Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 168gr | Barnes TAC-X bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Hodgdon H414.
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 2495 | <<locked>> | 82% | 53,200 psi | 87% | 2858 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,998 psi | 90% | 2933 fps | 98.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,359 psi | 86% | 2972 fps | 99.6% |
| Accurate 4064 | <<locked>> | 84% | 53,534 psi | 88% | 2913 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,578 psi | 90% | 3028 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 54,839 psi | 90% | 3120 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 86% | 54,302 psi | 89% | 2956 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 52,475 psi | 86% | 3018 fps | 97.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,592 psi | 88% | 3068 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,534 psi | 88% | 3081 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,027 psi | 90% | 2979 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 51,735 psi | 85% | 2946 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 52,141 psi | 86% | 3035 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,069 psi | 87% | 3054 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 51,590 psi | 85% | 3002 fps | 97.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,272 psi | 86% | 3058 fps | 98.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,240 psi | 81% | 2992 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,917 psi | 70% | 2913 fps | 99% |
| Alliant Reloder-26 | <<locked>> | 98% | 52,953 psi | 87% | 3136 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,935 psi | 79% | 2979 fps | 97.1% |
| Bofors RP3 | <<locked>> | 84% | 52,011 psi | 85% | 2936 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,272 psi | 86% | 3058 fps | 98.1% |
| Bofors RP7 | <<locked>> | 88% | 51,793 psi | 85% | 2920 fps | 98.5% |
| Hodgdon H380 | <<locked>> | 84% | 52,576 psi | 86% | 2956 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 53,476 psi | 88% | 3028 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 88% | 53,359 psi | 88% | 2986 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 98% | 53,824 psi | 88% | 3009 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,634 psi | 86% | 2992 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 52,330 psi | 86% | 2956 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 53,925 psi | 89% | 2992 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 53,519 psi | 88% | 3064 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,187 psi | 59% | 1860 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,737 psi | 90% | 2959 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,882 psi | 88% | 2940 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 52,924 psi | 87% | 2917 fps | 99% |
| IMR 4350 | <<locked>> | 92% | 52,794 psi | 87% | 2956 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 53,708 psi | 88% | 2956 fps | 99.1% |
| IMR 4831 | <<locked>> | 92% | 51,735 psi | 85% | 2966 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 53,098 psi | 87% | 2976 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,141 psi | 86% | 2943 fps | 96.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 50,952 psi | 84% | 3035 fps | 96.4% |
| Lovex S062 | <<locked>> | 84% | 53,824 psi | 88% | 2927 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 53,461 psi | 88% | 2949 fps | 99.7% |
| Lovex S070 | <<locked>> | 92% | 54,621 psi | 90% | 2989 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,337 psi | 71% | 2815 fps | 98.3% |
| Norma 203B | <<locked>> | 84% | 54,447 psi | 89% | 2986 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,476 psi | 88% | 3009 fps | 97.9% |
| Norma MRP | <<locked>> | 98% | 51,822 psi | 85% | 3087 fps | 99.1% |
| Norma URP | <<locked>> | 92% | 53,403 psi | 88% | 3012 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 51,750 psi | 85% | 2956 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,140 psi | 84% | 3045 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 92% | 52,402 psi | 86% | 3015 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,527 psi | 75% | 2917 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,811 psi | 60% | 1906 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 52,678 psi | 86% | 2940 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 52,576 psi | 86% | 3048 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,723 psi | 90% | 3054 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,345 psi | 88% | 3084 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,872 psi | 69% | 2930 fps | 97.2% |
| Rottweil R 902 | <<locked>> | 82% | 52,417 psi | 86% | 2890 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 52,112 psi | 86% | 2933 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,056 psi | 89% | 2986 fps | 97% |
| Rottweil R 905 | <<locked>> | 98% | 54,317 psi | 89% | 3045 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 51,793 psi | 85% | 2920 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 53,461 psi | 88% | 2949 fps | 99.7% |
| Shooters World Precision | <<locked>> | 84% | 53,824 psi | 88% | 2927 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,621 psi | 90% | 2989 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,027 psi | 89% | 2999 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,940 psi | 90% | 2969 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 53,635 psi | 88% | 2825 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,084 psi | 87% | 2897 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 53,838 psi | 88% | 3041 fps | 98.3% |
| Somchem S355 | <<locked>> | 86% | 52,272 psi | 86% | 2930 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 52,272 psi | 86% | 2920 fps | 95.8% |
| Somchem S365 | <<locked>> | 94% | 52,547 psi | 86% | 3015 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,013 psi | 90% | 3022 fps | 99% |
| Vihtavuori N135 | <<locked>> | 82% | 52,663 psi | 86% | 2848 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,011 psi | 87% | 2864 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 53,548 psi | 88% | 2904 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 52,156 psi | 86% | 2953 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,763 psi | 83% | 2936 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 84% | 54,679 psi | 90% | 2910 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,708 psi | 90% | 3012 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 51,547 psi | 85% | 3018 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 52,301 psi | 86% | 3074 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 51,764 psi | 85% | 2920 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,476 psi | 88% | 3028 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,483 psi | 73% | 3051 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 51,547 psi | 85% | 2956 fps | 97.7% |
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 2495 | <<locked>> | 80% | 49,777 psi | 82% | 2808 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,037 psi | 79% | 2818 fps | 97.7% |
