Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 174gr | Prvi Partizan SP bullet and 69 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.
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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 55,100 psi | 90% | 2782 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 52,663 psi | 86% | 2756 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 53,664 psi | 88% | 2884 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 88% | 53,316 psi | 88% | 2818 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 92% | 54,752 psi | 90% | 2881 fps | 99.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,678 psi | 86% | 2848 fps | 99.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,253 psi | 78% | 2815 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 53,766 psi | 88% | 2812 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 53,098 psi | 87% | 2808 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,955 psi | 90% | 2877 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 52,924 psi | 87% | 2792 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 52,257 psi | 86% | 2858 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 52,750 psi | 87% | 2874 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 49,066 psi | 81% | 2861 fps | 96.2% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 52,634 psi | 86% | 2785 fps | 97% |
| Bofors RP15 | <<locked>> | 94% | 54,157 psi | 89% | 2864 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 52,011 psi | 85% | 2864 fps | 99.5% |
| Bofors RP5 | <<locked>> | 92% | 54,955 psi | 90% | 2877 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 54,563 psi | 90% | 2753 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 54,143 psi | 89% | 2871 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 54,070 psi | 89% | 2808 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 54,592 psi | 90% | 2818 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 90% | 53,577 psi | 88% | 2802 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 53,751 psi | 88% | 2733 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,563 psi | 90% | 2986 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,273 psi | 89% | 2844 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,434 psi | 61% | 1752 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 52,953 psi | 87% | 2746 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 52,968 psi | 87% | 2749 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 52,112 psi | 86% | 2746 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 92% | 52,895 psi | 87% | 2861 fps | 99.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,670 psi | 70% | 2723 fps | 98% |
| Lovex S065 | <<locked>> | 82% | 53,330 psi | 88% | 2723 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,114 psi | 90% | 2776 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 52,837 psi | 87% | 2753 fps | 100% |
| Norma 204 | <<locked>> | 84% | 53,780 psi | 88% | 2802 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 43,018 psi | 71% | 2749 fps | 99.6% |
| Norma MRP | <<locked>> | 90% | 54,984 psi | 90% | 2897 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,708 psi | 90% | 2792 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 53,548 psi | 88% | 2881 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 53,519 psi | 88% | 2799 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 51,721 psi | 85% | 2815 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,189 psi | 63% | 1791 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 52,634 psi | 86% | 2779 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,563 psi | 90% | 2861 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 51,314 psi | 84% | 2920 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 54,346 psi | 89% | 2940 fps | 99% |
| Rottweil R 904 | <<locked>> | 88% | 54,476 psi | 89% | 2789 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 88% | 52,605 psi | 86% | 2799 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 54,563 psi | 90% | 2753 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 53,330 psi | 88% | 2723 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,114 psi | 90% | 2776 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 52,286 psi | 86% | 2677 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 52,199 psi | 86% | 2792 fps | 99.8% |
| Somchem S361 | <<locked>> | 86% | 52,185 psi | 86% | 2726 fps | 98.7% |
| Somchem S365 | <<locked>> | 84% | 51,779 psi | 85% | 2743 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 52,924 psi | 87% | 2769 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 52,779 psi | 87% | 2730 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 52,591 psi | 86% | 2753 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 82% | 52,054 psi | 85% | 2740 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,969 psi | 90% | 2818 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,737 psi | 90% | 2897 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 96% | 54,723 psi | 90% | 2881 fps | 99.4% |
| Vihtavuori N568 | <<locked>> | 98% | 51,576 psi | 85% | 2884 fps | 98.2% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 52,315 psi | 86% | 2936 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 51,880 psi | 85% | 2687 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,317 psi | 89% | 2812 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 54,708 psi | 90% | 2927 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 52,576 psi | 86% | 2762 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% | 36,985 psi | 61% | 2470 fps | 99.1% |
