Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 185gr | Berger JUG bullet and 80 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate MAGPRO 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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 54,969 psi | 90% | 2881 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 53,185 psi | 87% | 2867 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 52,344 psi | 86% | 2969 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 96% | 53,171 psi | 87% | 2966 fps | 97% |
| ADI AR 2208 | <<locked>> | 82% | 52,069 psi | 85% | 2785 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 53,853 psi | 88% | 2913 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 96% | 51,532 psi | 85% | 2910 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,116 psi | 63% | 2694 fps | 97.4% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,925 psi | 89% | 2910 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 52,939 psi | 87% | 2808 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 53,853 psi | 88% | 2923 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,940 psi | 90% | 2940 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 53,359 psi | 88% | 2904 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,694 psi | 90% | 2969 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 51,721 psi | 85% | 2890 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,993 psi | 79% | 2887 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 51,677 psi | 85% | 2979 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,388 psi | 88% | 2946 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 53,780 psi | 88% | 2825 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,859 psi | 72% | 2812 fps | 96.6% |
| Bofors RP5 | <<locked>> | 98% | 54,694 psi | 90% | 2969 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 53,200 psi | 87% | 2818 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,369 psi | 78% | 2828 fps | 97.5% |
| Hodgdon H380 | <<locked>> | 82% | 53,998 psi | 89% | 2841 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,056 psi | 90% | 2920 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 54,694 psi | 90% | 2877 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 94% | 51,764 psi | 85% | 2854 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,143 psi | 89% | 2894 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,172 psi | 89% | 2844 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,949 psi | 77% | 2933 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 86% | 51,300 psi | 84% | 2894 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,637 psi | 60% | 1781 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,810 psi | 90% | 2815 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 54,172 psi | 89% | 2851 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,636 psi | 90% | 2841 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 53,490 psi | 88% | 2858 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,258 psi | 87% | 2844 fps | 97.4% |
| IMR 7828 SSC | <<locked>> | 98% | 52,837 psi | 87% | 2946 fps | 97.9% |
| Lovex S062 | <<locked>> | 82% | 55,042 psi | 90% | 2805 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,824 psi | 90% | 2838 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 53,026 psi | 87% | 2835 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,979 psi | 80% | 2789 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 54,882 psi | 90% | 2907 fps | 98.9% |
| Norma MRP | <<locked>> | 96% | 54,230 psi | 89% | 2992 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 51,996 psi | 85% | 2854 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,069 psi | 87% | 2963 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 54,070 psi | 89% | 2907 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,256 psi | 84% | 2897 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,391 psi | 61% | 1824 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 53,722 psi | 88% | 2825 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,607 psi | 90% | 2933 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 53,055 psi | 87% | 2890 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,897 psi | 90% | 2972 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,934 psi | 77% | 2927 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 84% | 54,085 psi | 89% | 2822 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 52,054 psi | 85% | 2831 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 94% | 52,779 psi | 87% | 2894 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 86% | 53,200 psi | 87% | 2818 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,824 psi | 90% | 2838 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 55,042 psi | 90% | 2805 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 53,026 psi | 87% | 2835 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 51,996 psi | 85% | 2828 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,592 psi | 90% | 2700 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,331 psi | 89% | 2792 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 52,330 psi | 86% | 2887 fps | 98.8% |
| Somchem S355 | <<locked>> | 84% | 53,940 psi | 89% | 2818 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 53,693 psi | 88% | 2825 fps | 97.3% |
| Somchem S365 | <<locked>> | 92% | 54,998 psi | 90% | 2904 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 53,388 psi | 88% | 2867 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 84% | 51,750 psi | 85% | 2743 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 53,853 psi | 88% | 2844 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 52,808 psi | 87% | 2844 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 88% | 52,866 psi | 87% | 2848 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,244 psi | 89% | 2920 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,346 psi | 89% | 2986 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,937 psi | 82% | 2894 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 53,287 psi | 87% | 2808 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 51,677 psi | 85% | 2867 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,227 psi | 84% | 3018 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 53,229 psi | 87% | 2861 fps | 98.8% |
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% | 29,834 psi | 49% | 2385 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 40,422 psi | 66% | 2648 fps | 99.5% |
