Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 150gr | Frontier PH HPFB bullet and 90 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 and Alliant Reloder-26.
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>> | 84% | 55,085 psi | 90% | 3045 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,185 psi | 87% | 3048 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,111 psi | 82% | 3077 fps | 98.7% |
| Accurate 4064 | <<locked>> | 84% | 51,953 psi | 85% | 3048 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 52,388 psi | 86% | 3146 fps | 99.8% |
| Accurate High Countryᴾ | <<locked>> | 100% | 54,824 psi | 90% | 3291 fps | 96.5% |
| ADI AR 2206H | <<locked>> | 82% | 54,650 psi | 90% | 3130 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 52,417 psi | 86% | 3077 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 53,592 psi | 88% | 3182 fps | 97% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,853 psi | 90% | 3261 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 53,476 psi | 88% | 3176 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 52,997 psi | 87% | 3104 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,171 psi | 87% | 3123 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,171 psi | 87% | 3209 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,273 psi | 89% | 3235 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 52,721 psi | 87% | 3166 fps | 96.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,777 psi | 82% | 3159 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,978 psi | 77% | 3100 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,220 psi | 68% | 3002 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,911 psi | 89% | 3307 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,476 psi | 89% | 3143 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 53,635 psi | 88% | 3117 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,777 psi | 82% | 3159 fps | 96.5% |
| Bofors RP7 | <<locked>> | 90% | 53,359 psi | 88% | 3094 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 86% | 54,128 psi | 89% | 3133 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 54,636 psi | 90% | 3196 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 54,781 psi | 90% | 3156 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 53,258 psi | 87% | 3123 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 51,677 psi | 85% | 3117 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,911 psi | 90% | 3235 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,056 psi | 59% | 1972 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 52,881 psi | 87% | 3087 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 51,837 psi | 85% | 3058 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,679 psi | 90% | 3094 fps | 98.5% |
| IMR 4350 | <<locked>> | 94% | 54,070 psi | 89% | 3123 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,114 psi | 90% | 3127 fps | 98.5% |
| IMR 4831 | <<locked>> | 94% | 52,765 psi | 87% | 3133 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 54,520 psi | 90% | 3156 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,839 psi | 90% | 3100 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 53,534 psi | 88% | 3048 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 52,156 psi | 86% | 3058 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,940 psi | 90% | 3123 fps | 99.4% |
| Lovex S070 | <<locked>> | 92% | 52,808 psi | 87% | 3107 fps | 98.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,568 psi | 68% | 2913 fps | 96.9% |
| Norma 201 | <<locked>> | 82% | 53,403 psi | 88% | 3071 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,940 psi | 89% | 3068 fps | 100% |
| Norma 203B | <<locked>> | 84% | 52,475 psi | 86% | 3110 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,824 psi | 90% | 3179 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 53,026 psi | 87% | 3255 fps | 98.5% |
| Norma URP | <<locked>> | 94% | 54,665 psi | 90% | 3186 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 53,156 psi | 87% | 3133 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 53,534 psi | 88% | 3182 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,651 psi | 60% | 2018 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,317 psi | 89% | 3114 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,012 psi | 89% | 3199 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 53,896 psi | 88% | 3232 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 52,141 psi | 86% | 3166 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,650 psi | 90% | 3255 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 54,041 psi | 89% | 3071 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,708 psi | 88% | 3114 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 51,735 psi | 85% | 3150 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 90% | 53,359 psi | 88% | 3094 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,940 psi | 90% | 3123 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,839 psi | 90% | 3100 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 52,156 psi | 86% | 3058 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 52,808 psi | 87% | 3107 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 51,851 psi | 85% | 3120 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,214 psi | 87% | 3097 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,259 psi | 89% | 2999 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,085 psi | 90% | 2999 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,839 psi | 90% | 3068 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,969 psi | 90% | 3205 fps | 97.5% |
| Somchem S335 | <<locked>> | 82% | 54,012 psi | 89% | 2999 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,911 psi | 89% | 3114 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 53,693 psi | 88% | 3192 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 52,750 psi | 87% | 3130 fps | 97.8% |
| Vihtavuori N133 | <<locked>> | 82% | 54,752 psi | 90% | 2982 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,215 psi | 89% | 3031 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,549 psi | 90% | 3045 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,056 psi | 90% | 3084 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 53,461 psi | 88% | 3127 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,472 psi | 80% | 3035 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 84% | 52,982 psi | 87% | 3041 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 52,533 psi | 86% | 3127 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,649 psi | 86% | 3189 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,185 psi | 87% | 3094 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,853 psi | 90% | 3202 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,395 psi | 70% | 3146 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 53,011 psi | 87% | 3100 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,895 psi | 87% | 3117 fps | 96.8% |
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% | 48,443 psi | 80% | 2943 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,543 psi | 76% | 2927 fps | 96.2% |
