Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 150gr | NorthFork Bonded Core bullet and 84 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.
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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% | 52,591 psi | 86% | 3012 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,085 psi | 89% | 3068 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,169 psi | 84% | 3100 fps | 98.9% |
| Accurate 4064 | <<locked>> | 84% | 52,881 psi | 87% | 3068 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,417 psi | 88% | 3166 fps | 99.9% |
| Accurate High Country | <<locked>> | 98% | 52,170 psi | 86% | 3245 fps | 96% |
| ADI AR 2208 | <<locked>> | 86% | 53,374 psi | 88% | 3097 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,578 psi | 90% | 3205 fps | 97.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 52,025 psi | 85% | 3219 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,505 psi | 89% | 3199 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,795 psi | 88% | 3120 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,215 psi | 89% | 3146 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,085 psi | 89% | 3228 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 51,619 psi | 85% | 3196 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,737 psi | 88% | 3189 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,995 psi | 84% | 3186 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,008 psi | 79% | 3123 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,003 psi | 69% | 3025 fps | 97.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 51,372 psi | 84% | 3264 fps | 99.8% |
| Bofors RP3 | <<locked>> | 86% | 54,723 psi | 90% | 3140 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,995 psi | 84% | 3186 fps | 96.9% |
| Bofors RP7 | <<locked>> | 90% | 54,259 psi | 89% | 3117 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 84% | 51,634 psi | 85% | 3094 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 90% | 52,185 psi | 86% | 3159 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 88% | 52,185 psi | 86% | 3117 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,476 psi | 89% | 3146 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 52,721 psi | 87% | 3140 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 52,257 psi | 86% | 3192 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,216 psi | 59% | 1982 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,679 psi | 88% | 3104 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,678 psi | 86% | 3077 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 51,982 psi | 85% | 3051 fps | 98.2% |
| IMR 4350 | <<locked>> | 92% | 51,735 psi | 85% | 3091 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 52,576 psi | 86% | 3087 fps | 98.2% |
| IMR 4831 | <<locked>> | 94% | 53,896 psi | 88% | 3156 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 52,127 psi | 86% | 3117 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,317 psi | 89% | 3068 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 52,982 psi | 87% | 3074 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 52,605 psi | 86% | 3087 fps | 99.2% |
| Lovex S070 | <<locked>> | 92% | 53,693 psi | 88% | 3127 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,395 psi | 70% | 2933 fps | 97.2% |
| Norma 201 | <<locked>> | 82% | 54,288 psi | 89% | 3087 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,824 psi | 90% | 3084 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,505 psi | 88% | 3130 fps | 100% |
| Norma 204 | <<locked>> | 92% | 52,228 psi | 86% | 3136 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 54,244 psi | 89% | 3281 fps | 98.7% |
| Norma URP | <<locked>> | 92% | 52,243 psi | 86% | 3153 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 54,114 psi | 89% | 3156 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 54,592 psi | 90% | 3205 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,796 psi | 60% | 2028 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 51,590 psi | 85% | 3071 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,911 psi | 90% | 3219 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,926 psi | 90% | 3251 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 53,287 psi | 87% | 3189 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 51,822 psi | 85% | 3212 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 54,897 psi | 90% | 3087 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,752 psi | 90% | 3136 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 53,026 psi | 87% | 3176 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 90% | 54,259 psi | 89% | 3117 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 52,605 psi | 86% | 3087 fps | 99.2% |
| Shooters World Precision | <<locked>> | 84% | 52,982 psi | 87% | 3074 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,693 psi | 88% | 3127 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 52,808 psi | 87% | 3140 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,940 psi | 89% | 3117 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 52,692 psi | 87% | 2969 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 52,301 psi | 86% | 3031 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 52,547 psi | 86% | 3169 fps | 97.2% |
| Somchem S335 | <<locked>> | 82% | 54,853 psi | 90% | 3015 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,723 psi | 90% | 3130 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,969 psi | 90% | 3212 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,751 psi | 88% | 3153 fps | 98.1% |
| Vihtavuori N135 | <<locked>> | 82% | 51,779 psi | 85% | 2999 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 52,112 psi | 86% | 3012 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 52,649 psi | 86% | 3051 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,389 psi | 89% | 3146 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,458 psi | 81% | 3058 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 84% | 53,693 psi | 88% | 3054 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,650 psi | 88% | 3153 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,795 psi | 88% | 3212 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,128 psi | 89% | 3110 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 52,402 psi | 86% | 3163 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,352 psi | 71% | 3173 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,027 psi | 89% | 3123 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% | 49,182 psi | 81% | 2956 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,398 psi | 78% | 2946 fps | 96.5% |
