Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 173gr | Sellier & Bellot SPCE bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 76, Hodgdon Retumbo 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% | 54,926 psi | 90% | 2789 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 52,431 psi | 86% | 2759 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 53,403 psi | 88% | 2887 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 88% | 53,084 psi | 87% | 2818 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 54,505 psi | 89% | 2884 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,431 psi | 86% | 2851 fps | 99.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,818 psi | 77% | 2815 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 53,272 psi | 87% | 2818 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 84% | 53,301 psi | 88% | 2812 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 52,663 psi | 86% | 2808 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,752 psi | 90% | 2881 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 52,446 psi | 86% | 2795 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 51,764 psi | 85% | 2858 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 52,518 psi | 86% | 2881 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 48,834 psi | 80% | 2864 fps | 96.1% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 52,475 psi | 86% | 2789 fps | 96.9% |
| Bofors RP15 | <<locked>> | 94% | 53,969 psi | 89% | 2871 fps | 99.8% |
| Bofors RP30 | <<locked>> | 98% | 51,517 psi | 85% | 2861 fps | 99.4% |
| Bofors RP5 | <<locked>> | 92% | 54,752 psi | 90% | 2881 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 54,404 psi | 89% | 2759 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 53,882 psi | 88% | 2874 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 53,882 psi | 88% | 2815 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 54,389 psi | 89% | 2822 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 90% | 53,127 psi | 87% | 2802 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 53,577 psi | 88% | 2736 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,346 psi | 89% | 2989 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,085 psi | 89% | 2851 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,246 psi | 61% | 1752 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 52,750 psi | 87% | 2749 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 52,808 psi | 87% | 2753 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 51,967 psi | 85% | 2749 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 92% | 52,634 psi | 86% | 2864 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,453 psi | 70% | 2723 fps | 97.9% |
| Lovex S065 | <<locked>> | 82% | 53,142 psi | 87% | 2726 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,679 psi | 90% | 2776 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 52,634 psi | 86% | 2756 fps | 100% |
| Norma 204 | <<locked>> | 84% | 53,345 psi | 88% | 2802 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 42,786 psi | 70% | 2753 fps | 99.5% |
| Norma MRP | <<locked>> | 90% | 54,476 psi | 89% | 2897 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,259 psi | 89% | 2792 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 53,026 psi | 87% | 2884 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 53,084 psi | 87% | 2802 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 51,445 psi | 84% | 2818 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,189 psi | 63% | 1798 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 52,170 psi | 86% | 2779 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,331 psi | 89% | 2864 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,839 psi | 90% | 2986 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 54,056 psi | 89% | 2943 fps | 99% |
| Rottweil R 904 | <<locked>> | 88% | 54,056 psi | 89% | 2789 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 88% | 52,141 psi | 86% | 2799 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 82% | 54,404 psi | 89% | 2759 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 53,142 psi | 87% | 2726 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,679 psi | 90% | 2776 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 52,185 psi | 86% | 2684 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 51,750 psi | 85% | 2795 fps | 99.7% |
| Somchem S361 | <<locked>> | 86% | 51,982 psi | 85% | 2730 fps | 98.6% |
| Somchem S365 | <<locked>> | 86% | 55,085 psi | 90% | 2795 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 52,721 psi | 87% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 52,562 psi | 86% | 2736 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 52,402 psi | 86% | 2759 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 82% | 51,692 psi | 85% | 2740 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,737 psi | 90% | 2822 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,230 psi | 89% | 2897 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 96% | 54,447 psi | 89% | 2884 fps | 99.3% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,853 psi | 90% | 2943 fps | 98.7% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 51,808 psi | 85% | 2933 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 51,692 psi | 85% | 2690 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 53,882 psi | 88% | 2815 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 54,360 psi | 89% | 2933 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 52,344 psi | 86% | 2766 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% | 36,637 psi | 60% | 2470 fps | 99% |
