Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 171gr | Barnes Match Burner BT 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 Winchester StaBALL HD.
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>> | 92% | 52,924 psi | 87% | 2772 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 54,099 psi | 89% | 2795 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 55,071 psi | 90% | 2923 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 90% | 54,723 psi | 90% | 2854 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 92% | 52,678 psi | 86% | 2864 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,546 psi | 83% | 2825 fps | 99.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,049 psi | 74% | 2789 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,911 psi | 90% | 2848 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 54,462 psi | 89% | 2848 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 52,823 psi | 87% | 2861 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 53,911 psi | 89% | 2828 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 53,316 psi | 88% | 2894 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 54,244 psi | 89% | 2917 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,302 psi | 89% | 2825 fps | 97% |
| Bofors RP15 | <<locked>> | 94% | 51,808 psi | 85% | 2844 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,837 psi | 87% | 2894 fps | 99.5% |
| Bofors RP5 | <<locked>> | 92% | 52,823 psi | 87% | 2861 fps | 99.7% |
| Bofors RP7 | <<locked>> | 82% | 52,953 psi | 87% | 2746 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 98% | 51,953 psi | 85% | 2851 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 82% | 52,141 psi | 86% | 2795 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 54,578 psi | 90% | 2805 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 90% | 52,591 psi | 86% | 2802 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 51,605 psi | 85% | 2785 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 51,764 psi | 85% | 2723 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 52,156 psi | 86% | 2963 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 52,127 psi | 86% | 2828 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,231 psi | 61% | 1755 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 54,505 psi | 89% | 2785 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,172 psi | 89% | 2762 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 54,447 psi | 89% | 2789 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 53,548 psi | 88% | 2785 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 94% | 54,085 psi | 89% | 2897 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 40,611 psi | 67% | 2697 fps | 97.1% |
| Lovex S065 | <<locked>> | 84% | 54,868 psi | 90% | 2762 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 53,258 psi | 87% | 2762 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 53,983 psi | 89% | 2785 fps | 100% |
| Norma 204 | <<locked>> | 84% | 51,706 psi | 85% | 2782 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 40,799 psi | 67% | 2723 fps | 99.1% |
| Norma MRP | <<locked>> | 90% | 52,475 psi | 86% | 2881 fps | 100% |
| Norma URP | <<locked>> | 84% | 52,692 psi | 87% | 2779 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,766 psi | 90% | 2920 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 86% | 54,810 psi | 90% | 2838 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 52,953 psi | 87% | 2851 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,971 psi | 62% | 1795 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 54,056 psi | 89% | 2822 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 52,228 psi | 86% | 2844 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 52,547 psi | 86% | 2959 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,387 psi | 84% | 2913 fps | 98.4% |
| Rottweil R 904 | <<locked>> | 88% | 52,475 psi | 86% | 2772 fps | 99% |
| Rottweil R 905 | <<locked>> | 90% | 53,911 psi | 89% | 2835 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 52,953 psi | 87% | 2746 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,868 psi | 90% | 2762 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 53,258 psi | 87% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 53,983 psi | 89% | 2717 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 53,490 psi | 88% | 2831 fps | 99.7% |
| Somchem S361 | <<locked>> | 88% | 53,896 psi | 88% | 2766 fps | 98.7% |
| Somchem S365 | <<locked>> | 86% | 53,142 psi | 87% | 2782 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,491 psi | 89% | 2808 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 54,984 psi | 90% | 2703 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 54,244 psi | 89% | 2769 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 53,795 psi | 88% | 2789 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 53,548 psi | 88% | 2779 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 52,649 psi | 86% | 2805 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 52,286 psi | 86% | 2877 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 96% | 52,069 psi | 85% | 2858 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,504 psi | 86% | 2917 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 53,461 psi | 88% | 2726 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 52,388 psi | 86% | 2799 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 51,576 psi | 85% | 2910 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 54,114 psi | 89% | 2802 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% | 35,317 psi | 58% | 2454 fps | 98.6% |