| Accurate 3100 | <<locked>> | 92% | 38,014 psi | 62% | 2835 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 45,818 psi | 75% | 2943 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,389 psi | 56% | 2769 fps | 96.3% |
| Accurate High Country | <<locked>> | 98% | 50,850 psi | 83% | 3215 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 51,198 psi | 84% | 3071 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,540 psi | 71% | 2910 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 46,963 psi | 77% | 3054 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,616 psi | 78% | 3130 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,963 psi | 77% | 3054 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,743 psi | 72% | 2933 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,775 psi | 77% | 3009 fps | 99.6% |
| Alliant Reloder-16 | 60.6 gr | 80% | 33,968 psi | 56% | 2782 fps | 96.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,334 psi | 63% | 2920 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,369 psi | 76% | 3041 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,688 psi | 77% | 3097 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,108 psi | 46% | 2625 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,260 psi | 60% | 2871 fps | 95.6% |
| Alliant Reloder-26 | 73.6 gr | 88% | 34,795 psi | 57% | 2884 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,053 psi | 84% | 3084 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 43,903 psi | 72% | 2946 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 46,688 psi | 77% | 3097 fps | 95.7% |
| Bofors RP7 | <<locked>> | 82% | 41,481 psi | 68% | 2858 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 44,454 psi | 73% | 2953 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 84% | 41,742 psi | 69% | 2943 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 84% | 44,962 psi | 74% | 2969 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,430 psi | 52% | 2671 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,312 psi | 79% | 3061 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 41,046 psi | 67% | 2956 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,963 psi | 44% | 1765 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,530 psi | 81% | 3028 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,730 psi | 75% | 2946 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,051 psi | 79% | 2972 fps | 97.4% |
| IMR 4350 | <<locked>> | 86% | 42,003 psi | 69% | 2890 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,350 psi | 66% | 2831 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 33,243 psi | 55% | 2720 fps | 96% |
| IMR 4895 | <<locked>> | 80% | 47,964 psi | 79% | 3041 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 51,285 psi | 84% | 3045 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,372 psi | 83% | 2995 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,847 psi | 75% | 2946 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,913 psi | 62% | 2779 fps | 96% |
| Lovex S070 | <<locked>> | 82% | 38,508 psi | 63% | 2812 fps | 95% |
| Lovex S071 | <<locked>> | 96% | 36,376 psi | 60% | 2795 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 50,183 psi | 82% | 3015 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,676 psi | 83% | 3015 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,166 psi | 76% | 2992 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 47,834 psi | 79% | 3048 fps | 95.5% |
| Norma MRP | <<locked>> | 92% | 40,103 psi | 66% | 2986 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 34,360 psi | 56% | 2766 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 46,354 psi | 76% | 3015 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 38,319 psi | 63% | 2874 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,398 psi | 45% | 1808 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,527 psi | 73% | 2930 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,372 psi | 83% | 3133 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,756 psi | 67% | 2989 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,127 psi | 56% | 2782 fps | 95.8% |
| ReloadSwiss RS 70 | 67.9 gr | 82% | 35,926 psi | 59% | 2851 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 47,761 psi | 78% | 2963 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,220 psi | 68% | 2884 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 94% | 45,397 psi | 75% | 3025 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 82% | 41,481 psi | 68% | 2858 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,913 psi | 62% | 2779 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,285 psi | 84% | 3045 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,847 psi | 75% | 2946 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,508 psi | 63% | 2812 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,467 psi | 70% | 2943 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,864 psi | 82% | 3038 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,952 psi | 84% | 2949 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,888 psi | 70% | 2805 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,552 psi | 65% | 2772 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,976 psi | 74% | 3018 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 50,850 psi | 83% | 2949 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,829 psi | 69% | 2887 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 30,995 psi | 51% | 2720 fps | 98.3% |
| Somchem S385 | <<locked>> | 92% | 43,076 psi | 71% | 2943 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 51,445 psi | 84% | 2933 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,659 psi | 78% | 2930 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,979 psi | 79% | 2943 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,784 psi | 65% | 2812 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 35,795 psi | 59% | 2769 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 98% | 45,281 psi | 74% | 2972 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 46,485 psi | 76% | 2933 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,375 psi | 58% | 2769 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 84% | 30,821 psi | 51% | 2710 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,331 psi | 58% | 2743 fps | 98.6% |
| Winchester 760 | <<locked>> | 82% | 39,160 psi | 64% | 2884 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,384 psi | 47% | 2720 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,632 psi | 81% | 3045 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 45,919 psi | 75% | 2989 fps | 95.1% |
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 90 powders for .300 Blaser Mag. loaded with the .308 | 150gr | Frontier PH HPFB. Alliant Reloder-26 delivers the highest muzzle velocity at 3,307 fps; across all powders the maximum-charge window runs from 1,972 fps to 3,307 fps. Accurate 3100 gives the best case fill at 100 %, and 90 of the 90 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 150.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, 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. Alliant Reloder-16, ReloadSwiss RS 70, Alliant Reloder-26 rank at the top here: for .300 Blaser Mag. with the .308 | 150gr | Frontier PH HPFB 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.