| Accurate 4350 | <<locked>> | 80% | 49,269 psi | 81% | 2703 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 40,611 psi | 67% | 2638 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 40,973 psi | 67% | 2595 fps | 98.1% |
| ADI AR 2213 | <<locked>> | 80% | 36,521 psi | 60% | 2526 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 88% | 35,418 psi | 58% | 2500 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 84% | 28,079 psi | 46% | 2349 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,094 psi | 77% | 2707 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,988 psi | 67% | 2589 fps | 98.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,811 psi | 60% | 2539 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,462 psi | 58% | 2493 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,850 psi | 51% | 2421 fps | 98.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,131 psi | 64% | 2641 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 45,745 psi | 75% | 2799 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 46,731 psi | 77% | 2677 fps | 95.5% |
| Bofors RP15 | <<locked>> | 80% | 34,171 psi | 56% | 2474 fps | 96% |
| Bofors RP30 | <<locked>> | 86% | 34,519 psi | 57% | 2516 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 36,811 psi | 60% | 2539 fps | 97.1% |
| Bofors RP7 | <<locked>> | 80% | 51,227 psi | 84% | 2703 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 33,721 psi | 55% | 2461 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 50,517 psi | 83% | 2753 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 39,030 psi | 64% | 2533 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 38,290 psi | 63% | 2516 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,367 psi | 73% | 2589 fps | 100% |
| Hodgdon Retumbo | 58.6 gr | 82% | 32,111 psi | 53% | 2500 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 50,386 psi | 83% | 2785 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,079 psi | 46% | 1565 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,746 psi | 77% | 2641 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 46,615 psi | 77% | 2648 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,640 psi | 67% | 2533 fps | 96.4% |
| IMR 7828 SSC | <<locked>> | 80% | 35,186 psi | 58% | 2507 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 94% | 35,114 psi | 58% | 2552 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 50,140 psi | 82% | 2674 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,486 psi | 80% | 2671 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 31,894 psi | 52% | 2356 fps | 97.9% |
| Norma 204 | <<locked>> | 80% | 46,847 psi | 77% | 2684 fps | 99% |
| Norma 217 | <<locked>> | 88% | 28,834 psi | 47% | 2402 fps | 95% |
| Norma MRP | <<locked>> | 80% | 38,537 psi | 63% | 2605 fps | 98.8% |
| Norma URP | <<locked>> | 80% | 47,863 psi | 79% | 2687 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 34,664 psi | 57% | 2510 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 46,760 psi | 77% | 2690 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 30,951 psi | 51% | 2395 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,616 psi | 47% | 1601 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,139 psi | 81% | 2726 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,326 psi | 78% | 2749 fps | 100% |
| ReloadSwiss RS 76 | 61.2 gr | 80% | 29,037 psi | 48% | 2408 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 40,103 psi | 66% | 2680 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 42,221 psi | 69% | 2572 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 80% | 40,277 psi | 66% | 2575 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 80% | 51,227 psi | 84% | 2703 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,140 psi | 82% | 2674 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,486 psi | 80% | 2671 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,124 psi | 81% | 2628 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,943 psi | 66% | 2569 fps | 98% |
| Somchem S361 | <<locked>> | 80% | 42,873 psi | 70% | 2559 fps | 96.8% |
| Somchem S365 | <<locked>> | 80% | 45,339 psi | 74% | 2644 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,886 psi | 67% | 2559 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 80% | 49,487 psi | 81% | 2680 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,534 psi | 58% | 2438 fps | 97.2% |
| Vihtavuori N550 | <<locked>> | 80% | 48,718 psi | 80% | 2687 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,900 psi | 66% | 2569 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,595 psi | 63% | 2592 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 84% | 36,419 psi | 60% | 2533 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 92% | 41,669 psi | 68% | 2697 fps | 95.7% |
| Vihtavuori N570 | <<locked>> | 98% | 48,689 psi | 80% | 2871 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,515 psi | 80% | 2638 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,778 psi | 83% | 2756 fps | 100% |
| Winchester StaBALL HD | 58.7 gr | 80% | 31,836 psi | 52% | 2530 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,434 psi | 61% | 2487 fps | 97.2% |
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 69 powders for 7 mm Blaser Mag. loaded with the .284 | 174gr | Prvi Partizan SP. Hodgdon Retumbo delivers the highest muzzle velocity at 2,986 fps; across all powders the maximum-charge window runs from 1,752 fps to 2,986 fps. ADI AR 2217 gives the best case fill at 100 %, and 69 of the 69 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 1:11.5 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. Hodgdon Retumbo, ReloadSwiss RS 76, Winchester StaBALL HD rank at the top here: for 7 mm Blaser Mag. with the .284 | 174gr | Prvi Partizan SP 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.