Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 175gr | Barnes LRX BT bullet and 92 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 Alliant Reloder-17.
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% | 52,823 psi | 87% | 2789 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,882 psi | 90% | 2867 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,895 psi | 85% | 2904 fps | 99.6% |
| Accurate 4064 | <<locked>> | 84% | 53,258 psi | 87% | 2844 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,346 psi | 89% | 2959 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 54,172 psi | 89% | 3048 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 86% | 54,128 psi | 89% | 2884 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 52,054 psi | 85% | 2949 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,214 psi | 87% | 2995 fps | 97% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,084 psi | 87% | 3005 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,679 psi | 90% | 2907 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,998 psi | 90% | 2930 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 51,880 psi | 85% | 2966 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 52,881 psi | 87% | 2986 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,940 psi | 90% | 2992 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,851 psi | 85% | 2992 fps | 98.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,849 psi | 80% | 2923 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,525 psi | 70% | 2844 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 52,228 psi | 86% | 3061 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,485 psi | 78% | 2910 fps | 97.2% |
| Bofors RP3 | <<locked>> | 84% | 51,924 psi | 85% | 2871 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,851 psi | 85% | 2992 fps | 98.2% |
| Bofors RP7 | <<locked>> | 90% | 55,071 psi | 90% | 2910 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 52,301 psi | 86% | 2884 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 53,113 psi | 87% | 2959 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 53,040 psi | 87% | 2917 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 98% | 53,388 psi | 88% | 2940 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,170 psi | 86% | 2920 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 52,054 psi | 85% | 2887 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 53,664 psi | 88% | 2923 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 41,640 psi | 68% | 2871 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 90% | 53,243 psi | 87% | 2995 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,187 psi | 59% | 1811 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,462 psi | 89% | 2887 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,621 psi | 88% | 2867 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 52,765 psi | 87% | 2848 fps | 99.1% |
| IMR 4350 | <<locked>> | 92% | 52,591 psi | 86% | 2890 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 53,272 psi | 87% | 2884 fps | 99.1% |
| IMR 4831 | <<locked>> | 94% | 54,868 psi | 90% | 2949 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 52,837 psi | 87% | 2904 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 51,721 psi | 85% | 2874 fps | 96.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 50,531 psi | 83% | 2963 fps | 96.5% |
| Lovex S062 | <<locked>> | 84% | 53,548 psi | 88% | 2858 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 53,330 psi | 88% | 2881 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 54,375 psi | 89% | 2920 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,873 psi | 70% | 2746 fps | 98.4% |
| Norma 201 | <<locked>> | 82% | 54,824 psi | 90% | 2867 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,288 psi | 89% | 2917 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,243 psi | 87% | 2943 fps | 98% |
| Norma MRP | <<locked>> | 98% | 51,459 psi | 84% | 3018 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 53,127 psi | 87% | 2943 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,085 psi | 90% | 2943 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 50,865 psi | 84% | 2979 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 92% | 52,156 psi | 86% | 2946 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,165 psi | 74% | 2851 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,825 psi | 60% | 1854 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 52,504 psi | 86% | 2874 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 52,243 psi | 86% | 2976 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,259 psi | 89% | 2982 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,026 psi | 87% | 3015 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,452 psi | 68% | 2861 fps | 97.4% |
| Rottweil R 902 | <<locked>> | 82% | 52,272 psi | 86% | 2822 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 52,011 psi | 85% | 2867 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 53,766 psi | 88% | 2920 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 98% | 53,940 psi | 89% | 2976 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 90% | 55,071 psi | 90% | 2910 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 53,330 psi | 88% | 2881 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 53,548 psi | 88% | 2858 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,375 psi | 89% | 2920 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 53,679 psi | 88% | 2927 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,853 psi | 90% | 2900 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 53,359 psi | 88% | 2756 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 52,866 psi | 87% | 2831 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 53,461 psi | 88% | 2972 fps | 98.4% |
| Somchem S355 | <<locked>> | 86% | 52,156 psi | 86% | 2864 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 51,866 psi | 85% | 2854 fps | 96% |
| Somchem S365 | <<locked>> | 94% | 52,156 psi | 86% | 2943 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,476 psi | 89% | 2949 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 82% | 52,620 psi | 86% | 2782 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 52,939 psi | 87% | 2799 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 53,359 psi | 88% | 2838 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 51,880 psi | 85% | 2884 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,328 psi | 83% | 2867 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 84% | 54,404 psi | 89% | 2841 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,346 psi | 89% | 2943 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,752 psi | 90% | 3002 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 51,953 psi | 85% | 3009 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 51,401 psi | 84% | 2851 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,345 psi | 88% | 2963 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,034 psi | 72% | 2982 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,969 psi | 90% | 2910 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,926 psi | 90% | 2946 fps | 98.4% |
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% | 49,516 psi | 81% | 2743 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,921 psi | 79% | 2753 fps | 97.8% |
