Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 175gr | Speer TBBC 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, 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% | 53,809 psi | 88% | 2753 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 51,547 psi | 85% | 2726 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 52,402 psi | 86% | 2851 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 88% | 52,185 psi | 86% | 2785 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 53,476 psi | 88% | 2848 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,372 psi | 84% | 2812 fps | 99.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,093 psi | 76% | 2782 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 52,620 psi | 86% | 2785 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 52,620 psi | 86% | 2785 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 84% | 52,634 psi | 86% | 2782 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 52,025 psi | 85% | 2779 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 53,693 psi | 88% | 2844 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,056 psi | 90% | 2812 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 54,302 psi | 89% | 2874 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 51,343 psi | 84% | 2844 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,822 psi | 85% | 2756 fps | 96.7% |
| Bofors RP15 | <<locked>> | 94% | 52,910 psi | 87% | 2831 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,114 psi | 89% | 2884 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 53,693 psi | 88% | 2844 fps | 99.8% |
| Bofors RP7 | <<locked>> | 82% | 53,606 psi | 88% | 2726 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 53,084 psi | 87% | 2841 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 53,113 psi | 87% | 2782 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 53,359 psi | 88% | 2785 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 90% | 52,359 psi | 86% | 2769 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 52,736 psi | 87% | 2707 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 53,417 psi | 88% | 2953 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 53,185 psi | 87% | 2815 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,318 psi | 61% | 1736 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 52,083 psi | 86% | 2720 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,027 psi | 90% | 2746 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 51,996 psi | 85% | 2723 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,491 psi | 89% | 2772 fps | 99% |
| IMR 7828 SSC | <<locked>> | 92% | 51,590 psi | 85% | 2828 fps | 99.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,611 psi | 68% | 2690 fps | 97.7% |
| Lovex S065 | <<locked>> | 82% | 52,591 psi | 86% | 2700 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,186 psi | 89% | 2746 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 55,100 psi | 90% | 2772 fps | 100% |
| Norma 204 | <<locked>> | 84% | 52,692 psi | 87% | 2769 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 41,713 psi | 68% | 2713 fps | 99.4% |
| Norma MRP | <<locked>> | 90% | 53,635 psi | 88% | 2867 fps | 100% |
| Norma URP | <<locked>> | 84% | 53,650 psi | 88% | 2762 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 52,214 psi | 86% | 2848 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 52,417 psi | 86% | 2772 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 54,288 psi | 89% | 2841 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,072 psi | 63% | 1775 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 51,401 psi | 84% | 2749 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 53,359 psi | 88% | 2831 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 53,867 psi | 88% | 2949 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,808 psi | 87% | 2907 fps | 98.8% |
| Rottweil R 904 | <<locked>> | 88% | 53,432 psi | 88% | 2756 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 90% | 55,013 psi | 90% | 2822 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 53,606 psi | 88% | 2726 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 52,591 psi | 86% | 2700 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,186 psi | 89% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 54,882 psi | 90% | 2700 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 54,578 psi | 90% | 2818 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 54,621 psi | 90% | 2749 fps | 98.9% |
| Somchem S365 | <<locked>> | 86% | 53,983 psi | 89% | 2762 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 51,880 psi | 85% | 2740 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 82% | 51,764 psi | 85% | 2703 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 54,897 psi | 90% | 2776 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 54,505 psi | 89% | 2762 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 53,737 psi | 88% | 2789 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 53,447 psi | 88% | 2864 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 96% | 53,272 psi | 87% | 2848 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,838 psi | 88% | 2907 fps | 98.5% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 50,792 psi | 83% | 2897 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,447 psi | 89% | 2710 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 53,113 psi | 87% | 2782 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 52,881 psi | 87% | 2894 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 51,605 psi | 85% | 2736 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% | 36,085 psi | 59% | 2441 fps | 98.9% |
| Accurate 4350 | <<locked>> | 80% | 48,124 psi | 79% | 2674 fps | 100% |
