Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 175gr | Sierra GameKing bullet and 69 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% | 54,549 psi | 90% | 2766 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 52,170 psi | 86% | 2740 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 53,142 psi | 87% | 2867 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 88% | 52,924 psi | 87% | 2802 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 92% | 54,186 psi | 89% | 2864 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,199 psi | 86% | 2831 fps | 99.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,659 psi | 77% | 2795 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 53,301 psi | 88% | 2795 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 52,518 psi | 86% | 2792 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,433 psi | 89% | 2861 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 52,315 psi | 86% | 2779 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 51,764 psi | 85% | 2841 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 52,417 psi | 86% | 2864 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 48,559 psi | 80% | 2844 fps | 96.1% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 52,489 psi | 86% | 2776 fps | 97% |
| Bofors RP15 | <<locked>> | 94% | 53,650 psi | 88% | 2848 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 55,042 psi | 90% | 2900 fps | 99.8% |
| Bofors RP5 | <<locked>> | 92% | 54,433 psi | 89% | 2861 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 54,375 psi | 89% | 2743 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 53,693 psi | 88% | 2854 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 53,650 psi | 88% | 2795 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 54,041 psi | 89% | 2802 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 90% | 53,055 psi | 87% | 2785 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 53,577 psi | 88% | 2723 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,070 psi | 89% | 2969 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 53,940 psi | 89% | 2831 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,362 psi | 61% | 1742 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 52,576 psi | 86% | 2730 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 52,562 psi | 86% | 2733 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,114 psi | 90% | 2785 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 92% | 52,315 psi | 86% | 2844 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,235 psi | 69% | 2707 fps | 97.9% |
| Lovex S065 | <<locked>> | 82% | 53,127 psi | 87% | 2710 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,737 psi | 90% | 2759 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 52,547 psi | 86% | 2740 fps | 100% |
| Norma 204 | <<locked>> | 84% | 53,156 psi | 87% | 2782 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 42,569 psi | 70% | 2733 fps | 99.5% |
| Norma MRP | <<locked>> | 90% | 54,433 psi | 89% | 2881 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,259 psi | 89% | 2776 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 52,953 psi | 87% | 2864 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 52,924 psi | 87% | 2782 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 51,242 psi | 84% | 2799 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,116 psi | 63% | 1781 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 52,243 psi | 86% | 2766 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,201 psi | 89% | 2844 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,752 psi | 90% | 2966 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,650 psi | 88% | 2923 fps | 99% |
| Rottweil R 904 | <<locked>> | 88% | 54,143 psi | 89% | 2776 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 88% | 52,214 psi | 86% | 2782 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 54,375 psi | 89% | 2743 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 53,127 psi | 87% | 2710 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,737 psi | 90% | 2759 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 51,924 psi | 85% | 2664 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 51,837 psi | 85% | 2779 fps | 99.7% |
| Somchem S361 | <<locked>> | 86% | 51,924 psi | 85% | 2713 fps | 98.6% |
| Somchem S365 | <<locked>> | 86% | 54,839 psi | 90% | 2776 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 52,591 psi | 86% | 2756 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 52,330 psi | 86% | 2713 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 52,069 psi | 85% | 2736 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 55,042 psi | 90% | 2772 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,607 psi | 90% | 2802 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,143 psi | 89% | 2881 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 96% | 54,186 psi | 89% | 2864 fps | 99.3% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,737 psi | 90% | 2923 fps | 98.7% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 51,619 psi | 85% | 2917 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 51,547 psi | 85% | 2674 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 53,896 psi | 88% | 2799 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 54,070 psi | 89% | 2910 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 52,272 psi | 86% | 2753 fps | 99.7% |
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% | 36,608 psi | 60% | 2457 fps | 99.1% |
| Accurate 4350 | <<locked>> | 80% | 48,805 psi | 80% | 2690 fps | 100% |
