Load Specifications
Load data in caliber 7 mm Blaser Mag. with .285 | 173gr | Prvi Partizan FMJ BT 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 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>> | 90% | 51,692 psi | 85% | 2743 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 52,779 psi | 87% | 2766 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 53,940 psi | 89% | 2897 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 88% | 53,403 psi | 88% | 2825 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 92% | 54,781 psi | 90% | 2890 fps | 99.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,895 psi | 87% | 2858 fps | 99.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,239 psi | 78% | 2825 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 53,780 psi | 88% | 2825 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 53,780 psi | 88% | 2825 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 84% | 53,650 psi | 88% | 2818 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 53,171 psi | 87% | 2818 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,013 psi | 90% | 2887 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 53,026 psi | 87% | 2802 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 52,315 psi | 86% | 2864 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 53,069 psi | 87% | 2887 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 49,211 psi | 81% | 2874 fps | 96.2% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 52,852 psi | 87% | 2799 fps | 97% |
| Bofors RP15 | <<locked>> | 94% | 54,215 psi | 89% | 2874 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 51,982 psi | 85% | 2871 fps | 99.5% |
| Bofors RP5 | <<locked>> | 92% | 55,013 psi | 90% | 2887 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 54,723 psi | 90% | 2766 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 54,360 psi | 89% | 2884 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 54,186 psi | 89% | 2818 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 54,665 psi | 90% | 2828 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 90% | 53,664 psi | 88% | 2812 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 53,896 psi | 88% | 2743 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,839 psi | 90% | 2999 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,346 psi | 89% | 2854 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,318 psi | 61% | 1759 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 53,069 psi | 87% | 2756 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 53,113 psi | 87% | 2759 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 52,199 psi | 86% | 2759 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 92% | 52,939 psi | 87% | 2871 fps | 99.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,917 psi | 70% | 2733 fps | 98% |
| Lovex S065 | <<locked>> | 82% | 53,461 psi | 88% | 2736 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,027 psi | 90% | 2782 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 53,156 psi | 87% | 2766 fps | 100% |
| Norma 204 | <<locked>> | 84% | 53,867 psi | 88% | 2812 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 43,279 psi | 71% | 2759 fps | 99.6% |
| Norma MRP | <<locked>> | 90% | 55,042 psi | 90% | 2907 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,578 psi | 90% | 2799 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 53,577 psi | 88% | 2890 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 53,606 psi | 88% | 2812 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 51,953 psi | 85% | 2828 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,276 psi | 63% | 1801 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 52,750 psi | 87% | 2789 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,636 psi | 90% | 2871 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 51,474 psi | 85% | 2933 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 54,505 psi | 89% | 2953 fps | 99% |
| Rottweil R 904 | <<locked>> | 88% | 54,563 psi | 90% | 2799 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 88% | 52,678 psi | 86% | 2808 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 54,723 psi | 90% | 2766 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 53,461 psi | 88% | 2736 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,027 psi | 90% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 52,446 psi | 86% | 2687 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 52,286 psi | 86% | 2805 fps | 99.8% |
| Somchem S361 | <<locked>> | 86% | 52,214 psi | 86% | 2733 fps | 98.6% |
| Somchem S365 | <<locked>> | 84% | 51,924 psi | 85% | 2753 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 52,982 psi | 87% | 2779 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 52,881 psi | 87% | 2740 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 52,663 psi | 86% | 2762 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 82% | 51,982 psi | 85% | 2746 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,100 psi | 90% | 2828 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,781 psi | 90% | 2907 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 96% | 54,955 psi | 90% | 2894 fps | 99.4% |
| Vihtavuori N568 | <<locked>> | 98% | 51,532 psi | 85% | 2890 fps | 98.2% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 52,533 psi | 86% | 2946 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 51,938 psi | 85% | 2697 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,447 psi | 89% | 2825 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,056 psi | 90% | 2940 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 52,866 psi | 87% | 2776 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% | 36,941 psi | 61% | 2477 fps | 99.1% |