| Accurate MAGPRO | 60.5 gr | 82% | 39,581 psi | 65% | 2605 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 80% | 40,045 psi | 66% | 2562 fps | 97.8% |
| ADI AR 2213 | <<locked>> | 80% | 35,737 psi | 59% | 2497 fps | 95% |
| ADI AR 2217 | <<locked>> | 90% | 36,985 psi | 61% | 2526 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 86% | 29,312 psi | 48% | 2379 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,437 psi | 66% | 2566 fps | 97.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,437 psi | 66% | 2566 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,166 psi | 76% | 2680 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,118 psi | 66% | 2559 fps | 97.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,926 psi | 59% | 2507 fps | 96.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,679 psi | 57% | 2467 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,095 psi | 49% | 2392 fps | 98% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,174 psi | 63% | 2612 fps | 99.9% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 45,876 psi | 75% | 2648 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 33,489 psi | 55% | 2448 fps | 95.7% |
| Bofors RP30 | <<locked>> | 86% | 33,736 psi | 55% | 2487 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 35,926 psi | 59% | 2507 fps | 96.8% |
| Bofors RP7 | <<locked>> | 80% | 50,473 psi | 83% | 2674 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 86% | 35,360 psi | 58% | 2490 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 49,777 psi | 82% | 2726 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 38,174 psi | 63% | 2503 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 37,463 psi | 62% | 2487 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,468 psi | 71% | 2562 fps | 100% |
| Hodgdon Retumbo | 57.2 gr | 82% | 31,386 psi | 52% | 2467 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 49,284 psi | 81% | 2753 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,949 psi | 46% | 1549 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,847 psi | 75% | 2615 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,648 psi | 85% | 2694 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 45,600 psi | 75% | 2618 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 39,842 psi | 65% | 2503 fps | 96% |
| IMR 7828 SSC | <<locked>> | 82% | 36,767 psi | 60% | 2533 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 94% | 34,156 psi | 56% | 2516 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 49,385 psi | 81% | 2648 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,703 psi | 78% | 2644 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 31,169 psi | 51% | 2326 fps | 97.6% |
| Norma 204 | <<locked>> | 80% | 45,934 psi | 75% | 2657 fps | 98.8% |
| Norma 217 | <<locked>> | 90% | 29,994 psi | 49% | 2428 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 37,637 psi | 62% | 2572 fps | 98.5% |
| Norma URP | <<locked>> | 80% | 47,065 psi | 77% | 2661 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 36,477 psi | 60% | 2543 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 45,832 psi | 75% | 2664 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 30,284 psi | 50% | 2365 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,674 psi | 47% | 1588 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,182 psi | 79% | 2697 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,151 psi | 76% | 2717 fps | 100% |
| ReloadSwiss RS 76 | 61.2 gr | 82% | 30,327 psi | 50% | 2441 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 39,001 psi | 64% | 2644 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 41,336 psi | 68% | 2539 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 80% | 39,523 psi | 65% | 2549 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 80% | 50,473 psi | 83% | 2674 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,385 psi | 81% | 2648 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,703 psi | 78% | 2644 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,196 psi | 79% | 2598 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,189 psi | 64% | 2543 fps | 97.7% |
| Somchem S361 | <<locked>> | 80% | 41,989 psi | 69% | 2530 fps | 96.5% |
| Somchem S365 | <<locked>> | 80% | 44,237 psi | 73% | 2618 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,987 psi | 66% | 2526 fps | 98.6% |
| Vihtavuori N160 | <<locked>> | 80% | 48,486 psi | 80% | 2651 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,722 psi | 57% | 2408 fps | 96.9% |
| Vihtavuori N550 | <<locked>> | 80% | 47,790 psi | 78% | 2657 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,885 psi | 64% | 2539 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 37,768 psi | 62% | 2562 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 86% | 38,072 psi | 63% | 2562 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 92% | 40,640 psi | 67% | 2664 fps | 95.3% |
| Vihtavuori N570 | <<locked>> | 98% | 47,427 psi | 78% | 2835 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,471 psi | 78% | 2612 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,777 psi | 82% | 2726 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,821 psi | 51% | 2500 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,608 psi | 60% | 2457 fps | 96.9% |
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 71 powders for 7 mm Blaser Mag. loaded with the .284 | 175gr | Speer TBBC. Hodgdon Retumbo delivers the highest muzzle velocity at 2,953 fps; across all powders the maximum-charge window runs from 1,736 fps to 2,953 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 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, 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 | 175gr | Speer TBBC 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.