Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 165gr | Barnes BND SPIT-FIRE bullet and 85 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.
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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% | 53,403 psi | 88% | 2877 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,810 psi | 90% | 2943 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,228 psi | 86% | 2982 fps | 99.4% |
| Accurate 4064 | <<locked>> | 84% | 53,853 psi | 88% | 2933 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,447 psi | 89% | 3041 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,114 psi | 89% | 2966 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 52,011 psi | 85% | 3022 fps | 97.5% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,214 psi | 87% | 3071 fps | 96.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,055 psi | 87% | 3087 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,723 psi | 90% | 2989 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,071 psi | 90% | 3012 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,056 psi | 90% | 3097 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 52,663 psi | 86% | 3068 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,766 psi | 90% | 3071 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,880 psi | 85% | 3068 fps | 97.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,805 psi | 80% | 3002 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,612 psi | 70% | 2917 fps | 98.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 52,286 psi | 86% | 3143 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,384 psi | 78% | 2982 fps | 96.6% |
| Bofors RP3 | <<locked>> | 84% | 51,909 psi | 85% | 2949 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,880 psi | 85% | 3068 fps | 97.7% |
| Bofors RP7 | <<locked>> | 90% | 54,998 psi | 90% | 2986 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 84% | 52,402 psi | 86% | 2966 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 52,982 psi | 87% | 3035 fps | 99% |
| Hodgdon H4350 | <<locked>> | 88% | 53,040 psi | 87% | 2992 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 51,996 psi | 85% | 2966 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 53,548 psi | 88% | 3005 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 53,011 psi | 87% | 3071 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,347 psi | 60% | 1873 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,534 psi | 90% | 2969 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,476 psi | 88% | 2946 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 52,837 psi | 87% | 2927 fps | 98.8% |
| IMR 4350 | <<locked>> | 92% | 52,547 psi | 86% | 2966 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 53,388 psi | 88% | 2963 fps | 98.8% |
| IMR 4831 | <<locked>> | 94% | 54,795 psi | 90% | 3031 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 53,026 psi | 87% | 2989 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,114 psi | 90% | 3009 fps | 96.4% |
| Lovex S062 | <<locked>> | 84% | 53,621 psi | 88% | 2940 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 53,345 psi | 88% | 2959 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 54,505 psi | 89% | 3002 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,294 psi | 71% | 2825 fps | 98.1% |
| Norma 201 | <<locked>> | 82% | 54,969 psi | 90% | 2953 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,360 psi | 89% | 2999 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,011 psi | 87% | 3015 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 55,071 psi | 90% | 3156 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 53,127 psi | 87% | 3022 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,071 psi | 90% | 3025 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 50,792 psi | 83% | 3051 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 92% | 51,909 psi | 85% | 3018 fps | 99.3% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,165 psi | 74% | 2917 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,825 psi | 60% | 1913 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 52,489 psi | 86% | 2949 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 52,141 psi | 86% | 3061 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,273 psi | 89% | 3061 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 52,881 psi | 87% | 3091 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,713 psi | 68% | 2930 fps | 96.7% |
| Rottweil R 902 | <<locked>> | 82% | 52,460 psi | 86% | 2904 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 52,214 psi | 86% | 2949 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 53,577 psi | 88% | 2992 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 98% | 53,853 psi | 88% | 3051 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 54,998 psi | 90% | 2986 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 53,345 psi | 88% | 2959 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 53,621 psi | 88% | 2940 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,505 psi | 89% | 3002 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 53,708 psi | 88% | 3009 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,853 psi | 90% | 2982 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 53,476 psi | 88% | 2838 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,011 psi | 87% | 2907 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 53,374 psi | 88% | 3045 fps | 97.9% |
| Somchem S355 | <<locked>> | 86% | 52,301 psi | 86% | 2946 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 52,257 psi | 86% | 3028 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,694 psi | 90% | 3031 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 82% | 52,547 psi | 86% | 2861 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 52,881 psi | 87% | 2877 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 53,345 psi | 88% | 2917 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 51,895 psi | 85% | 2966 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,415 psi | 83% | 2943 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 84% | 54,418 psi | 89% | 2923 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,505 psi | 89% | 3025 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,752 psi | 90% | 3081 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,998 psi | 90% | 2982 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,214 psi | 87% | 3038 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,135 psi | 72% | 3058 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,868 psi | 90% | 2992 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,853 psi | 90% | 3022 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% | 50,183 psi | 82% | 2828 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,095 psi | 79% | 2828 fps | 97.4% |
