Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 168gr | Barnes TAC-TX BT bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-26 and Hodgdon Superformance.
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.
A valid access license is required to use the Personalized Load Calculator.
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 2495 | <<locked>> | 82% | 51,793 psi | 85% | 2835 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,737 psi | 88% | 2907 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,676 psi | 83% | 2940 fps | 99.3% |
| Accurate 4064 | <<locked>> | 84% | 52,388 psi | 86% | 2890 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,113 psi | 87% | 2999 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 53,142 psi | 87% | 2927 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,447 psi | 89% | 3041 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,141 psi | 86% | 3028 fps | 96.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 52,054 psi | 85% | 3051 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,795 psi | 88% | 2953 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,911 psi | 89% | 2972 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,099 psi | 89% | 3058 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 51,634 psi | 85% | 3028 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,664 psi | 88% | 3028 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,691 psi | 83% | 3025 fps | 97.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,805 psi | 78% | 2963 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,655 psi | 68% | 2877 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,100 psi | 90% | 3166 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,441 psi | 76% | 2946 fps | 96.5% |
| Bofors RP3 | <<locked>> | 86% | 54,331 psi | 89% | 2966 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,691 psi | 83% | 3025 fps | 97.6% |
| Bofors RP7 | <<locked>> | 90% | 53,896 psi | 88% | 2946 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 86% | 54,911 psi | 90% | 2986 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 51,967 psi | 85% | 2995 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 88% | 52,098 psi | 86% | 2956 fps | 97.9% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 54,810 psi | 90% | 3018 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,302 psi | 89% | 2979 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 52,692 psi | 87% | 2969 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 51,866 psi | 85% | 3028 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,085 psi | 59% | 1850 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,519 psi | 88% | 2933 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,620 psi | 86% | 2910 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 51,866 psi | 85% | 2890 fps | 98.8% |
| IMR 4350 | <<locked>> | 94% | 55,056 psi | 90% | 2986 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 52,460 psi | 86% | 2927 fps | 98.8% |
| IMR 4831 | <<locked>> | 94% | 53,693 psi | 88% | 2989 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 51,793 psi | 85% | 2946 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,056 psi | 89% | 2969 fps | 96.3% |
| Lovex S060 | <<locked>> | 82% | 54,346 psi | 89% | 2897 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 52,576 psi | 86% | 2904 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 52,199 psi | 86% | 2920 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 53,345 psi | 88% | 2963 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,945 psi | 69% | 2782 fps | 97.9% |
| Norma 201 | <<locked>> | 82% | 53,853 psi | 88% | 2913 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,824 psi | 90% | 2913 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,200 psi | 87% | 2959 fps | 100% |
| Norma 204 | <<locked>> | 92% | 52,069 psi | 85% | 2979 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 53,853 psi | 88% | 3114 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 52,069 psi | 85% | 2982 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,041 psi | 89% | 2986 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 49,734 psi | 82% | 3009 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 94% | 54,433 psi | 89% | 3041 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,063 psi | 72% | 2877 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,709 psi | 60% | 1893 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,042 psi | 90% | 2969 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,795 psi | 90% | 3041 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,013 psi | 90% | 3081 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 52,924 psi | 87% | 3022 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 51,721 psi | 85% | 3048 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 40,451 psi | 66% | 2884 fps | 96.4% |
| Rottweil R 902 | <<locked>> | 84% | 54,578 psi | 90% | 2917 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,404 psi | 89% | 2963 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 52,678 psi | 86% | 2956 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 98% | 52,866 psi | 87% | 3015 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 53,896 psi | 88% | 2946 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 52,199 psi | 86% | 2920 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 52,576 psi | 86% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,345 psi | 88% | 2963 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 52,649 psi | 86% | 2972 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,780 psi | 88% | 2946 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,897 psi | 90% | 2844 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 52,402 psi | 86% | 2799 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 51,924 psi | 85% | 2871 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 52,388 psi | 86% | 3009 fps | 97.9% |
| Somchem S335 | <<locked>> | 82% | 54,520 psi | 90% | 2841 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,549 psi | 90% | 2959 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 54,520 psi | 90% | 2949 fps | 96.1% |
| Somchem S365 | <<locked>> | 96% | 54,563 psi | 90% | 3038 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,388 psi | 88% | 2989 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 84% | 54,795 psi | 90% | 2871 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 51,967 psi | 85% | 2844 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 52,431 psi | 86% | 2881 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,346 psi | 89% | 2982 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,255 psi | 81% | 2904 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 84% | 53,548 psi | 88% | 2887 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,461 psi | 88% | 2986 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,534 psi | 88% | 3041 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 54,331 psi | 89% | 3100 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,172 psi | 89% | 2949 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 52,199 psi | 86% | 2999 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,960 psi | 71% | 3012 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,027 psi | 89% | 2956 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,751 psi | 88% | 2982 fps | 97.9% |
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 2495 | <<locked>> | 80% | 48,559 psi | 80% | 2785 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,021 psi | 77% | 2789 fps | 97.3% |