| Accurate High Country | 69.6 gr | 88% | 42,525 psi | 70% | 2782 fps | 95.7% |
| Accurate MAGPRO | 74.1 gr | 92% | 46,180 psi | 76% | 2841 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 48,878 psi | 80% | 2733 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 38,899 psi | 64% | 2628 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 90% | 42,221 psi | 69% | 2726 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 33,518 psi | 55% | 2572 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 39,030 psi | 64% | 2628 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,705 psi | 82% | 2759 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,957 psi | 64% | 2654 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,570 psi | 73% | 2776 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,653 psi | 63% | 2621 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,059 psi | 64% | 2677 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,819 psi | 47% | 2418 fps | 98.3% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,603 psi | 50% | 2487 fps | 96% |
| Alliant Reloder-26 | 65.2 gr | 80% | 30,966 psi | 51% | 2539 fps | 97.1% |
| Bofors RP15 | <<locked>> | 90% | 38,740 psi | 64% | 2667 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 50,386 psi | 83% | 2772 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 41,060 psi | 67% | 2753 fps | 95.7% |
| Bofors RP5 | <<locked>> | 88% | 39,059 psi | 64% | 2677 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 44,019 psi | 72% | 2654 fps | 98% |
| Hodgdon H1000 | <<locked>> | 96% | 41,495 psi | 68% | 2707 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 50,459 psi | 83% | 2785 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,250 psi | 69% | 2694 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 80% | 45,078 psi | 74% | 2710 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 90% | 45,237 psi | 74% | 2736 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 90% | 44,266 psi | 73% | 2720 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,593 psi | 60% | 2543 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,216 psi | 59% | 2680 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 41,176 psi | 68% | 2707 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,412 psi | 45% | 1591 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,416 psi | 84% | 2766 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,610 psi | 65% | 2585 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,411 psi | 75% | 2684 fps | 98.6% |
| IMR 4831 | <<locked>> | 80% | 38,696 psi | 64% | 2595 fps | 99.3% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,179 psi | 73% | 2680 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 92% | 43,178 psi | 71% | 2762 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 51,924 psi | 85% | 2762 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,975 psi | 71% | 2635 fps | 99.1% |
| Lovex S070 | <<locked>> | 80% | 41,278 psi | 68% | 2621 fps | 98% |
| Lovex S071 | <<locked>> | 86% | 31,198 psi | 51% | 2421 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 39,160 psi | 64% | 2612 fps | 95.4% |
| Norma MRP | <<locked>> | 82% | 33,257 psi | 55% | 2566 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 40,074 psi | 66% | 2638 fps | 99.4% |
| Ramshot Grand | <<locked>> | 92% | 42,902 psi | 70% | 2769 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 38,812 psi | 64% | 2628 fps | 98.1% |
| Ramshot Magnum | <<locked>> | 90% | 35,636 psi | 59% | 2589 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,978 psi | 46% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,488 psi | 83% | 2772 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,340 psi | 78% | 2825 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,161 psi | 66% | 2664 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,798 psi | 64% | 2677 fps | 99% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 35,447 psi | 58% | 2661 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 47,543 psi | 78% | 2723 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 42,960 psi | 71% | 2664 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 84% | 37,927 psi | 62% | 2608 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 44,019 psi | 72% | 2654 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,975 psi | 71% | 2635 fps | 99.1% |
| Shooters World Precision | <<locked>> | 80% | 51,924 psi | 85% | 2762 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,278 psi | 68% | 2621 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,617 psi | 80% | 2776 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,225 psi | 79% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,959 psi | 69% | 2579 fps | 98.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,579 psi | 62% | 2602 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 47,529 psi | 78% | 2717 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 46,920 psi | 77% | 2710 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 36,608 psi | 60% | 2595 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,056 psi | 59% | 2536 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 45,513 psi | 75% | 2648 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,379 psi | 68% | 2635 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 35,549 psi | 58% | 2520 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 40,756 psi | 67% | 2635 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 32,039 psi | 53% | 2493 fps | 98.3% |
| Vihtavuori N560 | <<locked>> | 90% | 44,353 psi | 73% | 2802 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 43,569 psi | 72% | 2776 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,350 psi | 66% | 2598 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,424 psi | 70% | 2697 fps | 98.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,498 psi | 42% | 2408 fps | 97.9% |
| Winchester Supreme 780 | <<locked>> | 86% | 37,608 psi | 62% | 2569 fps | 95.1% |
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 80 powders for .300 Blaser Mag. loaded with the .308 | 185gr | Berger JUG. Winchester StaBALL HD delivers the highest muzzle velocity at 3,018 fps; across all powders the maximum-charge window runs from 1,781 fps to 3,018 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-25, Bofors RP15 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. Alliant Reloder-26, Accurate MAGPRO, Accurate High Country rank at the top here: for .300 Blaser Mag. with the .308 | 185gr | Berger JUG 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.