Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 174gr | Prvi Partizan PSP 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 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% | 54,491 psi | 89% | 2772 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 51,895 psi | 85% | 2743 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 53,055 psi | 87% | 2871 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 88% | 52,649 psi | 86% | 2805 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 54,128 psi | 89% | 2871 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,895 psi | 85% | 2831 fps | 99.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,572 psi | 76% | 2799 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 53,069 psi | 87% | 2805 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 53,069 psi | 87% | 2805 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 84% | 52,982 psi | 87% | 2799 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 52,475 psi | 86% | 2795 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,360 psi | 89% | 2864 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 52,243 psi | 86% | 2782 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 54,955 psi | 90% | 2894 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 52,054 psi | 85% | 2864 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 52,272 psi | 86% | 2776 fps | 96.8% |
| Bofors RP15 | <<locked>> | 94% | 53,577 psi | 88% | 2854 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,694 psi | 90% | 2900 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 54,360 psi | 89% | 2864 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 54,143 psi | 89% | 2746 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 53,621 psi | 88% | 2858 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 53,403 psi | 88% | 2795 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 53,998 psi | 89% | 2808 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 90% | 52,997 psi | 87% | 2792 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 53,316 psi | 88% | 2723 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,027 psi | 89% | 2976 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 53,650 psi | 88% | 2835 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,333 psi | 61% | 1745 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 52,301 psi | 86% | 2733 fps | 99.9% |
| IMR 4831 | <<locked>> | 84% | 52,533 psi | 86% | 2740 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,868 psi | 90% | 2785 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 92% | 52,286 psi | 86% | 2851 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,148 psi | 69% | 2707 fps | 97.8% |
| Lovex S065 | <<locked>> | 82% | 52,881 psi | 87% | 2713 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,462 psi | 89% | 2762 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 52,214 psi | 86% | 2740 fps | 100% |
| Norma 204 | <<locked>> | 84% | 53,142 psi | 87% | 2789 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 42,264 psi | 69% | 2733 fps | 99.5% |
| Norma MRP | <<locked>> | 90% | 54,085 psi | 89% | 2884 fps | 100% |
| Norma URP | <<locked>> | 84% | 53,969 psi | 89% | 2779 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 52,620 psi | 86% | 2867 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 52,895 psi | 87% | 2789 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 54,868 psi | 90% | 2858 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,087 psi | 63% | 1785 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 51,938 psi | 85% | 2766 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 53,867 psi | 88% | 2848 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,346 psi | 89% | 2966 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,505 psi | 88% | 2927 fps | 98.9% |
| Rottweil R 904 | <<locked>> | 88% | 53,838 psi | 88% | 2776 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 88% | 51,924 psi | 85% | 2785 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 82% | 54,143 psi | 89% | 2746 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 52,881 psi | 87% | 2713 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,462 psi | 89% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 51,924 psi | 85% | 2671 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,042 psi | 90% | 2835 fps | 99.9% |
| Somchem S361 | <<locked>> | 86% | 51,677 psi | 85% | 2713 fps | 98.5% |
| Somchem S365 | <<locked>> | 86% | 54,549 psi | 90% | 2779 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 52,301 psi | 86% | 2756 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 82% | 52,098 psi | 86% | 2717 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 52,040 psi | 85% | 2743 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 54,737 psi | 90% | 2776 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,302 psi | 89% | 2808 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 53,853 psi | 88% | 2881 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 96% | 53,853 psi | 88% | 2867 fps | 99.3% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,375 psi | 89% | 2927 fps | 98.6% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 51,561 psi | 85% | 2920 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,868 psi | 90% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 53,621 psi | 88% | 2799 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 53,650 psi | 88% | 2913 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 51,967 psi | 85% | 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% | 36,390 psi | 60% | 2457 fps | 99% |
| Accurate 4350 | <<locked>> | 80% | 48,515 psi | 80% | 2690 fps | 100% |
