Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 185gr | Berger VLD Hunting bullet and 80 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Alliant Reloder-26 and Accurate High Country.
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>> | 98% | 54,549 psi | 90% | 2871 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 52,910 psi | 87% | 2864 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 52,127 psi | 86% | 2963 fps | 98% |
| Accurate MAGPRO | <<locked>> | 96% | 52,997 psi | 87% | 2963 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 82% | 51,822 psi | 85% | 2779 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 53,664 psi | 88% | 2910 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 98% | 54,911 psi | 90% | 2966 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,855 psi | 62% | 2687 fps | 97.2% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,635 psi | 88% | 2904 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 52,692 psi | 87% | 2802 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 53,650 psi | 88% | 2917 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,708 psi | 90% | 2936 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 53,171 psi | 87% | 2897 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,244 psi | 89% | 2963 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,071 psi | 90% | 2936 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,601 psi | 78% | 2881 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 51,213 psi | 84% | 2969 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,185 psi | 87% | 2943 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 53,476 psi | 88% | 2818 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,468 psi | 71% | 2802 fps | 96.4% |
| Bofors RP5 | <<locked>> | 98% | 54,244 psi | 89% | 2963 fps | 99.1% |
| Bofors RP7 | <<locked>> | 86% | 52,765 psi | 87% | 2808 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,021 psi | 77% | 2818 fps | 97.4% |
| Hodgdon H380 | <<locked>> | 82% | 53,780 psi | 88% | 2838 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,824 psi | 90% | 2913 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 54,505 psi | 89% | 2874 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 96% | 54,940 psi | 90% | 2904 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,983 psi | 89% | 2890 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 53,969 psi | 89% | 2841 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,572 psi | 76% | 2927 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 88% | 55,042 psi | 90% | 2953 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,666 psi | 60% | 1778 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,563 psi | 90% | 2812 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 53,954 psi | 89% | 2848 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,447 psi | 89% | 2838 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 53,258 psi | 87% | 2854 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,084 psi | 87% | 2838 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 98% | 52,446 psi | 86% | 2936 fps | 97.8% |
| Lovex S062 | <<locked>> | 82% | 55,042 psi | 90% | 2805 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,636 psi | 90% | 2835 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 52,605 psi | 86% | 2825 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,530 psi | 80% | 2779 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 54,708 psi | 90% | 2900 fps | 98.9% |
| Norma MRP | <<locked>> | 96% | 53,766 psi | 88% | 2986 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 54,969 psi | 90% | 2897 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 52,939 psi | 87% | 2956 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 53,896 psi | 88% | 2904 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,865 psi | 84% | 2890 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,420 psi | 61% | 1821 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 53,534 psi | 88% | 2822 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,070 psi | 89% | 2923 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 52,605 psi | 86% | 2884 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,694 psi | 90% | 2969 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,615 psi | 77% | 2920 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 84% | 53,838 psi | 88% | 2818 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 51,895 psi | 85% | 2825 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 94% | 52,344 psi | 86% | 2884 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 86% | 52,765 psi | 87% | 2808 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,636 psi | 90% | 2835 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 55,042 psi | 90% | 2805 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 52,605 psi | 86% | 2825 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 51,547 psi | 85% | 2822 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,331 psi | 89% | 2697 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,157 psi | 89% | 2785 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 51,909 psi | 85% | 2881 fps | 98.8% |
| Somchem S355 | <<locked>> | 84% | 53,708 psi | 88% | 2812 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 53,330 psi | 88% | 2818 fps | 97.2% |
| Somchem S365 | <<locked>> | 92% | 54,766 psi | 90% | 2900 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 52,953 psi | 87% | 2858 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 86% | 54,694 psi | 90% | 2782 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 53,606 psi | 88% | 2841 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 52,373 psi | 86% | 2835 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 88% | 52,678 psi | 86% | 2844 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,041 psi | 89% | 2913 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,940 psi | 89% | 2976 fps | 97.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,777 psi | 82% | 2890 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 52,910 psi | 87% | 2802 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,071 psi | 90% | 2920 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,995 psi | 84% | 3015 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 52,852 psi | 87% | 2851 fps | 98.7% |
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% | 29,631 psi | 49% | 2382 fps | 95% |
| Accurate 4350 | <<locked>> | 80% | 40,176 psi | 66% | 2641 fps | 99.5% |
| Accurate High Country | 69.2 gr | 88% | 42,148 psi | 69% | 2772 fps | 95.6% |