| Accurate 3100 | <<locked>> | 88% | 33,272 psi | 55% | 2589 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 46,021 psi | 76% | 2792 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,708 psi | 57% | 2641 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 80% | 44,048 psi | 72% | 2769 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 44,672 psi | 73% | 2861 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 98% | 48,718 psi | 80% | 2966 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,385 psi | 79% | 2986 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,280 psi | 73% | 2792 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,485 psi | 78% | 2864 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,316 psi | 56% | 2657 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,870 psi | 64% | 2789 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 90% | 41,379 psi | 68% | 2795 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 94% | 41,365 psi | 68% | 2841 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,440 psi | 43% | 2448 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 92% | 32,140 psi | 53% | 2631 fps | 95% |
| Alliant Reloder-26 | 67 gr | 84% | 30,313 psi | 50% | 2625 fps | 95.1% |
| Bofors RP15 | <<locked>> | 98% | 43,424 psi | 71% | 2884 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 44,295 psi | 73% | 2802 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 41,365 psi | 68% | 2841 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 39,291 psi | 65% | 2667 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 44,976 psi | 74% | 2812 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 36,941 psi | 61% | 2694 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 82% | 42,772 psi | 70% | 2779 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 98% | 51,184 psi | 84% | 2956 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,691 psi | 52% | 2546 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,081 psi | 81% | 2910 fps | 100% |
| Hodgdon Superformance | 67.5 gr | 82% | 38,783 psi | 64% | 2766 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,876 psi | 44% | 1654 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,328 psi | 83% | 2881 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,282 psi | 76% | 2802 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,602 psi | 80% | 2831 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 39,943 psi | 66% | 2703 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,857 psi | 67% | 2703 fps | 96.4% |
| IMR 4831 | <<locked>> | 80% | 33,591 psi | 55% | 2595 fps | 97.2% |
| IMR 4895 | <<locked>> | 80% | 48,718 psi | 80% | 2894 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 50,676 psi | 83% | 2910 fps | 95.5% |
| Lovex S060 | <<locked>> | 80% | 50,995 psi | 84% | 2844 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,267 psi | 76% | 2799 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,159 psi | 63% | 2648 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 36,303 psi | 60% | 2621 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 34,374 psi | 56% | 2615 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 50,647 psi | 83% | 2864 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,314 psi | 84% | 2861 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,818 psi | 77% | 2851 fps | 100% |
| Norma 204 | <<locked>> | 86% | 42,308 psi | 69% | 2792 fps | 95% |
| Norma MRP | <<locked>> | 90% | 37,884 psi | 62% | 2792 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 34,795 psi | 57% | 2641 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 80% | 46,963 psi | 77% | 2871 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 46,079 psi | 76% | 2940 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 33,794 psi | 55% | 2621 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 98% | 40,843 psi | 67% | 2808 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,325 psi | 45% | 1693 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,947 psi | 74% | 2792 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,184 psi | 84% | 2986 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,394 psi | 68% | 2848 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,548 psi | 57% | 2657 fps | 97.1% |
| ReloadSwiss RS 70 | 63.2 gr | 80% | 33,837 psi | 56% | 2661 fps | 96.3% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 37,782 psi | 62% | 2815 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 48,080 psi | 79% | 2812 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,626 psi | 68% | 2743 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 46,311 psi | 76% | 2841 fps | 95% |
| Rottweil R 905 | <<locked>> | 92% | 42,946 psi | 71% | 2831 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 39,291 psi | 65% | 2667 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,159 psi | 63% | 2648 fps | 97.1% |
| Shooters World Precision | <<locked>> | 80% | 46,267 psi | 76% | 2799 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,303 psi | 60% | 2621 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,975 psi | 71% | 2802 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,430 psi | 83% | 2890 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,561 psi | 85% | 2795 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,395 psi | 71% | 2657 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,333 psi | 61% | 2589 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 42,540 psi | 70% | 2825 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 51,343 psi | 84% | 2795 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,235 psi | 69% | 2746 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 50,923 psi | 84% | 2890 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 31,183 psi | 51% | 2592 fps | 99.2% |
| Somchem S385 | <<locked>> | 88% | 38,159 psi | 63% | 2697 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 48,254 psi | 79% | 2779 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,646 psi | 80% | 2792 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,219 psi | 66% | 2674 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,318 psi | 60% | 2644 fps | 97.8% |
| Vihtavuori N165 | <<locked>> | 94% | 40,306 psi | 66% | 2733 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 47,079 psi | 77% | 2789 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,766 psi | 59% | 2644 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 82% | 28,964 psi | 48% | 2530 fps | 95.9% |
| Vihtavuori N560 | <<locked>> | 98% | 50,792 psi | 83% | 3041 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,621 psi | 58% | 2615 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 37,086 psi | 61% | 2697 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 24,874 psi | 41% | 2470 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,372 psi | 83% | 2897 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 43,279 psi | 71% | 2799 fps | 95.5% |
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 93 powders for .300 Blaser Mag. loaded with the .308 | 168gr | Barnes TAC-TX BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,166 fps; across all powders the maximum-charge window runs from 1,850 fps to 3,166 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.308" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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. ReloadSwiss RS 70, Alliant Reloder-26, Hodgdon Superformance rank at the top here: for .300 Blaser Mag. with the .308 | 168gr | Barnes TAC-TX 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.