| Accurate 3100 | <<locked>> | 90% | 36,260 psi | 60% | 2795 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 46,543 psi | 76% | 2963 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,143 psi | 58% | 2792 fps | 96.7% |
| Accurate High Country | <<locked>> | 96% | 48,689 psi | 80% | 3176 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 44,121 psi | 72% | 2927 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 47,921 psi | 79% | 3081 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,399 psi | 79% | 3153 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 44,889 psi | 74% | 3015 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,585 psi | 73% | 2956 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,601 psi | 78% | 3028 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,635 psi | 57% | 2805 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,059 psi | 64% | 2940 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 47,355 psi | 78% | 3068 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 96% | 44,570 psi | 73% | 3058 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,689 psi | 47% | 2648 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,737 psi | 57% | 2835 fps | 95% |
| Alliant Reloder-26 | 73.2 gr | 86% | 33,156 psi | 54% | 2838 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 44,744 psi | 73% | 2966 fps | 99.9% |
| Bofors RP5 | <<locked>> | 96% | 44,570 psi | 73% | 3058 fps | 95.1% |
| Bofors RP7 | <<locked>> | 82% | 42,192 psi | 69% | 2877 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 45,223 psi | 74% | 2972 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 82% | 39,885 psi | 65% | 2904 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 84% | 45,847 psi | 75% | 2992 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,010 psi | 53% | 2690 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,182 psi | 81% | 3077 fps | 100% |
| Hodgdon Superformance | 73.7 gr | 84% | 41,930 psi | 69% | 2982 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,919 psi | 44% | 1772 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,314 psi | 83% | 3048 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,398 psi | 76% | 2963 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,776 psi | 80% | 2992 fps | 97.6% |
| IMR 4350 | <<locked>> | 86% | 42,815 psi | 70% | 2913 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,886 psi | 67% | 2848 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 33,939 psi | 56% | 2743 fps | 96.3% |
| IMR 4895 | <<locked>> | 80% | 48,805 psi | 80% | 3058 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 51,198 psi | 84% | 3012 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,688 psi | 77% | 2966 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,450 psi | 63% | 2799 fps | 96.3% |
| Lovex S070 | <<locked>> | 82% | 39,204 psi | 64% | 2831 fps | 95.3% |
| Lovex S071 | <<locked>> | 96% | 37,188 psi | 61% | 2818 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 50,865 psi | 84% | 3031 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,547 psi | 85% | 3035 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,949 psi | 77% | 3012 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 48,631 psi | 80% | 3071 fps | 95.8% |
| Norma MRP | <<locked>> | 92% | 41,002 psi | 67% | 3009 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 35,099 psi | 58% | 2789 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 80% | 47,094 psi | 77% | 3031 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 36,492 psi | 60% | 2831 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,354 psi | 45% | 1814 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,208 psi | 74% | 2949 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,343 psi | 84% | 3156 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,495 psi | 68% | 3009 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,867 psi | 57% | 2805 fps | 96.2% |
| ReloadSwiss RS 70 | 67.4 gr | 80% | 34,185 psi | 56% | 2805 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 48,399 psi | 79% | 2979 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,032 psi | 69% | 2904 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 94% | 46,282 psi | 76% | 3048 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 82% | 42,192 psi | 69% | 2877 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,450 psi | 63% | 2799 fps | 96.3% |
| Shooters World Precision | <<locked>> | 80% | 46,688 psi | 77% | 2966 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 39,204 psi | 64% | 2831 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,221 psi | 71% | 2959 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,618 psi | 83% | 3058 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,700 psi | 72% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,234 psi | 66% | 2795 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 45,861 psi | 75% | 3041 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 51,474 psi | 85% | 2963 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,467 psi | 70% | 2907 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 31,676 psi | 52% | 2740 fps | 98.6% |
| Somchem S385 | <<locked>> | 90% | 41,249 psi | 68% | 2907 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 48,631 psi | 80% | 2949 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,791 psi | 80% | 2959 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,553 psi | 67% | 2831 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 36,521 psi | 60% | 2789 fps | 97% |
| Vihtavuori N165 | <<locked>> | 96% | 43,395 psi | 71% | 2940 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 47,239 psi | 78% | 2949 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,114 psi | 59% | 2789 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 82% | 29,399 psi | 48% | 2671 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,853 psi | 59% | 2759 fps | 98.8% |
| Winchester 760 | <<locked>> | 82% | 39,885 psi | 65% | 2904 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,151 psi | 45% | 2674 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,430 psi | 83% | 3064 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 46,804 psi | 77% | 3012 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 84 powders for .300 Blaser Mag. loaded with the .308 | 150gr | NorthFork Bonded Core. Norma MRP delivers the highest muzzle velocity at 3,281 fps; across all powders the maximum-charge window runs from 1,982 fps to 3,281 fps. Accurate 3100 gives the best case fill at 100 %, and 84 of the 84 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 | NorthFork Bonded Core 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.