| Accurate 3100 | <<locked>> | 88% | 34,635 psi | 57% | 2635 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 47,529 psi | 78% | 2835 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,013 psi | 59% | 2687 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 44,918 psi | 74% | 2805 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 90% | 42,728 psi | 70% | 2838 fps | 95% |
| ADI AR 2213 | <<locked>> | 98% | 49,806 psi | 82% | 3005 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,414 psi | 81% | 3025 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,310 psi | 74% | 2831 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,472 psi | 80% | 2904 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,215 psi | 58% | 2697 fps | 97.8% |
| Alliant Reloder-17 | 62.9 gr | 80% | 39,813 psi | 65% | 2828 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,351 psi | 70% | 2835 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 94% | 42,380 psi | 70% | 2881 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,831 psi | 42% | 2438 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,185 psi | 54% | 2674 fps | 95.3% |
| Alliant Reloder-26 | 67.7 gr | 84% | 31,459 psi | 52% | 2674 fps | 95.5% |
| Bofors RP15 | <<locked>> | 98% | 44,614 psi | 73% | 2927 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 45,527 psi | 75% | 2841 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 42,380 psi | 70% | 2881 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 40,306 psi | 66% | 2707 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 46,035 psi | 76% | 2854 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 37,898 psi | 62% | 2733 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 82% | 43,642 psi | 72% | 2815 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,721 psi | 54% | 2589 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,995 psi | 82% | 2949 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 39,610 psi | 65% | 2802 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,079 psi | 44% | 1673 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,184 psi | 84% | 2917 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,239 psi | 78% | 2841 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,400 psi | 81% | 2867 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 40,785 psi | 67% | 2740 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,524 psi | 68% | 2736 fps | 96.5% |
| IMR 4831 | <<locked>> | 80% | 34,664 psi | 57% | 2638 fps | 97.4% |
| IMR 4895 | <<locked>> | 80% | 49,734 psi | 82% | 2933 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 51,750 psi | 85% | 2949 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 47,384 psi | 78% | 2838 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,218 psi | 64% | 2687 fps | 97.3% |
| Lovex S070 | <<locked>> | 80% | 37,376 psi | 61% | 2664 fps | 95.5% |
| Lovex S071 | <<locked>> | 92% | 33,402 psi | 55% | 2605 fps | 95% |
| Norma 201 | <<locked>> | 80% | 51,808 psi | 85% | 2904 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,848 psi | 79% | 2890 fps | 100% |
| Norma 204 | <<locked>> | 86% | 43,323 psi | 71% | 2831 fps | 95.1% |
| Norma MRP | <<locked>> | 90% | 38,943 psi | 64% | 2838 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 35,824 psi | 59% | 2680 fps | 97.5% |
| Ramshot Big Game | <<locked>> | 80% | 48,051 psi | 79% | 2910 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 47,239 psi | 78% | 2982 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 34,737 psi | 57% | 2664 fps | 95.3% |
| Ramshot Magnum | <<locked>> | 98% | 42,018 psi | 69% | 2851 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,557 psi | 45% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,050 psi | 76% | 2835 fps | 98.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,293 psi | 69% | 2887 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,607 psi | 58% | 2700 fps | 97.3% |
| ReloadSwiss RS 70 | 63.9 gr | 80% | 34,867 psi | 57% | 2707 fps | 96.5% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,769 psi | 64% | 2854 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 49,240 psi | 81% | 2854 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,830 psi | 70% | 2785 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 47,239 psi | 78% | 2877 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 90% | 41,176 psi | 68% | 2812 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 40,306 psi | 66% | 2707 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,218 psi | 64% | 2687 fps | 97.3% |
| Shooters World Precision | <<locked>> | 80% | 47,384 psi | 78% | 2838 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,376 psi | 61% | 2664 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,888 psi | 72% | 2841 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,314 psi | 84% | 2927 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,309 psi | 73% | 2697 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,334 psi | 63% | 2628 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,613 psi | 72% | 2867 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 43,337 psi | 71% | 2785 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 32,242 psi | 53% | 2635 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 39,305 psi | 65% | 2740 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 49,385 psi | 81% | 2815 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,588 psi | 81% | 2828 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,278 psi | 68% | 2713 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,289 psi | 61% | 2684 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 94% | 41,321 psi | 68% | 2769 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 48,008 psi | 79% | 2825 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,782 psi | 60% | 2684 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 28,137 psi | 46% | 2520 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,434 psi | 60% | 2651 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 38,043 psi | 62% | 2736 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,875 psi | 42% | 2523 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,300 psi | 84% | 2933 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,469 psi | 73% | 2838 fps | 95.7% |
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 | 165gr | Barnes BND SPIT-FIRE. Norma MRP delivers the highest muzzle velocity at 3,156 fps; across all powders the maximum-charge window runs from 1,873 fps to 3,156 fps. Accurate 3100 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 165.0 gr projectile in 0.308" calls for a 1:11.0 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, Alliant Reloder-17 rank at the top here: for .300 Blaser Mag. with the .308 | 165gr | Barnes BND SPIT-FIRE 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.