Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 180gr | Sierra MatchKing bullet and 72 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 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>> | 92% | 55,013 psi | 90% | 2733 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 52,605 psi | 86% | 2703 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 52,634 psi | 86% | 2828 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 90% | 53,505 psi | 88% | 2831 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 88% | 53,301 psi | 88% | 2766 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 92% | 54,737 psi | 90% | 2831 fps | 99.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,388 psi | 86% | 2795 fps | 99.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,079 psi | 77% | 2766 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 53,447 psi | 88% | 2762 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 84% | 53,490 psi | 88% | 2756 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 52,837 psi | 87% | 2756 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,955 psi | 90% | 2828 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 52,750 psi | 87% | 2743 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 52,083 psi | 86% | 2805 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 52,794 psi | 87% | 2825 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 48,733 psi | 80% | 2812 fps | 96.4% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 52,562 psi | 86% | 2740 fps | 97.2% |
| Bofors RP15 | <<locked>> | 94% | 53,896 psi | 88% | 2812 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 51,677 psi | 85% | 2812 fps | 99.6% |
| Bofors RP5 | <<locked>> | 92% | 54,955 psi | 90% | 2828 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 54,476 psi | 89% | 2700 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 54,128 psi | 89% | 2822 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 53,882 psi | 88% | 2756 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 54,505 psi | 89% | 2769 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 53,490 psi | 88% | 2753 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 53,824 psi | 88% | 2684 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,578 psi | 90% | 2933 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,157 psi | 89% | 2792 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,391 psi | 61% | 1713 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 52,765 psi | 87% | 2694 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 53,011 psi | 87% | 2700 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 52,098 psi | 86% | 2697 fps | 98.9% |
| IMR 7828 SSC | <<locked>> | 92% | 52,605 psi | 86% | 2808 fps | 99.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,583 psi | 70% | 2674 fps | 98.2% |
| Lovex S065 | <<locked>> | 82% | 53,243 psi | 87% | 2671 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,911 psi | 90% | 2720 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 52,721 psi | 87% | 2703 fps | 100% |
| Norma 204 | <<locked>> | 84% | 53,476 psi | 88% | 2746 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 42,757 psi | 70% | 2697 fps | 99.7% |
| Norma MRP | <<locked>> | 90% | 54,752 psi | 90% | 2844 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,462 psi | 89% | 2736 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 53,345 psi | 88% | 2831 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 53,229 psi | 87% | 2746 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 51,445 psi | 84% | 2762 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,159 psi | 63% | 1752 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 52,562 psi | 86% | 2726 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,346 psi | 89% | 2805 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 55,114 psi | 90% | 2930 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,940 psi | 89% | 2887 fps | 99.1% |
| Rottweil R 904 | <<locked>> | 88% | 54,186 psi | 89% | 2733 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 88% | 52,330 psi | 86% | 2743 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 54,476 psi | 89% | 2700 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 53,243 psi | 87% | 2671 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,911 psi | 90% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 52,344 psi | 86% | 2631 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 51,924 psi | 85% | 2740 fps | 99.8% |
| Somchem S361 | <<locked>> | 86% | 52,083 psi | 86% | 2677 fps | 98.8% |
| Somchem S365 | <<locked>> | 84% | 51,590 psi | 85% | 2690 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 52,968 psi | 87% | 2720 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 52,750 psi | 87% | 2680 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 52,547 psi | 86% | 2703 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 98% | 54,665 psi | 90% | 2769 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 82% | 51,909 psi | 85% | 2687 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,969 psi | 90% | 2766 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,462 psi | 89% | 2844 fps | 99.3% |
| Vihtavuori N565 | <<locked>> | 96% | 54,404 psi | 89% | 2828 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 98% | 51,213 psi | 84% | 2831 fps | 98.3% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 52,025 psi | 85% | 2884 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 51,866 psi | 85% | 2638 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,143 psi | 89% | 2759 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 54,578 psi | 90% | 2874 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 52,489 psi | 86% | 2713 fps | 99.8% |
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% | 36,898 psi | 61% | 2428 fps | 99.2% |
| Accurate 4350 | <<locked>> | 80% | 49,153 psi | 81% | 2654 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 39,987 psi | 66% | 2592 fps | 97.2% |
