Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 150gr | Nosler Partition 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.
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% | 52,881 psi | 87% | 3018 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,288 psi | 89% | 3077 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,590 psi | 85% | 3107 fps | 99% |
| Accurate 4064 | <<locked>> | 84% | 53,142 psi | 87% | 3071 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,650 psi | 88% | 3169 fps | 99.9% |
| Accurate High Country | <<locked>> | 98% | 52,591 psi | 86% | 3255 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 86% | 53,403 psi | 88% | 3100 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,969 psi | 90% | 3212 fps | 97.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 52,272 psi | 86% | 3222 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,940 psi | 90% | 3209 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,041 psi | 89% | 3127 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,447 psi | 89% | 3150 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,549 psi | 90% | 3235 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 52,098 psi | 86% | 3205 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,157 psi | 89% | 3196 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,184 psi | 84% | 3192 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,225 psi | 79% | 3130 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,177 psi | 69% | 3031 fps | 98% |
| Alliant Reloder-26 | <<locked>> | 98% | 51,547 psi | 85% | 3271 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 54,969 psi | 90% | 3146 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,184 psi | 84% | 3192 fps | 97% |
| Bofors RP7 | <<locked>> | 90% | 54,462 psi | 89% | 3120 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 84% | 51,866 psi | 85% | 3097 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 90% | 52,446 psi | 86% | 3166 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 88% | 52,388 psi | 86% | 3123 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,708 psi | 90% | 3153 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 52,982 psi | 87% | 3143 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 52,417 psi | 86% | 3196 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,201 psi | 59% | 1982 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,954 psi | 89% | 3110 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,910 psi | 87% | 3084 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 52,214 psi | 86% | 3058 fps | 98.3% |
| IMR 4350 | <<locked>> | 92% | 51,909 psi | 85% | 3094 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 52,779 psi | 87% | 3094 fps | 98.3% |
| IMR 4831 | <<locked>> | 94% | 54,157 psi | 89% | 3163 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 52,359 psi | 86% | 3123 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,578 psi | 90% | 3074 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 53,026 psi | 87% | 3077 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 52,808 psi | 87% | 3091 fps | 99.3% |
| Lovex S070 | <<locked>> | 92% | 53,882 psi | 88% | 3130 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,786 psi | 70% | 2943 fps | 97.3% |
| Norma 201 | <<locked>> | 82% | 54,520 psi | 90% | 3094 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,056 psi | 90% | 3091 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,737 psi | 88% | 3136 fps | 100% |
| Norma 204 | <<locked>> | 92% | 52,460 psi | 86% | 3143 fps | 96.8% |
| Norma MRPᴾ | <<locked>> | 100% | 54,433 psi | 89% | 3287 fps | 98.8% |
| Norma URP | <<locked>> | 92% | 52,489 psi | 86% | 3156 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 54,331 psi | 89% | 3159 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 54,824 psi | 90% | 3212 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,796 psi | 60% | 2028 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 51,808 psi | 85% | 3077 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 51,561 psi | 85% | 3199 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 53,534 psi | 88% | 3192 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 52,214 psi | 86% | 3219 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 82% | 51,706 psi | 85% | 3038 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,998 psi | 90% | 3140 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 53,098 psi | 87% | 3120 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 98% | 53,258 psi | 87% | 3179 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 90% | 54,462 psi | 89% | 3120 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 52,808 psi | 87% | 3091 fps | 99.3% |
| Shooters World Precision | <<locked>> | 84% | 53,026 psi | 87% | 3077 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,882 psi | 88% | 3130 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 53,069 psi | 87% | 3146 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,172 psi | 89% | 3120 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 52,736 psi | 87% | 2969 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 52,562 psi | 86% | 3038 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 52,779 psi | 87% | 3176 fps | 97.2% |
| Somchem S335 | <<locked>> | 82% | 55,114 psi | 90% | 3018 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,955 psi | 90% | 3133 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 51,517 psi | 85% | 3159 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,954 psi | 89% | 3153 fps | 98.2% |
| Vihtavuori N135 | <<locked>> | 82% | 51,866 psi | 85% | 3002 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 52,373 psi | 86% | 3018 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 52,881 psi | 87% | 3054 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,650 psi | 90% | 3150 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,806 psi | 82% | 3064 fps | 97% |
| Vihtavuori N540 | <<locked>> | 84% | 53,911 psi | 89% | 3061 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,824 psi | 88% | 3156 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,012 psi | 89% | 3215 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,549 psi | 90% | 3117 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 52,663 psi | 86% | 3169 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,700 psi | 72% | 3179 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,259 psi | 89% | 3127 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,244 psi | 89% | 3150 fps | 97.3% |
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% | 49,458 psi | 81% | 2963 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,413 psi | 78% | 2949 fps | 96.6% |