| Accurate 4350 | <<locked>> | 80% | 48,820 psi | 80% | 2707 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 40,219 psi | 66% | 2638 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 40,596 psi | 67% | 2592 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 80% | 36,376 psi | 60% | 2530 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 88% | 35,099 psi | 58% | 2497 fps | 95% |
| ADI AR 2225 | <<locked>> | 86% | 29,747 psi | 49% | 2408 fps | 96% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,002 psi | 67% | 2595 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,891 psi | 77% | 2713 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,654 psi | 67% | 2589 fps | 98% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,637 psi | 60% | 2539 fps | 97% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,302 psi | 58% | 2497 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,560 psi | 50% | 2418 fps | 98.1% |
| Alliant Reloder-26 | 61.1 gr | 80% | 38,914 psi | 64% | 2641 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 45,295 psi | 74% | 2795 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 46,398 psi | 76% | 2677 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 34,026 psi | 56% | 2477 fps | 95.9% |
| Bofors RP30 | <<locked>> | 86% | 34,330 psi | 56% | 2516 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 36,637 psi | 60% | 2539 fps | 97% |
| Bofors RP7 | <<locked>> | 80% | 51,097 psi | 84% | 2707 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 33,591 psi | 55% | 2464 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 50,357 psi | 83% | 2756 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 38,682 psi | 64% | 2533 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 38,145 psi | 63% | 2520 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,164 psi | 73% | 2595 fps | 100% |
| Hodgdon Retumbo | 58.6 gr | 82% | 31,952 psi | 52% | 2500 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 50,198 psi | 82% | 2789 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,079 psi | 46% | 1568 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,383 psi | 76% | 2641 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 46,441 psi | 76% | 2654 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,321 psi | 66% | 2533 fps | 96.2% |
| IMR 7828 SSC | <<locked>> | 82% | 37,420 psi | 61% | 2566 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 94% | 34,780 psi | 57% | 2549 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 49,995 psi | 82% | 2677 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,298 psi | 79% | 2674 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 31,763 psi | 52% | 2356 fps | 97.7% |
| Norma 204 | <<locked>> | 80% | 46,702 psi | 77% | 2690 fps | 99% |
| Norma 217 | <<locked>> | 90% | 30,647 psi | 50% | 2461 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 38,334 psi | 63% | 2608 fps | 98.7% |
| Norma URP | <<locked>> | 80% | 47,718 psi | 78% | 2690 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 34,505 psi | 57% | 2510 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 46,586 psi | 76% | 2697 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 30,821 psi | 51% | 2398 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,616 psi | 47% | 1604 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,965 psi | 80% | 2730 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,876 psi | 77% | 2746 fps | 100% |
| ReloadSwiss RS 76 | 61.2 gr | 80% | 28,892 psi | 47% | 2408 fps | 95.3% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 39,900 psi | 66% | 2680 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 41,872 psi | 69% | 2572 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 80% | 40,089 psi | 66% | 2579 fps | 98% |
| Rottweil R 907 | <<locked>> | 80% | 51,097 psi | 84% | 2707 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,995 psi | 82% | 2677 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,298 psi | 79% | 2674 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,950 psi | 80% | 2631 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,755 psi | 65% | 2572 fps | 97.9% |
| Somchem S361 | <<locked>> | 80% | 42,554 psi | 70% | 2562 fps | 96.6% |
| Somchem S365 | <<locked>> | 80% | 44,904 psi | 74% | 2648 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,756 psi | 67% | 2562 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 80% | 49,095 psi | 81% | 2680 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,215 psi | 58% | 2438 fps | 97% |
| Vihtavuori N550 | <<locked>> | 80% | 48,530 psi | 80% | 2690 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,537 psi | 65% | 2569 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,406 psi | 63% | 2595 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 84% | 36,245 psi | 60% | 2536 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 92% | 41,437 psi | 68% | 2700 fps | 95.6% |
| Vihtavuori N570 | <<locked>> | 98% | 48,472 psi | 80% | 2874 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,327 psi | 79% | 2644 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,560 psi | 83% | 2762 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 31,633 psi | 52% | 2533 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,086 psi | 61% | 2484 fps | 97% |
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 | 173gr | Sellier & Bellot SPCE. Hodgdon Retumbo delivers the highest muzzle velocity at 2,989 fps; across all powders the maximum-charge window runs from 1,752 fps to 2,989 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 173.0 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, 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. ReloadSwiss RS 76, Hodgdon Retumbo, Alliant Reloder-26 rank at the top here: for 7 mm Blaser Mag. with the .284 | 173gr | Sellier & Bellot SPCE 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.