Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 150gr | Berger Target FB 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 Hodgdon Superformance.
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% | 52,373 psi | 86% | 3005 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,853 psi | 88% | 3064 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,169 psi | 84% | 3100 fps | 98.9% |
| Accurate 4064 | <<locked>> | 84% | 52,852 psi | 87% | 3064 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,345 psi | 88% | 3166 fps | 99.9% |
| Accurate High Country | <<locked>> | 98% | 52,170 psi | 86% | 3245 fps | 96% |
| ADI AR 2208 | <<locked>> | 86% | 53,156 psi | 87% | 3094 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 54,563 psi | 90% | 3202 fps | 97.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 51,996 psi | 85% | 3215 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,520 psi | 90% | 3199 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,766 psi | 88% | 3120 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,954 psi | 89% | 3143 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,041 psi | 89% | 3225 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 51,576 psi | 85% | 3196 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,751 psi | 88% | 3189 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,792 psi | 83% | 3182 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,022 psi | 79% | 3127 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,843 psi | 69% | 3022 fps | 97.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 51,169 psi | 84% | 3261 fps | 99.8% |
| Bofors RP3 | <<locked>> | 86% | 54,665 psi | 90% | 3140 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,792 psi | 83% | 3182 fps | 96.8% |
| Bofors RP7 | <<locked>> | 90% | 54,215 psi | 89% | 3114 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 86% | 55,085 psi | 90% | 3153 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 51,967 psi | 85% | 3156 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 88% | 52,170 psi | 86% | 3117 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,201 psi | 89% | 3143 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 52,446 psi | 86% | 3133 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 52,025 psi | 85% | 3189 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,114 psi | 59% | 1978 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,461 psi | 88% | 3100 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,649 psi | 86% | 3077 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 51,982 psi | 85% | 3051 fps | 98.2% |
| IMR 4350 | <<locked>> | 94% | 54,926 psi | 90% | 3143 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 52,562 psi | 86% | 3087 fps | 98.2% |
| IMR 4831 | <<locked>> | 94% | 53,664 psi | 88% | 3153 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 52,083 psi | 86% | 3117 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,317 psi | 89% | 3064 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 52,721 psi | 87% | 3071 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 52,373 psi | 86% | 3084 fps | 99.2% |
| Lovex S070 | <<locked>> | 92% | 53,693 psi | 88% | 3123 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,380 psi | 70% | 2933 fps | 97.2% |
| Norma 201 | <<locked>> | 82% | 53,983 psi | 89% | 3084 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,752 psi | 90% | 3084 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,258 psi | 87% | 3127 fps | 100% |
| Norma 204 | <<locked>> | 92% | 52,025 psi | 85% | 3133 fps | 96.6% |
| Norma MRPᴾ | <<locked>> | 100% | 53,969 psi | 89% | 3278 fps | 98.7% |
| Norma URP | <<locked>> | 92% | 52,199 psi | 86% | 3150 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 54,099 psi | 89% | 3153 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 54,607 psi | 90% | 3205 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,709 psi | 60% | 2024 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,940 psi | 90% | 3130 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,868 psi | 90% | 3215 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,882 psi | 90% | 3251 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 53,069 psi | 87% | 3182 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 51,808 psi | 85% | 3212 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 54,897 psi | 90% | 3087 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,520 psi | 90% | 3130 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 52,808 psi | 87% | 3169 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 90% | 54,215 psi | 89% | 3114 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 52,373 psi | 86% | 3084 fps | 99.2% |
| Shooters World Precision | <<locked>> | 84% | 52,721 psi | 87% | 3071 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,693 psi | 88% | 3123 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 52,605 psi | 86% | 3136 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,940 psi | 89% | 3114 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,911 psi | 90% | 3015 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 52,475 psi | 86% | 2966 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 52,098 psi | 86% | 3028 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 52,330 psi | 86% | 3163 fps | 97.1% |
| Somchem S335 | <<locked>> | 82% | 54,621 psi | 90% | 3009 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,665 psi | 90% | 3127 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,694 psi | 90% | 3209 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,548 psi | 88% | 3146 fps | 98.1% |
| Vihtavuori N135 | <<locked>> | 84% | 54,882 psi | 90% | 3045 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 52,040 psi | 85% | 3012 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 52,431 psi | 86% | 3045 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,375 psi | 89% | 3143 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,429 psi | 81% | 3058 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 84% | 53,664 psi | 88% | 3054 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,388 psi | 88% | 3146 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,534 psi | 88% | 3205 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,157 psi | 89% | 3110 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 52,185 psi | 86% | 3159 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,178 psi | 71% | 3169 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 53,998 psi | 89% | 3120 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,867 psi | 88% | 3140 fps | 97.2% |
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% | 49,110 psi | 81% | 2956 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,195 psi | 77% | 2943 fps | 96.5% |