| Accurate 3100 | <<locked>> | 86% | 31,850 psi | 52% | 2503 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 46,949 psi | 77% | 2749 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,592 psi | 58% | 2612 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 98% | 50,488 psi | 83% | 2986 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 44,802 psi | 74% | 2730 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 42,583 psi | 70% | 2769 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 96% | 46,340 psi | 76% | 2867 fps | 95.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,559 psi | 81% | 2946 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,150 psi | 74% | 2753 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,385 psi | 79% | 2822 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,998 psi | 57% | 2625 fps | 98.2% |
| Alliant Reloder-17 | 61.5 gr | 80% | 39,639 psi | 65% | 2753 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,250 psi | 69% | 2762 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 39,566 psi | 65% | 2749 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,367 psi | 42% | 2369 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 92% | 32,866 psi | 54% | 2605 fps | 96% |
| Alliant Reloder-26 | 66.2 gr | 84% | 31,067 psi | 51% | 2602 fps | 96.1% |
| Bofors RP15 | <<locked>> | 96% | 41,597 psi | 68% | 2795 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 45,266 psi | 74% | 2762 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 39,566 psi | 65% | 2749 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 40,001 psi | 66% | 2631 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 80% | 45,701 psi | 75% | 2772 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 37,797 psi | 62% | 2661 fps | 96.1% |
| Hodgdon H4350 | <<locked>> | 80% | 40,843 psi | 67% | 2684 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 96% | 49,821 psi | 82% | 2881 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 96% | 48,660 psi | 80% | 2861 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,401 psi | 53% | 2513 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,169 psi | 82% | 2871 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 38,914 psi | 64% | 2802 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 36,709 psi | 60% | 2667 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,035 psi | 44% | 1617 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,227 psi | 84% | 2838 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,123 psi | 77% | 2762 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,458 psi | 81% | 2792 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 38,174 psi | 63% | 2612 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,582 psi | 68% | 2667 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 34,374 psi | 56% | 2566 fps | 97.8% |
| IMR 4895 | <<locked>> | 80% | 49,676 psi | 82% | 2851 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 48,457 psi | 80% | 2818 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 98% | 47,384 psi | 78% | 2904 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 47,326 psi | 78% | 2759 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,870 psi | 64% | 2612 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 37,043 psi | 61% | 2589 fps | 96.1% |
| Lovex S071 | <<locked>> | 92% | 32,938 psi | 54% | 2530 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 51,517 psi | 85% | 2818 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,732 psi | 78% | 2808 fps | 100% |
| Norma 204 | <<locked>> | 86% | 43,163 psi | 71% | 2759 fps | 95.7% |
| Norma MRP | <<locked>> | 88% | 36,085 psi | 59% | 2700 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 35,592 psi | 58% | 2608 fps | 98% |
| Ramshot Big Game | <<locked>> | 80% | 48,008 psi | 79% | 2831 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 47,123 psi | 77% | 2910 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 34,592 psi | 57% | 2595 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 96% | 38,943 psi | 64% | 2717 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,340 psi | 45% | 1654 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,890 psi | 75% | 2756 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,206 psi | 69% | 2808 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,462 psi | 58% | 2628 fps | 97.8% |
| ReloadSwiss RS 70 | 62.5 gr | 80% | 34,621 psi | 57% | 2635 fps | 97.1% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,551 psi | 63% | 2792 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 80% | 48,878 psi | 80% | 2769 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,511 psi | 70% | 2707 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 47,210 psi | 78% | 2805 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 90% | 41,162 psi | 68% | 2743 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 40,001 psi | 66% | 2631 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,870 psi | 64% | 2612 fps | 97.7% |
| Shooters World Precision | <<locked>> | 80% | 47,326 psi | 78% | 2759 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,043 psi | 61% | 2589 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,918 psi | 72% | 2766 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,430 psi | 84% | 2851 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,295 psi | 73% | 2618 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,014 psi | 62% | 2556 fps | 96.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 40,770 psi | 67% | 2736 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 43,047 psi | 71% | 2707 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 48,588 psi | 80% | 2795 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 31,981 psi | 53% | 2559 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 39,001 psi | 64% | 2664 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 49,342 psi | 81% | 2736 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,530 psi | 81% | 2746 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,017 psi | 67% | 2635 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,130 psi | 61% | 2612 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 38,537 psi | 63% | 2644 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 47,761 psi | 78% | 2743 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,419 psi | 60% | 2608 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 27,688 psi | 45% | 2441 fps | 95.8% |
| Vihtavuori N560 | <<locked>> | 96% | 48,312 psi | 79% | 2940 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,274 psi | 60% | 2579 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 37,797 psi | 62% | 2661 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 82% | 23,801 psi | 39% | 2385 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,213 psi | 84% | 2854 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 41,321 psi | 68% | 2710 fps | 95.4% |
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 92 powders for .300 Blaser Mag. loaded with the .308 | 175gr | Barnes LRX BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,811 fps to 3,061 fps. Accurate 3100 gives the best case fill at 100 %, and 92 of the 92 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 175.0 gr projectile in 0.308" calls for a 1:10.5 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. ReloadSwiss RS 70, Alliant Reloder-26, Alliant Reloder-17 rank at the top here: for .300 Blaser Mag. with the .308 | 175gr | Barnes LRX 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.