| Accurate MAGPRO | <<locked>> | 80% | 37,739 psi | 62% | 2533 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 40,857 psi | 67% | 2546 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 80% | 36,477 psi | 60% | 2484 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 88% | 35,201 psi | 58% | 2454 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 84% | 28,123 psi | 46% | 2313 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,278 psi | 68% | 2549 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,891 psi | 77% | 2654 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,901 psi | 67% | 2543 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,767 psi | 60% | 2493 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,505 psi | 58% | 2451 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,777 psi | 51% | 2379 fps | 98.5% |
| Alliant Reloder-26 | 59.4 gr | 80% | 39,044 psi | 64% | 2595 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 45,310 psi | 74% | 2746 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 46,499 psi | 76% | 2628 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 34,243 psi | 56% | 2434 fps | 96.4% |
| Bofors RP30 | <<locked>> | 86% | 34,418 psi | 56% | 2474 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 36,767 psi | 60% | 2493 fps | 97.4% |
| Bofors RP7 | <<locked>> | 80% | 51,082 psi | 84% | 2648 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 33,620 psi | 55% | 2418 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 50,488 psi | 83% | 2703 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 38,798 psi | 64% | 2487 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 38,232 psi | 63% | 2474 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,367 psi | 73% | 2543 fps | 100% |
| Hodgdon Retumbo | 55.6 gr | 80% | 30,037 psi | 49% | 2398 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 50,444 psi | 83% | 2736 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,963 psi | 46% | 1529 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,673 psi | 77% | 2595 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 46,528 psi | 76% | 2598 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,538 psi | 67% | 2487 fps | 96.6% |
| IMR 7828 SSC | <<locked>> | 80% | 35,128 psi | 58% | 2461 fps | 95.3% |
| IMR 8133 Enduron | <<locked>> | 94% | 34,896 psi | 57% | 2507 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 50,198 psi | 82% | 2625 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,544 psi | 80% | 2621 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 31,865 psi | 52% | 2313 fps | 98.1% |
| Norma 204 | <<locked>> | 80% | 46,876 psi | 77% | 2638 fps | 99.2% |
| Norma 217 | <<locked>> | 88% | 28,790 psi | 47% | 2362 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 38,566 psi | 63% | 2562 fps | 99% |
| Norma URP | <<locked>> | 80% | 47,964 psi | 79% | 2638 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 34,664 psi | 57% | 2467 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 46,789 psi | 77% | 2644 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 30,864 psi | 51% | 2356 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,718 psi | 47% | 1565 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,950 psi | 80% | 2674 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,195 psi | 77% | 2697 fps | 100% |
| ReloadSwiss RS 76 | 59.5 gr | 80% | 28,964 psi | 48% | 2369 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 37,304 psi | 61% | 2572 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 42,119 psi | 69% | 2523 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 80% | 40,350 psi | 66% | 2533 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 80% | 51,082 psi | 84% | 2648 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,198 psi | 82% | 2625 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,544 psi | 80% | 2621 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,023 psi | 80% | 2579 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,001 psi | 66% | 2526 fps | 98.2% |
| Somchem S361 | <<locked>> | 80% | 42,786 psi | 70% | 2516 fps | 97% |
| Somchem S365 | <<locked>> | 80% | 45,208 psi | 74% | 2595 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,843 psi | 67% | 2510 fps | 99% |
| Vihtavuori N160 | <<locked>> | 80% | 49,414 psi | 81% | 2631 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,476 psi | 58% | 2395 fps | 97.4% |
| Vihtavuori N170 | <<locked>> | 96% | 50,952 psi | 84% | 2710 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 48,675 psi | 80% | 2635 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,755 psi | 65% | 2520 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,624 psi | 63% | 2549 fps | 96.1% |
| Vihtavuori N565 | <<locked>> | 84% | 36,347 psi | 60% | 2490 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 92% | 41,582 psi | 68% | 2651 fps | 96% |
| Vihtavuori N570 | <<locked>> | 98% | 48,544 psi | 80% | 2822 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,428 psi | 80% | 2589 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,734 psi | 83% | 2707 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 31,850 psi | 52% | 2490 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,217 psi | 61% | 2438 fps | 97.4% |
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 72 powders for 7 mm Blaser Mag. loaded with the .284 | 180gr | Sierra MatchKing. Hodgdon Retumbo delivers the highest muzzle velocity at 2,933 fps; across all powders the maximum-charge window runs from 1,713 fps to 2,933 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 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 180.0 gr projectile in 0.284" calls for a 1:10.0 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, Alliant Reloder-26 rank at the top here: for 7 mm Blaser Mag. with the .284 | 180gr | Sierra MatchKing 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.