| Accurate 3100 | <<locked>> | 90% | 36,201 psi | 59% | 2792 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 46,499 psi | 76% | 2959 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,114 psi | 58% | 2789 fps | 96.7% |
| Accurate High Country | <<locked>> | 96% | 48,486 psi | 80% | 3173 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 44,077 psi | 72% | 2927 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 47,761 psi | 78% | 3074 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,399 psi | 79% | 3150 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 44,889 psi | 74% | 3015 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,338 psi | 73% | 2949 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,587 psi | 78% | 3025 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,461 psi | 57% | 2799 fps | 96.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,001 psi | 64% | 2940 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 47,137 psi | 77% | 3064 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 96% | 44,382 psi | 73% | 3051 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,645 psi | 47% | 2644 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,869 psi | 61% | 2894 fps | 96.1% |
| Alliant Reloder-26 | 73 gr | 86% | 33,011 psi | 54% | 2835 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 44,701 psi | 73% | 2963 fps | 99.9% |
| Bofors RP5 | <<locked>> | 96% | 44,382 psi | 73% | 3051 fps | 95% |
| Bofors RP7 | <<locked>> | 82% | 42,134 psi | 69% | 2874 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 45,194 psi | 74% | 2972 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 82% | 39,697 psi | 65% | 2900 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 84% | 45,847 psi | 75% | 2992 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,966 psi | 52% | 2687 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,110 psi | 81% | 3077 fps | 100% |
| Hodgdon Superformance | 73.5 gr | 84% | 41,742 psi | 69% | 2976 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,977 psi | 44% | 1772 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,299 psi | 83% | 3045 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,354 psi | 76% | 2963 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,747 psi | 80% | 2989 fps | 97.6% |
| IMR 4350 | <<locked>> | 86% | 42,612 psi | 70% | 2907 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,843 psi | 67% | 2848 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 33,895 psi | 56% | 2743 fps | 96.3% |
| IMR 4895 | <<locked>> | 80% | 48,762 psi | 80% | 3058 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 51,169 psi | 84% | 3012 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,659 psi | 77% | 2966 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,435 psi | 63% | 2795 fps | 96.3% |
| Lovex S070 | <<locked>> | 82% | 39,146 psi | 64% | 2831 fps | 95.3% |
| Lovex S071 | <<locked>> | 96% | 37,188 psi | 61% | 2815 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 50,792 psi | 83% | 3031 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,300 psi | 84% | 3028 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,934 psi | 77% | 3012 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 48,631 psi | 80% | 3071 fps | 95.8% |
| Norma MRP | <<locked>> | 92% | 40,828 psi | 67% | 3005 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 35,085 psi | 58% | 2785 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 80% | 47,065 psi | 77% | 3031 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 36,492 psi | 60% | 2831 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,412 psi | 45% | 1814 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,194 psi | 74% | 2949 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,039 psi | 84% | 3150 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,466 psi | 68% | 3009 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,809 psi | 57% | 2802 fps | 96.2% |
| ReloadSwiss RS 70 | 67.3 gr | 80% | 34,156 psi | 56% | 2805 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 48,385 psi | 79% | 2979 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,018 psi | 69% | 2904 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 94% | 46,253 psi | 76% | 3045 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 82% | 42,134 psi | 69% | 2874 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,435 psi | 63% | 2795 fps | 96.3% |
| Shooters World Precision | <<locked>> | 80% | 46,659 psi | 77% | 2966 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 39,146 psi | 64% | 2831 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,018 psi | 71% | 2956 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,386 psi | 83% | 3054 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,576 psi | 85% | 2963 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,468 psi | 71% | 2815 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,190 psi | 66% | 2792 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 45,818 psi | 75% | 3041 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 51,459 psi | 84% | 2963 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,409 psi | 70% | 2904 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 31,488 psi | 52% | 2736 fps | 98.6% |
| Somchem S385 | <<locked>> | 90% | 41,046 psi | 67% | 2900 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 48,370 psi | 79% | 2943 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,776 psi | 80% | 2959 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,480 psi | 66% | 2831 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 36,477 psi | 60% | 2789 fps | 96.9% |
| Vihtavuori N165 | <<locked>> | 96% | 43,178 psi | 71% | 2933 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 47,224 psi | 78% | 2949 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,056 psi | 59% | 2789 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 84% | 31,343 psi | 51% | 2726 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,839 psi | 59% | 2756 fps | 98.8% |
| Winchester 760 | <<locked>> | 82% | 39,827 psi | 65% | 2904 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,021 psi | 44% | 2667 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,372 psi | 83% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 46,615 psi | 77% | 3009 fps | 95.5% |
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 | 150gr | Berger Target FB. Norma MRP delivers the highest muzzle velocity at 3,278 fps; across all powders the maximum-charge window runs from 1,978 fps to 3,278 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 59–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, Alliant Reloder-23 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, Hodgdon Superformance rank at the top here: for .300 Blaser Mag. with the .308 | 150gr | Berger Target FB 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.