| Accurate MAGPRO | 61.3 gr | 82% | 40,001 psi | 66% | 2625 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 40,335 psi | 66% | 2579 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 80% | 36,172 psi | 59% | 2516 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 88% | 34,954 psi | 57% | 2487 fps | 95% |
| ADI AR 2225 | <<locked>> | 86% | 29,602 psi | 49% | 2395 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,756 psi | 67% | 2579 fps | 98% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,756 psi | 67% | 2579 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,586 psi | 76% | 2697 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,393 psi | 66% | 2575 fps | 97.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,405 psi | 60% | 2526 fps | 96.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,027 psi | 57% | 2484 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,342 psi | 50% | 2405 fps | 98.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,667 psi | 63% | 2631 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 46,137 psi | 76% | 2661 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 33,794 psi | 55% | 2461 fps | 95.8% |
| Bofors RP30 | <<locked>> | 86% | 34,127 psi | 56% | 2507 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 36,405 psi | 60% | 2526 fps | 96.9% |
| Bofors RP7 | <<locked>> | 80% | 50,807 psi | 83% | 2690 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 33,257 psi | 55% | 2444 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 50,053 psi | 82% | 2743 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 38,464 psi | 63% | 2520 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 37,913 psi | 62% | 2507 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,874 psi | 72% | 2579 fps | 100% |
| Hodgdon Retumbo | 58 gr | 82% | 31,763 psi | 52% | 2487 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 50,009 psi | 82% | 2776 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,065 psi | 46% | 1562 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,122 psi | 76% | 2628 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 46,151 psi | 76% | 2641 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,089 psi | 66% | 2520 fps | 96.1% |
| IMR 7828 SSC | <<locked>> | 82% | 37,217 psi | 61% | 2552 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 94% | 34,461 psi | 57% | 2533 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 49,690 psi | 82% | 2664 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,022 psi | 79% | 2661 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 31,473 psi | 52% | 2343 fps | 97.7% |
| Norma 204 | <<locked>> | 80% | 46,456 psi | 76% | 2674 fps | 98.9% |
| Norma 217 | <<locked>> | 90% | 30,313 psi | 50% | 2444 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 38,101 psi | 63% | 2592 fps | 98.6% |
| Norma URP | <<locked>> | 80% | 47,413 psi | 78% | 2677 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 34,272 psi | 56% | 2497 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 46,354 psi | 76% | 2680 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 30,618 psi | 50% | 2385 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,601 psi | 47% | 1598 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,472 psi | 80% | 2713 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,659 psi | 77% | 2736 fps | 100% |
| ReloadSwiss RS 76 | 60.5 gr | 80% | 28,601 psi | 47% | 2392 fps | 95.1% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 39,653 psi | 65% | 2667 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 41,640 psi | 68% | 2556 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 80% | 39,813 psi | 65% | 2562 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 80% | 50,807 psi | 83% | 2690 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,690 psi | 82% | 2664 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,022 psi | 79% | 2661 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,704 psi | 80% | 2618 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,523 psi | 65% | 2559 fps | 97.8% |
| Somchem S361 | <<locked>> | 80% | 42,351 psi | 70% | 2549 fps | 96.6% |
| Somchem S365 | <<locked>> | 80% | 44,585 psi | 73% | 2631 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,466 psi | 66% | 2546 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 80% | 48,820 psi | 80% | 2667 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,983 psi | 57% | 2425 fps | 97% |
| Vihtavuori N550 | <<locked>> | 80% | 48,283 psi | 79% | 2677 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,233 psi | 64% | 2556 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,189 psi | 63% | 2582 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 84% | 36,042 psi | 59% | 2523 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 92% | 40,973 psi | 67% | 2677 fps | 95.4% |
| Vihtavuori N570 | <<locked>> | 98% | 47,935 psi | 79% | 2854 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,892 psi | 79% | 2628 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,299 psi | 83% | 2746 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 31,314 psi | 51% | 2520 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,883 psi | 61% | 2474 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 | 174gr | Prvi Partizan PSP BT. Hodgdon Retumbo delivers the highest muzzle velocity at 2,976 fps; across all powders the maximum-charge window runs from 1,745 fps to 2,976 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 174.0 gr projectile in 0.284" calls for a 1:11.0 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 | 174gr | Prvi Partizan PSP 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.