 2602 fps | 97.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,129 psi | 59% | 2549 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,751 psi | 57% | 2507 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,269 psi | 50% | 2428 fps | 97.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,261 psi | 63% | 2651 fps | 99.9% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 46,050 psi | 76% | 2690 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 33,707 psi | 55% | 2487 fps | 95.5% |
| Bofors RP30 | <<locked>> | 88% | 36,245 psi | 60% | 2585 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 36,129 psi | 59% | 2549 fps | 96.6% |
| Bofors RP7 | <<locked>> | 80% | 50,517 psi | 83% | 2720 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 86% | 35,346 psi | 58% | 2526 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 49,937 psi | 82% | 2772 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 80% | 38,348 psi | 63% | 2546 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 82% | 40,190 psi | 66% | 2585 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,613 psi | 72% | 2608 fps | 100% |
| Hodgdon Retumbo | 58.7 gr | 82% | 31,488 psi | 52% | 2503 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 49,690 psi | 82% | 2802 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,963 psi | 46% | 1581 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,050 psi | 76% | 2661 fps | 99.4% |
| IMR 4831 | <<locked>> | 80% | 45,847 psi | 75% | 2667 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,030 psi | 66% | 2546 fps | 95.9% |
| IMR 7828 SSC | <<locked>> | 82% | 36,898 psi | 61% | 2572 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 96% | 36,680 psi | 60% | 2615 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 49,443 psi | 81% | 2694 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,979 psi | 79% | 2690 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 31,299 psi | 51% | 2365 fps | 97.4% |
| Norma 204 | <<locked>> | 80% | 46,122 psi | 76% | 2700 fps | 98.8% |
| Norma 217 | <<locked>> | 90% | 30,124 psi | 49% | 2464 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 37,753 psi | 62% | 2615 fps | 98.4% |
| Norma URP | <<locked>> | 80% | 47,326 psi | 78% | 2710 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 36,535 psi | 60% | 2579 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 45,963 psi | 75% | 2707 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 30,327 psi | 50% | 2402 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,674 psi | 47% | 1621 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,269 psi | 79% | 2743 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,412 psi | 76% | 2762 fps | 100% |
| ReloadSwiss RS 76 | 62.8 gr | 82% | 30,443 psi | 50% | 2477 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 39,363 psi | 65% | 2687 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 41,568 psi | 68% | 2585 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 80% | 39,552 psi | 65% | 2585 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 80% | 50,517 psi | 83% | 2720 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,443 psi | 81% | 2694 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,979 psi | 79% | 2690 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,428 psi | 80% | 2644 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,218 psi | 64% | 2582 fps | 97.6% |
| Somchem S361 | <<locked>> | 80% | 42,206 psi | 69% | 2572 fps | 96.3% |
| Somchem S365 | <<locked>> | 80% | 44,483 psi | 73% | 2664 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,205 psi | 66% | 2569 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 80% | 48,718 psi | 80% | 2700 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,911 psi | 57% | 2448 fps | 96.7% |
| Vihtavuori N550 | <<locked>> | 80% | 47,950 psi | 79% | 2703 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,131 psi | 64% | 2582 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 37,840 psi | 62% | 2605 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 86% | 38,261 psi | 63% | 2602 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 92% | 40,741 psi | 67% | 2703 fps | 95.1% |
| Vihtavuori N570 | <<locked>> | 98% | 47,558 psi | 78% | 2877 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,688 psi | 78% | 2657 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,937 psi | 82% | 2772 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,937 psi | 51% | 2539 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,753 psi | 60% | 2497 fps | 96.7% |
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 70 powders for 7 mm Blaser Mag. loaded with the .284 | 170gr | Sako Hammerhead. Hodgdon Retumbo delivers the highest muzzle velocity at 3,005 fps; across all powders the maximum-charge window runs from 1,772 fps to 3,005 fps. ADI AR 2217 gives the best case fill at 100 %, and 70 of the 70 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 170.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Bofors RP30 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, ReloadSwiss RS 76, Accurate MAGPRO rank at the top here: for 7 mm Blaser Mag. with the .284 | 170gr | Sako Hammerhead 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.