| Accurate 4350 | <<locked>> | 80% | 49,197 psi | 81% | 2713 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 40,698 psi | 67% | 2648 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 40,901 psi | 67% | 2602 fps | 98% |
| ADI AR 2213 | <<locked>> | 80% | 36,651 psi | 60% | 2536 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 88% | 35,476 psi | 58% | 2510 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 84% | 28,152 psi | 46% | 2359 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,307 psi | 68% | 2602 fps | 98.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,307 psi | 68% | 2602 fps | 98.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,050 psi | 77% | 2717 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,944 psi | 67% | 2598 fps | 98.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,956 psi | 61% | 2549 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,621 psi | 58% | 2503 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,806 psi | 51% | 2428 fps | 98.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,233 psi | 64% | 2651 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 45,861 psi | 75% | 2808 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 46,746 psi | 77% | 2687 fps | 95.5% |
| Bofors RP15 | <<locked>> | 80% | 34,316 psi | 56% | 2484 fps | 96% |
| Bofors RP30 | <<locked>> | 86% | 34,606 psi | 57% | 2523 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 36,956 psi | 61% | 2549 fps | 97.1% |
| Bofors RP7 | <<locked>> | 80% | 51,401 psi | 84% | 2713 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 33,808 psi | 56% | 2470 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 50,662 psi | 83% | 2766 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 38,943 psi | 64% | 2539 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 38,406 psi | 63% | 2530 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,527 psi | 73% | 2602 fps | 100% |
| Hodgdon Retumbo | 59 gr | 82% | 32,213 psi | 53% | 2510 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 50,705 psi | 83% | 2799 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,021 psi | 46% | 1572 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,673 psi | 77% | 2651 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 46,775 psi | 77% | 2661 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,582 psi | 67% | 2539 fps | 96.3% |
| IMR 7828 SSC | <<locked>> | 80% | 35,288 psi | 58% | 2516 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 94% | 35,201 psi | 58% | 2559 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 50,314 psi | 83% | 2687 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,631 psi | 80% | 2680 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 31,908 psi | 52% | 2362 fps | 97.8% |
| Norma 204 | <<locked>> | 80% | 46,978 psi | 77% | 2694 fps | 99% |
| Norma 217 | <<locked>> | 88% | 28,935 psi | 48% | 2411 fps | 95% |
| Norma MRP | <<locked>> | 80% | 38,667 psi | 63% | 2615 fps | 98.8% |
| Norma URP | <<locked>> | 80% | 48,066 psi | 79% | 2697 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 34,780 psi | 57% | 2520 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 46,905 psi | 77% | 2703 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 31,038 psi | 51% | 2405 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,747 psi | 47% | 1611 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,269 psi | 81% | 2736 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,442 psi | 78% | 2756 fps | 100% |
| ReloadSwiss RS 76 | 61.6 gr | 80% | 29,095 psi | 48% | 2418 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 40,321 psi | 66% | 2690 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 42,163 psi | 69% | 2579 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 80% | 40,408 psi | 66% | 2585 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 80% | 51,401 psi | 84% | 2713 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,314 psi | 83% | 2687 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,631 psi | 80% | 2680 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,269 psi | 81% | 2638 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,074 psi | 66% | 2579 fps | 98% |
| Somchem S361 | <<locked>> | 80% | 42,960 psi | 71% | 2572 fps | 96.8% |
| Somchem S365 | <<locked>> | 80% | 45,266 psi | 74% | 2654 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,031 psi | 67% | 2569 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 80% | 49,429 psi | 81% | 2690 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,491 psi | 58% | 2444 fps | 97.2% |
| Vihtavuori N550 | <<locked>> | 80% | 48,878 psi | 80% | 2697 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,842 psi | 65% | 2575 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,725 psi | 64% | 2602 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 84% | 36,506 psi | 60% | 2543 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 92% | 41,698 psi | 68% | 2703 fps | 95.7% |
| Vihtavuori N570 | <<locked>> | 98% | 48,921 psi | 80% | 2881 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,602 psi | 80% | 2648 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,879 psi | 84% | 2766 fps | 100% |
| Winchester StaBALL HD | 59.1 gr | 80% | 31,981 psi | 53% | 2543 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,391 psi | 61% | 2493 fps | 97.1% |
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 .285 | 173gr | Prvi Partizan FMJ BT. Hodgdon Retumbo delivers the highest muzzle velocity at 2,999 fps; across all powders the maximum-charge window runs from 1,759 fps to 2,999 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 173.0 gr projectile in 0.285" calls for a 1:12.0 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 .285 | 173gr | Prvi Partizan FMJ 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.