Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 175gr | Berger VLD Target bullet and 85 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 Vihtavuori N560.
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% | 53,809 psi | 88% | 2861 fps | 98.9% |
| Accurate 3100 | <<locked>> | 98% | 52,243 psi | 86% | 2910 fps | 99.7% |
| Accurate 4064 | <<locked>> | 82% | 53,490 psi | 88% | 2848 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,143 psi | 89% | 2959 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 53,200 psi | 87% | 3054 fps | 97.7% |
| Accurate MAGPRO | <<locked>> | 98% | 54,259 psi | 89% | 3054 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 53,388 psi | 88% | 2881 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 51,692 psi | 85% | 2949 fps | 98.1% |
| ADI AR 2213 | <<locked>> | 98% | 52,779 psi | 87% | 2999 fps | 97.2% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 51,648 psi | 85% | 2943 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,172 psi | 89% | 2904 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,259 psi | 89% | 2923 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,868 psi | 90% | 3015 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 52,460 psi | 86% | 2982 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,534 psi | 90% | 2992 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 51,924 psi | 85% | 2995 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,373 psi | 86% | 2979 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,600 psi | 75% | 2913 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 52,359 psi | 86% | 3064 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,923 psi | 84% | 2979 fps | 98.1% |
| Bofors RP3 | <<locked>> | 82% | 51,503 psi | 85% | 2864 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 51,924 psi | 85% | 2995 fps | 98.4% |
| Bofors RP7 | <<locked>> | 88% | 54,491 psi | 89% | 2910 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,150 psi | 74% | 2841 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 82% | 51,822 psi | 85% | 2881 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 52,620 psi | 86% | 2953 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 86% | 52,489 psi | 86% | 2913 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 96% | 52,808 psi | 87% | 2940 fps | 96.5% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,663 psi | 85% | 2920 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 51,924 psi | 85% | 2887 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,599 psi | 73% | 2949 fps | 97.5% |
| Hodgdon Superformance | <<locked>> | 88% | 52,518 psi | 86% | 2989 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,434 psi | 60% | 1827 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 52,794 psi | 87% | 2861 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 51,982 psi | 85% | 2887 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 86% | 52,663 psi | 86% | 2881 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 54,650 psi | 90% | 2953 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,621 psi | 90% | 2933 fps | 97% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,780 psi | 88% | 3031 fps | 97.5% |
| Lovex S062 | <<locked>> | 82% | 53,214 psi | 87% | 2858 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 52,750 psi | 87% | 2877 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 54,157 psi | 89% | 2923 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,456 psi | 76% | 2815 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 53,563 psi | 88% | 2907 fps | 100% |
| Norma 204 | <<locked>> | 90% | 52,460 psi | 86% | 2936 fps | 98.1% |
| Norma MRP | <<locked>> | 98% | 55,085 psi | 90% | 3081 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 52,968 psi | 87% | 2946 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,389 psi | 89% | 2936 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,230 psi | 89% | 3048 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 90% | 51,605 psi | 85% | 2943 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,515 psi | 80% | 2917 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,144 psi | 61% | 1870 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 51,648 psi | 85% | 2864 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 51,938 psi | 85% | 2976 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,085 psi | 89% | 2982 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 52,489 psi | 86% | 3012 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,686 psi | 73% | 2943 fps | 98.6% |
| Rottweil R 902 | <<locked>> | 82% | 54,955 psi | 90% | 2864 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 51,793 psi | 85% | 2864 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 53,185 psi | 87% | 2917 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 96% | 53,693 psi | 88% | 2976 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 88% | 54,491 psi | 89% | 2910 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 52,750 psi | 87% | 2877 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 53,214 psi | 87% | 2858 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,157 psi | 89% | 2923 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 53,026 psi | 87% | 2920 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 52,634 psi | 86% | 2749 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 52,214 psi | 86% | 2828 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 53,229 psi | 87% | 2972 fps | 98.5% |
| Somchem S355 | <<locked>> | 84% | 51,808 psi | 85% | 2861 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,940 psi | 90% | 2910 fps | 96.9% |
| Somchem S365 | <<locked>> | 92% | 52,185 psi | 86% | 2943 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,288 psi | 89% | 2953 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 86% | 52,953 psi | 87% | 2835 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,911 psi | 90% | 2936 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,722 psi | 88% | 2927 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 82% | 53,751 psi | 88% | 2835 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,085 psi | 89% | 2943 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,926 psi | 90% | 3005 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 51,648 psi | 85% | 3009 fps | 96.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 47,181 psi | 77% | 2913 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,476 psi | 89% | 2900 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 52,852 psi | 87% | 2959 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,776 psi | 78% | 3051 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,534 psi | 90% | 2949 fps | 98.5% |
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% | 50,546 psi | 83% | 2805 fps | 98.5% |
