Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 180gr | Berger Elite Hunter bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
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 2700 | <<locked>> | 82% | 54,607 psi | 90% | 2835 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 53,142 psi | 87% | 2887 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 54,288 psi | 89% | 2818 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,969 psi | 90% | 2930 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 54,201 psi | 89% | 3031 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 96% | 51,343 psi | 84% | 2969 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 84% | 54,157 psi | 89% | 2851 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 52,460 psi | 86% | 2923 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 98% | 53,679 psi | 88% | 2976 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,941 psi | 61% | 2690 fps | 96.4% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 52,446 psi | 86% | 2920 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,998 psi | 90% | 2874 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,071 psi | 90% | 2894 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 52,373 psi | 86% | 2936 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,345 psi | 88% | 2956 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 51,764 psi | 85% | 2910 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 52,837 psi | 87% | 2976 fps | 98.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,316 psi | 88% | 2949 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,383 psi | 76% | 2890 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,505 psi | 88% | 3045 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,634 psi | 85% | 2953 fps | 98.4% |
| Bofors RP3 | <<locked>> | 82% | 52,330 psi | 86% | 2838 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 52,837 psi | 87% | 2976 fps | 98.7% |
| Bofors RP7 | <<locked>> | 88% | 55,114 psi | 90% | 2881 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,934 psi | 75% | 2825 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 82% | 52,649 psi | 86% | 2858 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 53,606 psi | 88% | 2930 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 53,113 psi | 87% | 2887 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 96% | 53,650 psi | 88% | 2917 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 96% | 52,504 psi | 86% | 2897 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 52,663 psi | 86% | 2858 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,397 psi | 75% | 2933 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 88% | 53,461 psi | 88% | 2963 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,651 psi | 60% | 1801 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 53,534 psi | 88% | 2831 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 52,866 psi | 87% | 2864 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,447 psi | 88% | 2854 fps | 99.4% |
| IMR 4831 | <<locked>> | 90% | 52,011 psi | 85% | 2871 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,011 psi | 85% | 2851 fps | 96.8% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,694 psi | 90% | 3009 fps | 97.9% |
| Lovex S062 | <<locked>> | 82% | 53,737 psi | 88% | 2825 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,548 psi | 88% | 2851 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 54,839 psi | 90% | 2897 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,282 psi | 78% | 2792 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 54,404 psi | 89% | 2881 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,258 psi | 87% | 2910 fps | 98.4% |
| Norma MRP | <<locked>> | 96% | 52,344 psi | 86% | 2999 fps | 99.5% |
| Norma URP | <<locked>> | 90% | 53,751 psi | 88% | 2917 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,114 psi | 90% | 2907 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 51,358 psi | 84% | 2963 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 90% | 52,388 psi | 86% | 2917 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,298 psi | 81% | 2897 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,391 psi | 61% | 1844 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 52,446 psi | 86% | 2838 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 52,721 psi | 87% | 2946 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,984 psi | 90% | 2956 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,374 psi | 88% | 2986 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,426 psi | 75% | 2927 fps | 99% |
| Rottweil R 903 | <<locked>> | 84% | 52,431 psi | 86% | 2835 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 53,911 psi | 89% | 2890 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 96% | 54,578 psi | 90% | 2956 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 88% | 55,114 psi | 90% | 2881 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,548 psi | 88% | 2851 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 53,737 psi | 88% | 2825 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,839 psi | 90% | 2897 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 53,954 psi | 89% | 2897 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,345 psi | 88% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 53,055 psi | 87% | 2805 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,114 psi | 89% | 2949 fps | 98.8% |
| Somchem S355 | <<locked>> | 84% | 52,388 psi | 86% | 2831 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 52,228 psi | 86% | 2831 fps | 96.6% |
| Somchem S365 | <<locked>> | 92% | 53,316 psi | 88% | 2920 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 51,735 psi | 85% | 2874 fps | 99% |
| Vihtavuori N150 | <<locked>> | 86% | 53,606 psi | 88% | 2805 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 52,199 psi | 86% | 2854 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,621 psi | 90% | 2904 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 54,549 psi | 90% | 2805 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,868 psi | 90% | 2913 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 52,359 psi | 86% | 2927 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 52,591 psi | 86% | 2989 fps | 97.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,182 psi | 79% | 2897 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 51,692 psi | 85% | 2822 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,606 psi | 88% | 2930 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,907 psi | 80% | 3025 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 51,576 psi | 85% | 2864 fps | 98.3% |
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 2700 | <<locked>> | 80% | 51,082 psi | 84% | 2779 fps | 98.7% |
| Accurate 3100 | <<locked>> | 82% | 30,850 psi | 51% | 2444 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 50,966 psi | 84% | 2769 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,102 psi | 64% | 2651 fps | 99.2% |
