Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 180gr | Sierra Pro-Hunter bullet and 74 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 ADI AR 2213.
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 3100 | <<locked>> | 96% | 53,084 psi | 87% | 2900 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 54,998 psi | 90% | 2943 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,418 psi | 89% | 3048 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 94% | 51,634 psi | 85% | 2986 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 82% | 53,403 psi | 88% | 2854 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 51,996 psi | 85% | 2933 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 96% | 53,403 psi | 88% | 2992 fps | 98% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,425 psi | 73% | 2812 fps | 96% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,392 psi | 65% | 2769 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,331 psi | 89% | 2877 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 52,054 psi | 85% | 2943 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 52,968 psi | 87% | 2959 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,056 psi | 90% | 2979 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 52,997 psi | 87% | 2989 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 98% | 53,693 psi | 88% | 2966 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,690 psi | 82% | 2963 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,012 psi | 89% | 3058 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 51,996 psi | 85% | 2972 fps | 98.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,542 psi | 75% | 2887 fps | 97% |
| Bofors RP5 | <<locked>> | 96% | 52,997 psi | 87% | 2989 fps | 99% |
| Bofors RP7 | <<locked>> | 86% | 54,433 psi | 89% | 2887 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,052 psi | 81% | 2907 fps | 97.9% |
| Hodgdon H414 | <<locked>> | 86% | 53,272 psi | 87% | 2940 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 84% | 52,634 psi | 86% | 2897 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 94% | 53,316 psi | 88% | 2930 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,475 psi | 86% | 2913 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 52,475 psi | 86% | 2867 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,530 psi | 80% | 3015 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 86% | 53,171 psi | 87% | 2972 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,738 psi | 60% | 1827 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 52,373 psi | 86% | 2874 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 52,678 psi | 86% | 2861 fps | 99.5% |
| IMR 4831 | <<locked>> | 88% | 51,822 psi | 85% | 2881 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,737 psi | 90% | 2917 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 98% | 54,679 psi | 90% | 3028 fps | 98.3% |
| Lovex S065 | <<locked>> | 86% | 53,055 psi | 87% | 2861 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,404 psi | 89% | 2904 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,662 psi | 83% | 2861 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 52,852 psi | 87% | 2923 fps | 98.6% |
| Norma MRP | <<locked>> | 94% | 52,533 psi | 86% | 3012 fps | 99.7% |
| Norma URP | <<locked>> | 88% | 53,476 psi | 88% | 2927 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,114 psi | 90% | 3045 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 52,170 psi | 86% | 2927 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,214 psi | 87% | 2979 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,463 psi | 62% | 1870 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 52,533 psi | 86% | 2949 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,766 psi | 90% | 2966 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 52,939 psi | 87% | 2989 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,950 psi | 80% | 3015 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 82% | 52,112 psi | 86% | 2841 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 53,606 psi | 88% | 2907 fps | 98% |
| Rottweil R 905 | <<locked>> | 94% | 54,592 psi | 90% | 2969 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 86% | 54,433 psi | 89% | 2887 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,055 psi | 87% | 2861 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,404 psi | 89% | 2904 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,359 psi | 88% | 2900 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,417 psi | 86% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 52,272 psi | 86% | 2808 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,128 psi | 89% | 2966 fps | 99.1% |
| Somchem S355 | <<locked>> | 82% | 51,996 psi | 85% | 2838 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 51,619 psi | 85% | 2841 fps | 96.9% |
| Somchem S365 | <<locked>> | 90% | 53,432 psi | 88% | 2930 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 51,547 psi | 85% | 2887 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 84% | 52,924 psi | 87% | 2808 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 51,953 psi | 85% | 2867 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,447 psi | 89% | 2917 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 88% | 54,578 psi | 90% | 2923 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 52,794 psi | 87% | 2943 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 52,620 psi | 86% | 3002 fps | 97.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,040 psi | 85% | 2976 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,868 psi | 90% | 2877 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,272 psi | 87% | 2940 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,041 psi | 89% | 3097 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 51,300 psi | 84% | 2877 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 3100 | <<locked>> | 80% | 30,937 psi | 51% | 2454 fps | 95.5% |
| Accurate 4350 | <<locked>> | 80% | 41,785 psi | 69% | 2717 fps | 99.7% |