| Accurate 3100 | <<locked>> | 84% | 32,445 psi | 53% | 2516 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 50,183 psi | 82% | 2799 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,406 psi | 63% | 2674 fps | 98.9% |
| Accurate High Country | <<locked>> | 90% | 43,163 psi | 71% | 2864 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 96% | 50,328 psi | 83% | 2986 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 47,282 psi | 78% | 2779 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 39,682 psi | 65% | 2710 fps | 95% |
| ADI AR 2213 | <<locked>> | 94% | 46,108 psi | 76% | 2874 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 39,914 psi | 66% | 2713 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,703 psi | 78% | 2799 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,952 psi | 84% | 2871 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,260 psi | 61% | 2680 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,438 psi | 70% | 2808 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 39,494 psi | 65% | 2707 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 90% | 39,813 psi | 65% | 2759 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,441 psi | 45% | 2438 fps | 97.1% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,067 psi | 51% | 2556 fps | 95.3% |
| Alliant Reloder-26 | 65.2 gr | 80% | 29,312 psi | 48% | 2549 fps | 95.4% |
| Bofors RP15 | <<locked>> | 92% | 39,276 psi | 64% | 2743 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 48,254 psi | 79% | 2815 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 39,813 psi | 65% | 2759 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 42,308 psi | 69% | 2687 fps | 97% |
| Hodgdon H1000 | <<locked>> | 98% | 42,264 psi | 69% | 2782 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 48,428 psi | 80% | 2825 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 40,306 psi | 66% | 2720 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 80% | 43,279 psi | 71% | 2743 fps | 96.5% |
| Hodgdon H4831 | <<locked>> | 94% | 49,472 psi | 81% | 2881 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 94% | 48,385 psi | 79% | 2861 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,983 psi | 57% | 2575 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,247 psi | 64% | 2818 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 39,262 psi | 64% | 2730 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,238 psi | 45% | 1631 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,734 psi | 82% | 2812 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 37,956 psi | 62% | 2612 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,714 psi | 72% | 2717 fps | 97.7% |
| IMR 4831 | <<locked>> | 80% | 36,854 psi | 61% | 2621 fps | 98.6% |
| IMR 4955 Enduron | <<locked>> | 92% | 47,993 psi | 79% | 2818 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 94% | 44,164 psi | 73% | 2848 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 49,951 psi | 82% | 2805 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,263 psi | 68% | 2667 fps | 98.4% |
| Lovex S070 | <<locked>> | 80% | 39,552 psi | 65% | 2648 fps | 97% |
| Lovex S071 | <<locked>> | 88% | 31,604 psi | 52% | 2497 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 50,314 psi | 83% | 2854 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,103 psi | 66% | 2697 fps | 95% |
| Norma MRP | 68 gr | 86% | 36,289 psi | 60% | 2707 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 38,203 psi | 63% | 2667 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 80% | 50,850 psi | 83% | 2881 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 43,772 psi | 72% | 2851 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 36,985 psi | 61% | 2654 fps | 97% |
| Ramshot Magnum | <<locked>> | 94% | 39,001 psi | 64% | 2726 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,775 psi | 46% | 1673 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,530 psi | 80% | 2812 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,049 psi | 74% | 2861 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,159 psi | 63% | 2690 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,999 psi | 61% | 2700 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,201 psi | 59% | 2733 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 51,808 psi | 85% | 2818 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,484 psi | 75% | 2762 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,077 psi | 72% | 2749 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 86% | 38,566 psi | 63% | 2687 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 42,308 psi | 69% | 2687 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,263 psi | 68% | 2667 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 49,951 psi | 82% | 2805 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,552 psi | 65% | 2648 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,528 psi | 76% | 2815 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,470 psi | 76% | 2657 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,451 psi | 66% | 2612 fps | 97.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,828 psi | 67% | 2740 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 45,614 psi | 75% | 2756 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 48,153 psi | 79% | 2795 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 34,635 psi | 57% | 2625 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 36,782 psi | 60% | 2618 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 43,671 psi | 72% | 2687 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,508 psi | 65% | 2664 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 90% | 38,537 psi | 63% | 2648 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 50,328 psi | 83% | 2785 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,972 psi | 64% | 2664 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 30,269 psi | 50% | 2513 fps | 97.1% |
| Vihtavuori N560 | 74.3 gr | 94% | 48,196 psi | 79% | 2943 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 98% | 44,193 psi | 73% | 2854 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,580 psi | 63% | 2631 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 40,509 psi | 67% | 2723 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,250 psi | 40% | 2405 fps | 95.8% |
| Winchester Supreme 780 | <<locked>> | 90% | 41,278 psi | 68% | 2710 fps | 95.6% |
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 | 175gr | Berger VLD Target. Norma MRP delivers the highest muzzle velocity at 3,081 fps; across all powders the maximum-charge window runs from 1,827 fps to 3,081 fps. Alliant Reloder-23 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 175.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, 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, Norma MRP, Vihtavuori N560 rank at the top here: for .300 Blaser Mag. with the .308 | 175gr | Berger VLD Target 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.