| Accurate 3100 | <<locked>> | 90% | 36,434 psi | 60% | 2799 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 46,833 psi | 77% | 2966 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,375 psi | 58% | 2799 fps | 96.8% |
| Accurate High Country | <<locked>> | 96% | 48,907 psi | 80% | 3182 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 44,353 psi | 73% | 2933 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 94% | 48,109 psi | 79% | 3084 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,646 psi | 80% | 3156 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 45,063 psi | 74% | 3018 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,628 psi | 73% | 2956 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,863 psi | 79% | 3035 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,693 psi | 57% | 2805 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,276 psi | 64% | 2949 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 92% | 44,512 psi | 73% | 3012 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 96% | 44,773 psi | 74% | 3061 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,819 psi | 47% | 2651 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,853 psi | 57% | 2838 fps | 95.1% |
| Alliant Reloder-26 | 73.5 gr | 86% | 33,344 psi | 55% | 2844 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 44,976 psi | 74% | 2969 fps | 99.9% |
| Bofors RP5 | <<locked>> | 96% | 44,773 psi | 74% | 3061 fps | 95.2% |
| Bofors RP7 | <<locked>> | 82% | 42,366 psi | 70% | 2884 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 45,469 psi | 75% | 2979 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 82% | 40,103 psi | 66% | 2910 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 84% | 46,064 psi | 76% | 2999 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,227 psi | 53% | 2697 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,385 psi | 81% | 3081 fps | 100% |
| Hodgdon Superformance | 74 gr | 84% | 42,134 psi | 69% | 2986 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 44% | 1775 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,575 psi | 83% | 3051 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,644 psi | 77% | 2972 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,994 psi | 80% | 2995 fps | 97.7% |
| IMR 4350 | <<locked>> | 86% | 43,018 psi | 71% | 2917 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,089 psi | 67% | 2858 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 34,156 psi | 56% | 2749 fps | 96.4% |
| IMR 4895 | <<locked>> | 80% | 49,081 psi | 81% | 3064 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 51,459 psi | 84% | 3022 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,934 psi | 77% | 2972 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,682 psi | 64% | 2805 fps | 96.4% |
| Lovex S070 | <<locked>> | 82% | 39,378 psi | 65% | 2838 fps | 95.4% |
| Lovex S071 | <<locked>> | 96% | 37,550 psi | 62% | 2825 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 51,111 psi | 84% | 3038 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,605 psi | 85% | 3035 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,224 psi | 78% | 3022 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 45,687 psi | 75% | 3012 fps | 95.1% |
| Norma MRP | <<locked>> | 92% | 41,205 psi | 68% | 3015 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 35,346 psi | 58% | 2795 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 80% | 47,326 psi | 78% | 3038 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 36,695 psi | 60% | 2838 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,369 psi | 45% | 1814 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,426 psi | 75% | 2956 fps | 97.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,727 psi | 69% | 3015 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,041 psi | 58% | 2808 fps | 96.3% |
| ReloadSwiss RS 70 | 67.7 gr | 80% | 34,360 psi | 56% | 2812 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 48,675 psi | 80% | 2986 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,308 psi | 69% | 2910 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 49,893 psi | 82% | 3061 fps | 95% |
| Rottweil R 905 | <<locked>> | 94% | 46,470 psi | 76% | 3051 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 82% | 42,366 psi | 70% | 2884 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,682 psi | 64% | 2805 fps | 96.4% |
| Shooters World Precision | <<locked>> | 80% | 46,934 psi | 77% | 2972 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 39,378 psi | 65% | 2838 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,468 psi | 71% | 2966 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,865 psi | 84% | 3064 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,772 psi | 72% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,393 psi | 66% | 2799 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 46,035 psi | 76% | 3048 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 51,750 psi | 85% | 2969 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,685 psi | 70% | 2910 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 31,734 psi | 52% | 2743 fps | 98.7% |
| Somchem S385 | <<locked>> | 90% | 41,423 psi | 68% | 2913 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 48,675 psi | 80% | 2949 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,066 psi | 81% | 2966 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,756 psi | 67% | 2835 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 36,724 psi | 60% | 2795 fps | 97.1% |
| Vihtavuori N165 | <<locked>> | 96% | 43,555 psi | 72% | 2943 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 47,485 psi | 78% | 2956 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,274 psi | 60% | 2795 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 82% | 29,588 psi | 49% | 2677 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,027 psi | 59% | 2766 fps | 98.9% |
| Winchester 760 | <<locked>> | 82% | 40,103 psi | 66% | 2910 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,296 psi | 45% | 2680 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,676 psi | 83% | 3068 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 46,992 psi | 77% | 3018 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 84 powders for .300 Blaser Mag. loaded with the .308 | 150gr | Nosler Partition. Norma MRP delivers the highest muzzle velocity at 3,287 fps; across all powders the maximum-charge window runs from 1,982 fps to 3,287 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 1:14.5 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 | Nosler Partition 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.