| Accurate 3100 | <<locked>> | 88% | 34,389 psi | 56% | 2618 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 47,181 psi | 77% | 2815 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,723 psi | 59% | 2667 fps | 97.9% |
| Accurate MAGPRO | <<locked>> | 98% | 50,981 psi | 84% | 3054 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 45,005 psi | 74% | 2795 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 42,844 psi | 70% | 2831 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 96% | 46,673 psi | 77% | 2936 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,835 psi | 82% | 3018 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,324 psi | 74% | 2818 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,501 psi | 80% | 2890 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,201 psi | 58% | 2687 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,958 psi | 66% | 2818 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,482 psi | 70% | 2825 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 42,627 psi | 70% | 2874 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,498 psi | 42% | 2421 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,011 psi | 54% | 2664 fps | 95.7% |
| Alliant Reloder-26 | 68.6 gr | 84% | 31,285 psi | 51% | 2661 fps | 95.9% |
| Bofors RP15 | <<locked>> | 96% | 41,989 psi | 69% | 2861 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 45,556 psi | 75% | 2828 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 42,627 psi | 70% | 2874 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 40,176 psi | 66% | 2694 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 45,963 psi | 75% | 2838 fps | 99.4% |
| Hodgdon H414 | 62.4 gr | 80% | 38,000 psi | 62% | 2723 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 80% | 41,118 psi | 68% | 2749 fps | 95.4% |
| Hodgdon H4831 | <<locked>> | 96% | 50,125 psi | 82% | 2946 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 96% | 49,008 psi | 80% | 2927 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,605 psi | 54% | 2572 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,343 psi | 83% | 2940 fps | 100% |
| Hodgdon Superformance | <<locked>> | 80% | 36,985 psi | 61% | 2730 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,992 psi | 44% | 1663 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,343 psi | 84% | 2904 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,326 psi | 78% | 2828 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,734 psi | 82% | 2861 fps | 98.6% |
| IMR 4350 | <<locked>> | 82% | 38,363 psi | 63% | 2674 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,756 psi | 69% | 2730 fps | 96.8% |
| IMR 4831 | <<locked>> | 80% | 34,490 psi | 57% | 2621 fps | 97.6% |
| IMR 4895 | <<locked>> | 80% | 49,777 psi | 82% | 2920 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 48,718 psi | 80% | 2884 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 98% | 47,616 psi | 78% | 2969 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 47,340 psi | 78% | 2825 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,059 psi | 64% | 2674 fps | 97.5% |
| Lovex S070 | <<locked>> | 80% | 37,173 psi | 61% | 2651 fps | 95.8% |
| Lovex S071 | <<locked>> | 92% | 33,112 psi | 54% | 2589 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 47,877 psi | 79% | 2877 fps | 100% |
| Norma 204 | <<locked>> | 86% | 43,482 psi | 71% | 2825 fps | 95.6% |
| Norma MRP | 69.8 gr | 88% | 36,434 psi | 60% | 2762 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 35,752 psi | 59% | 2667 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 80% | 48,327 psi | 79% | 2900 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 47,688 psi | 78% | 2982 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 34,780 psi | 57% | 2654 fps | 95.7% |
| Ramshot Magnum | <<locked>> | 96% | 39,233 psi | 64% | 2779 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,441 psi | 45% | 1706 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,035 psi | 76% | 2822 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,525 psi | 70% | 2877 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,578 psi | 58% | 2687 fps | 97.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 34,867 psi | 57% | 2697 fps | 96.9% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,827 psi | 64% | 2851 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 49,139 psi | 81% | 2838 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,656 psi | 70% | 2769 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 47,456 psi | 78% | 2871 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 90% | 41,452 psi | 68% | 2805 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 40,176 psi | 66% | 2694 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,059 psi | 64% | 2674 fps | 97.5% |
| Shooters World Precision | <<locked>> | 80% | 47,340 psi | 78% | 2825 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,173 psi | 61% | 2651 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,135 psi | 72% | 2828 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,634 psi | 85% | 2917 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,425 psi | 73% | 2684 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,116 psi | 63% | 2615 fps | 96% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 41,060 psi | 67% | 2799 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 43,250 psi | 71% | 2772 fps | 99.9% |
| Somchem S361 | <<locked>> | 92% | 48,878 psi | 80% | 2861 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 32,271 psi | 53% | 2621 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 39,291 psi | 65% | 2726 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 49,458 psi | 81% | 2802 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,705 psi | 82% | 2815 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,191 psi | 68% | 2700 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,231 psi | 61% | 2671 fps | 98.1% |
| Vihtavuori N165 | <<locked>> | 92% | 38,682 psi | 64% | 2703 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 48,008 psi | 79% | 2808 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,637 psi | 60% | 2671 fps | 97.8% |
| Vihtavuori N555 | <<locked>> | 80% | 27,847 psi | 46% | 2497 fps | 95.5% |
| Vihtavuori N560 | <<locked>> | 96% | 48,733 psi | 80% | 3009 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,463 psi | 60% | 2638 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 38,000 psi | 62% | 2723 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,556 psi | 42% | 2503 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 92% | 41,568 psi | 68% | 2769 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 96 powders for .300 Blaser Mag. loaded with the .308 | 168gr | Barnes TAC-X. Alliant Reloder-26 delivers the highest muzzle velocity at 3,136 fps; across all powders the maximum-charge window runs from 1,860 fps to 3,136 fps. Accurate 3100 gives the best case fill at 100 %, and 96 of the 96 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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, Norma MRP, Hodgdon H414 rank at the top here: for .300 Blaser Mag. with the .308 | 168gr | Barnes TAC-X they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.