| Accurate MAGPRO | 73.7 gr | 92% | 45,818 psi | 75% | 2831 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 48,863 psi | 80% | 2733 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 38,725 psi | 64% | 2621 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 92% | 44,875 psi | 74% | 2782 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 96% | 33,402 psi | 55% | 2566 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 38,812 psi | 64% | 2621 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,458 psi | 81% | 2753 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,769 psi | 64% | 2648 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,338 psi | 73% | 2772 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,450 psi | 63% | 2615 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 88% | 38,856 psi | 64% | 2671 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,645 psi | 47% | 2415 fps | 98.2% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,472 psi | 50% | 2480 fps | 95.9% |
| Alliant Reloder-26 | 64.8 gr | 80% | 30,661 psi | 50% | 2530 fps | 96.9% |
| Bofors RP15 | <<locked>> | 90% | 38,392 psi | 63% | 2657 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 50,154 psi | 82% | 2769 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 40,698 psi | 67% | 2743 fps | 95.5% |
| Bofors RP5 | <<locked>> | 88% | 38,856 psi | 64% | 2671 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 43,787 psi | 72% | 2648 fps | 97.9% |
| Hodgdon H1000 | <<locked>> | 96% | 41,176 psi | 68% | 2700 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 50,227 psi | 82% | 2782 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,032 psi | 69% | 2687 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 80% | 44,860 psi | 74% | 2703 fps | 97.5% |
| Hodgdon H4831 | <<locked>> | 90% | 44,875 psi | 74% | 2730 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 44,106 psi | 72% | 2713 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,535 psi | 60% | 2543 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 94% | 38,421 psi | 63% | 2736 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 41,017 psi | 67% | 2703 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,398 psi | 45% | 1588 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,387 psi | 84% | 2762 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,407 psi | 65% | 2579 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,194 psi | 74% | 2677 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 38,464 psi | 63% | 2592 fps | 99.3% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,034 psi | 72% | 2674 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 92% | 43,033 psi | 71% | 2759 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 51,663 psi | 85% | 2756 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,743 psi | 70% | 2628 fps | 99.1% |
| Lovex S070 | <<locked>> | 80% | 41,060 psi | 67% | 2615 fps | 98% |
| Lovex S071 | <<locked>> | 86% | 31,009 psi | 51% | 2418 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 38,943 psi | 64% | 2608 fps | 95.4% |
| Norma MRP | <<locked>> | 82% | 33,098 psi | 54% | 2559 fps | 95% |
| Norma URP | <<locked>> | 80% | 39,842 psi | 65% | 2635 fps | 99.4% |
| Ramshot Grand | <<locked>> | 92% | 42,714 psi | 70% | 2762 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 38,609 psi | 63% | 2625 fps | 98% |
| Ramshot Magnum | <<locked>> | 90% | 35,360 psi | 58% | 2579 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,949 psi | 46% | 1627 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,053 psi | 82% | 2766 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,079 psi | 77% | 2818 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,943 psi | 66% | 2657 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,624 psi | 63% | 2671 fps | 99% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 35,186 psi | 58% | 2651 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 47,282 psi | 78% | 2717 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 42,786 psi | 70% | 2657 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 84% | 37,739 psi | 62% | 2605 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 43,787 psi | 72% | 2648 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,743 psi | 70% | 2628 fps | 99.1% |
| Shooters World Precision | <<locked>> | 80% | 51,663 psi | 85% | 2756 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,060 psi | 67% | 2615 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,385 psi | 79% | 2772 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,964 psi | 79% | 2608 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,901 psi | 69% | 2575 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,391 psi | 61% | 2598 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 47,282 psi | 78% | 2713 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 46,760 psi | 77% | 2707 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 36,361 psi | 60% | 2592 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 35,839 psi | 59% | 2530 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 45,281 psi | 74% | 2641 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,147 psi | 68% | 2628 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 86% | 35,244 psi | 58% | 2510 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 40,553 psi | 67% | 2631 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 31,807 psi | 52% | 2487 fps | 98.2% |
| Vihtavuori N560 | <<locked>> | 90% | 43,990 psi | 72% | 2792 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 96% | 43,424 psi | 71% | 2772 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,147 psi | 66% | 2595 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,221 psi | 69% | 2690 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,367 psi | 42% | 2402 fps | 97.7% |
| Winchester Supreme 780 | <<locked>> | 86% | 37,434 psi | 61% | 2566 fps | 95% |
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 80 powders for .300 Blaser Mag. loaded with the .308 | 185gr | Berger VLD Hunting. Winchester StaBALL HD delivers the highest muzzle velocity at 3,015 fps; across all powders the maximum-charge window runs from 1,778 fps to 3,015 fps. ADI AR 2225 gives the best case fill at 100 %, and 80 of the 80 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 185.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, Alliant Reloder-25 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. Accurate MAGPRO, Alliant Reloder-26, Accurate High Country rank at the top here: for .300 Blaser Mag. with the .308 | 185gr | Berger VLD Hunting 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.