| Accurate High Country | <<locked>> | 86% | 41,031 psi | 67% | 2792 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 92% | 48,080 psi | 79% | 2923 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 50,082 psi | 82% | 2802 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,016 psi | 66% | 2700 fps | 95.9% |
| ADI AR 2213 | 72.4 gr | 90% | 43,555 psi | 72% | 2802 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 98% | 41,742 psi | 69% | 2753 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 96% | 34,664 psi | 57% | 2644 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,155 psi | 84% | 2828 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,132 psi | 66% | 2723 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,050 psi | 76% | 2844 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,391 psi | 61% | 2638 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 86% | 37,811 psi | 62% | 2690 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,747 psi | 49% | 2484 fps | 98.6% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,631 psi | 49% | 2497 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,111 psi | 53% | 2608 fps | 97.5% |
| Bofors RP15 | <<locked>> | 88% | 37,449 psi | 61% | 2680 fps | 95.1% |
| Bofors RP30 | <<locked>> | 96% | 39,813 psi | 65% | 2766 fps | 95.2% |
| Bofors RP5 | <<locked>> | 86% | 37,811 psi | 62% | 2690 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 45,078 psi | 74% | 2723 fps | 98.2% |
| Hodgdon H1000 | <<locked>> | 94% | 40,089 psi | 66% | 2720 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 43,627 psi | 72% | 2766 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 80% | 46,325 psi | 76% | 2782 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 90% | 46,630 psi | 77% | 2812 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 90% | 45,687 psi | 75% | 2792 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,811 psi | 62% | 2612 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,376 psi | 61% | 2753 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 42,583 psi | 70% | 2779 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,586 psi | 45% | 1634 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,611 psi | 67% | 2651 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,427 psi | 76% | 2749 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 39,958 psi | 66% | 2667 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,513 psi | 75% | 2753 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 90% | 41,843 psi | 69% | 2779 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 44,048 psi | 72% | 2703 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 42,337 psi | 70% | 2687 fps | 98.3% |
| Lovex S071 | <<locked>> | 84% | 30,284 psi | 50% | 2434 fps | 95.2% |
| Norma 204 | <<locked>> | 80% | 40,393 psi | 66% | 2684 fps | 95.9% |
| Norma MRP | 68.1 gr | 82% | 34,461 psi | 57% | 2635 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 41,220 psi | 68% | 2707 fps | 99.5% |
| Ramshot Grand | <<locked>> | 90% | 41,379 psi | 68% | 2782 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 40,103 psi | 66% | 2700 fps | 98.4% |
| Ramshot Magnum | <<locked>> | 90% | 36,898 psi | 61% | 2661 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,137 psi | 46% | 1673 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,849 psi | 80% | 2894 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,524 psi | 68% | 2733 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,914 psi | 66% | 2746 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,316 psi | 56% | 2671 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 48,762 psi | 80% | 2789 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 41,466 psi | 68% | 2677 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 82% | 36,608 psi | 60% | 2621 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 45,078 psi | 74% | 2723 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,048 psi | 72% | 2703 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 80% | 42,337 psi | 70% | 2687 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,038 psi | 82% | 2848 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,313 psi | 81% | 2674 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,018 psi | 71% | 2644 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,812 psi | 64% | 2674 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 48,762 psi | 80% | 2785 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,179 psi | 74% | 2723 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 37,840 psi | 62% | 2664 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,853 psi | 57% | 2549 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 46,630 psi | 77% | 2710 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,627 psi | 70% | 2703 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 36,724 psi | 60% | 2585 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 42,076 psi | 69% | 2707 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 33,170 psi | 54% | 2559 fps | 98.5% |
| Vihtavuori N560 | 74.8 gr | 90% | 45,905 psi | 75% | 2877 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 94% | 42,438 psi | 70% | 2795 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,568 psi | 68% | 2664 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,627 psi | 72% | 2766 fps | 98.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,382 psi | 43% | 2477 fps | 98.3% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,914 psi | 64% | 2641 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 74 powders for .300 Blaser Mag. loaded with the .308 | 180gr | Sierra Pro-Hunter. Winchester StaBALL HD delivers the highest muzzle velocity at 3,097 fps; across all powders the maximum-charge window runs from 1,827 fps to 3,097 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 1:16.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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, ADI AR 2213 rank at the top here: for .300 Blaser Mag. with the .308 | 180gr | Sierra Pro-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.