| Accurate High Country | <<locked>> | 90% | 43,976 psi | 72% | 2844 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 94% | 47,848 psi | 79% | 2904 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 47,718 psi | 78% | 2746 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,379 psi | 66% | 2690 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 92% | 43,888 psi | 72% | 2792 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 98% | 34,664 psi | 57% | 2628 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,495 psi | 66% | 2690 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,428 psi | 80% | 2772 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,692 psi | 85% | 2841 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,826 psi | 62% | 2661 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,221 psi | 71% | 2785 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,059 psi | 66% | 2684 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 88% | 37,884 psi | 62% | 2680 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,905 psi | 46% | 2421 fps | 97.6% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,662 psi | 52% | 2546 fps | 96.1% |
| Alliant Reloder-26 | 64.7 gr | 80% | 29,805 psi | 49% | 2533 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 39,900 psi | 66% | 2723 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 49,037 psi | 81% | 2785 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 37,884 psi | 62% | 2680 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 42,917 psi | 70% | 2664 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 98% | 43,004 psi | 71% | 2766 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 49,182 psi | 81% | 2799 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 41,046 psi | 67% | 2700 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 43,918 psi | 72% | 2720 fps | 97% |
| Hodgdon H4831 | <<locked>> | 92% | 46,833 psi | 77% | 2799 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 45,992 psi | 76% | 2782 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,433 psi | 58% | 2549 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,318 psi | 61% | 2736 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 40,001 psi | 66% | 2713 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,369 psi | 45% | 1611 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,198 psi | 82% | 2779 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,566 psi | 63% | 2592 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,324 psi | 73% | 2694 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 37,521 psi | 62% | 2602 fps | 98.9% |
| IMR 4955 Enduron | <<locked>> | 90% | 45,890 psi | 75% | 2743 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 94% | 44,860 psi | 74% | 2828 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 50,647 psi | 83% | 2776 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,872 psi | 69% | 2644 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 40,176 psi | 66% | 2628 fps | 97.5% |
| Lovex S071 | <<locked>> | 88% | 32,097 psi | 53% | 2477 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 51,024 psi | 84% | 2828 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,640 psi | 67% | 2674 fps | 95.5% |
| Norma MRP | 66 gr | 84% | 34,548 psi | 57% | 2628 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 38,885 psi | 64% | 2648 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 51,474 psi | 85% | 2851 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,570 psi | 73% | 2831 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 37,666 psi | 62% | 2635 fps | 97.5% |
| Ramshot Magnum | <<locked>> | 92% | 36,956 psi | 61% | 2644 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,920 psi | 46% | 1650 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,081 psi | 81% | 2782 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,905 psi | 75% | 2838 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,885 psi | 64% | 2671 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,536 psi | 62% | 2677 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,724 psi | 60% | 2720 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 80% | 46,180 psi | 76% | 2736 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,657 psi | 73% | 2726 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 86% | 39,117 psi | 64% | 2664 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 42,917 psi | 70% | 2664 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,872 psi | 69% | 2644 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 50,647 psi | 83% | 2776 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,176 psi | 66% | 2628 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,311 psi | 78% | 2789 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,050 psi | 77% | 2628 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,886 psi | 67% | 2585 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,754 psi | 64% | 2661 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 46,296 psi | 76% | 2730 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 48,863 psi | 80% | 2772 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 35,346 psi | 58% | 2605 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 37,304 psi | 61% | 2595 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 44,324 psi | 73% | 2661 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,190 psi | 66% | 2641 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 36,651 psi | 60% | 2572 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 51,053 psi | 84% | 2756 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,610 psi | 65% | 2644 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 30,893 psi | 51% | 2497 fps | 97.6% |
| Vihtavuori N560 | 72.3 gr | 92% | 45,948 psi | 75% | 2864 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 98% | 45,063 psi | 74% | 2838 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,262 psi | 64% | 2612 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,046 psi | 67% | 2700 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,685 psi | 41% | 2398 fps | 96.7% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,030 psi | 64% | 2631 fps | 95.2% |
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 85 powders for .300 Blaser Mag. loaded with the .308 | 180gr | Berger Elite Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 3,045 fps; across all powders the maximum-charge window runs from 1,801 fps to 3,045 fps. ADI AR 2225 gives the best case fill at 100 %, and 85 of the 85 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 180.0 gr projectile in 0.308" calls for a 1:11.5 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .300 Blaser Mag. with the .308 | 180gr | Berger Elite Hunter 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.