| Accurate MAGPRO | 61.3 gr | 82% | 40,277 psi | 66% | 2625 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 40,567 psi | 67% | 2579 fps | 98% |
| ADI AR 2213 | <<locked>> | 80% | 36,201 psi | 59% | 2513 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 88% | 35,157 psi | 58% | 2487 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 86% | 29,776 psi | 49% | 2395 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,615 psi | 77% | 2690 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,625 psi | 67% | 2575 fps | 98% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,448 psi | 60% | 2523 fps | 97% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,244 psi | 58% | 2480 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,530 psi | 50% | 2405 fps | 98.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,740 psi | 64% | 2628 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 45,179 psi | 74% | 2779 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 46,340 psi | 76% | 2661 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 33,997 psi | 56% | 2461 fps | 96% |
| Bofors RP30 | <<locked>> | 86% | 34,200 psi | 56% | 2500 fps | 95.4% |
| Bofors RP5 | <<locked>> | 80% | 36,448 psi | 60% | 2523 fps | 97% |
| Bofors RP7 | <<locked>> | 80% | 51,039 psi | 84% | 2690 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 33,446 psi | 55% | 2448 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 50,314 psi | 83% | 2740 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 38,653 psi | 63% | 2516 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 37,927 psi | 62% | 2503 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,106 psi | 72% | 2579 fps | 100% |
| Hodgdon Retumbo | 57.9 gr | 82% | 31,792 psi | 52% | 2484 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 50,053 psi | 82% | 2769 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,905 psi | 46% | 1555 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,369 psi | 76% | 2628 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 46,195 psi | 76% | 2635 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,306 psi | 66% | 2520 fps | 96.3% |
| IMR 7828 SSC | <<locked>> | 82% | 37,434 psi | 61% | 2552 fps | 96% |
| IMR 8133 Enduron | <<locked>> | 94% | 34,708 psi | 57% | 2536 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 49,908 psi | 82% | 2661 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,254 psi | 79% | 2657 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 31,676 psi | 52% | 2343 fps | 97.8% |
| Norma 204 | <<locked>> | 80% | 46,485 psi | 76% | 2671 fps | 99% |
| Norma 217 | <<locked>> | 90% | 30,530 psi | 50% | 2448 fps | 96% |
| Norma MRP | <<locked>> | 80% | 38,334 psi | 63% | 2592 fps | 98.7% |
| Norma URP | <<locked>> | 80% | 47,659 psi | 78% | 2674 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 34,505 psi | 57% | 2497 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 46,383 psi | 76% | 2677 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 30,661 psi | 50% | 2382 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,645 psi | 47% | 1594 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,733 psi | 80% | 2713 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,920 psi | 77% | 2733 fps | 100% |
| ReloadSwiss RS 76 | 60.5 gr | 80% | 28,790 psi | 47% | 2395 fps | 95.4% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 39,726 psi | 65% | 2664 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 41,843 psi | 69% | 2556 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 80% | 40,074 psi | 66% | 2562 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 80% | 51,039 psi | 84% | 2690 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,908 psi | 82% | 2661 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,254 psi | 79% | 2657 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,776 psi | 80% | 2612 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,740 psi | 65% | 2556 fps | 98% |
| Somchem S361 | <<locked>> | 80% | 42,598 psi | 70% | 2546 fps | 96.7% |
| Somchem S365 | <<locked>> | 80% | 44,875 psi | 74% | 2631 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,524 psi | 67% | 2543 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 80% | 49,066 psi | 81% | 2667 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,186 psi | 58% | 2421 fps | 97.1% |
| Vihtavuori N550 | <<locked>> | 80% | 48,312 psi | 79% | 2671 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,450 psi | 65% | 2552 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,406 psi | 63% | 2582 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 84% | 36,100 psi | 59% | 2520 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 92% | 41,249 psi | 68% | 2680 fps | 95.6% |
| Vihtavuori N570 | <<locked>> | 98% | 48,254 psi | 79% | 2854 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,167 psi | 79% | 2625 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,314 psi | 83% | 2740 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 31,430 psi | 52% | 2516 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,101 psi | 61% | 2474 fps | 97.1% |
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 69 powders for 7 mm Blaser Mag. loaded with the .284 | 175gr | Sierra GameKing. Hodgdon Retumbo delivers the highest muzzle velocity at 2,969 fps; across all powders the maximum-charge window runs from 1,742 fps to 2,969 fps. ADI AR 2217 gives the best case fill at 100 %, and 69 of the 69 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 175.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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 | 175gr | Sierra GameKing 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.