| Accurate 4350 | <<locked>> | 80% | 47,181 psi | 77% | 2690 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 41,582 psi | 68% | 2677 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 39,276 psi | 64% | 2575 fps | 97.3% |
| ADI AR 2213 | <<locked>> | 82% | 37,478 psi | 62% | 2566 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 90% | 36,260 psi | 60% | 2533 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 88% | 30,589 psi | 50% | 2438 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,266 psi | 74% | 2697 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,320 psi | 65% | 2569 fps | 97.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,143 psi | 58% | 2516 fps | 96.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,910 psi | 56% | 2477 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,472 psi | 48% | 2395 fps | 97.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,217 psi | 61% | 2621 fps | 99.8% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 48,080 psi | 79% | 2713 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 32,764 psi | 54% | 2454 fps | 95.1% |
| Bofors RP30 | <<locked>> | 88% | 35,259 psi | 58% | 2549 fps | 95.4% |
| Bofors RP5 | <<locked>> | 80% | 35,143 psi | 58% | 2516 fps | 96.2% |
| Bofors RP7 | <<locked>> | 80% | 49,676 psi | 82% | 2690 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 86% | 34,650 psi | 57% | 2497 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 48,834 psi | 80% | 2743 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 51,198 psi | 84% | 2753 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 82% | 40,059 psi | 66% | 2572 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 82% | 39,291 psi | 65% | 2556 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,656 psi | 70% | 2579 fps | 100% |
| Hodgdon Retumbo | 58.6 gr | 84% | 32,808 psi | 54% | 2533 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 48,501 psi | 80% | 2769 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,876 psi | 46% | 1565 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,049 psi | 74% | 2628 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,082 psi | 84% | 2717 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 44,962 psi | 74% | 2638 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 39,131 psi | 64% | 2516 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 82% | 36,216 psi | 59% | 2546 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 96% | 35,636 psi | 59% | 2579 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 48,559 psi | 80% | 2664 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 46,891 psi | 77% | 2657 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 30,487 psi | 50% | 2336 fps | 97.1% |
| Norma 204 | <<locked>> | 80% | 45,107 psi | 74% | 2667 fps | 98.5% |
| Norma 217 | <<locked>> | 92% | 31,270 psi | 51% | 2490 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 36,767 psi | 60% | 2582 fps | 98.1% |
| Norma URP | <<locked>> | 80% | 46,180 psi | 76% | 2677 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 35,679 psi | 59% | 2549 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 44,976 psi | 74% | 2677 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 82% | 31,836 psi | 52% | 2434 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,601 psi | 47% | 1608 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,181 psi | 77% | 2713 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,397 psi | 75% | 2733 fps | 100% |
| ReloadSwiss RS 76 | 61.2 gr | 82% | 29,675 psi | 49% | 2441 fps | 95.4% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 41,089 psi | 67% | 2717 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 40,611 psi | 67% | 2552 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 80% | 38,711 psi | 64% | 2556 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 80% | 49,676 psi | 82% | 2690 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,559 psi | 80% | 2664 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 46,891 psi | 77% | 2657 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,645 psi | 78% | 2618 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,377 psi | 63% | 2552 fps | 97.3% |
| Somchem S361 | <<locked>> | 80% | 41,437 psi | 68% | 2546 fps | 96% |
| Somchem S365 | <<locked>> | 80% | 43,265 psi | 71% | 2631 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,233 psi | 64% | 2539 fps | 98.2% |
| Vihtavuori N150 | <<locked>> | 80% | 51,532 psi | 85% | 2657 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,587 psi | 78% | 2667 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,011 psi | 56% | 2418 fps | 96.4% |
| Vihtavuori N550 | <<locked>> | 80% | 46,905 psi | 77% | 2674 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,014 psi | 62% | 2552 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 39,697 psi | 65% | 2635 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 86% | 37,202 psi | 61% | 2569 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 94% | 42,409 psi | 70% | 2730 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,804 psi | 77% | 2631 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,834 psi | 80% | 2743 fps | 99.9% |
| Winchester StaBALL HD | 57.3 gr | 80% | 30,124 psi | 49% | 2507 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,882 psi | 59% | 2467 fps | 96.3% |
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 | 171gr | Barnes Match Burner BT. Hodgdon Retumbo delivers the highest muzzle velocity at 2,963 fps; across all powders the maximum-charge window runs from 1,755 fps to 2,963 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. 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, Winchester StaBALL HD rank at the top here: for 7 mm Blaser Mag. with the .284 | 171gr | Barnes Match Burner BT 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.