Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 156gr | Reichenberg HDB Ogival bullet and 89 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-16 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% | 54,650 psi | 90% | 2989 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,359 psi | 88% | 3009 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,227 psi | 82% | 3038 fps | 99% |
| Accurate 4064 | <<locked>> | 86% | 55,027 psi | 90% | 3048 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 52,475 psi | 86% | 3100 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 54,795 psi | 90% | 3084 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 52,605 psi | 86% | 3031 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 53,998 psi | 89% | 3146 fps | 97.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 51,343 psi | 84% | 3153 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,098 psi | 87% | 3058 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,272 psi | 87% | 3077 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,534 psi | 88% | 3166 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,781 psi | 90% | 3196 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,156 psi | 87% | 3130 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,169 psi | 82% | 3123 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,282 psi | 78% | 3061 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,118 psi | 68% | 2963 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,447 psi | 89% | 3268 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,766 psi | 90% | 3100 fps | 100% |
| Bofors RP3 | <<locked>> | 86% | 53,664 psi | 88% | 3071 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,169 psi | 82% | 3123 fps | 97% |
| Bofors RP7 | <<locked>> | 90% | 53,490 psi | 88% | 3051 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 86% | 54,230 psi | 89% | 3087 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 92% | 54,998 psi | 90% | 3156 fps | 99% |
| Hodgdon H4350 | <<locked>> | 90% | 55,114 psi | 90% | 3117 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 53,679 psi | 88% | 3084 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 51,924 psi | 85% | 3071 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 51,459 psi | 84% | 3130 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,940 psi | 59% | 1936 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,098 psi | 87% | 3041 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,011 psi | 85% | 3015 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,882 psi | 90% | 3051 fps | 98.8% |
| IMR 4350 | <<locked>> | 94% | 54,404 psi | 89% | 3084 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 88% | 51,909 psi | 85% | 3025 fps | 98.4% |
| IMR 4831 | <<locked>> | 94% | 52,997 psi | 87% | 3091 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 54,694 psi | 90% | 3110 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,868 psi | 90% | 3051 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 53,896 psi | 88% | 3009 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 52,112 psi | 86% | 3009 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,056 psi | 90% | 3077 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 52,924 psi | 87% | 3064 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,278 psi | 68% | 2867 fps | 97.2% |
| Norma 201 | <<locked>> | 82% | 53,330 psi | 88% | 3022 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,215 psi | 89% | 3022 fps | 100% |
| Norma 203B | <<locked>> | 84% | 52,576 psi | 86% | 3064 fps | 100% |
| Norma 204 | <<locked>> | 92% | 51,561 psi | 85% | 3077 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 53,272 psi | 87% | 3212 fps | 98.8% |
| Norma URP | <<locked>> | 94% | 54,998 psi | 90% | 3143 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 53,447 psi | 88% | 3091 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 53,969 psi | 89% | 3143 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,492 psi | 60% | 1978 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,491 psi | 89% | 3071 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,259 psi | 89% | 3153 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,375 psi | 89% | 3186 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 52,460 psi | 86% | 3123 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 51,213 psi | 84% | 3150 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 53,983 psi | 89% | 3025 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,737 psi | 88% | 3068 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 52,228 psi | 86% | 3054 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 98% | 52,098 psi | 86% | 3110 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 90% | 53,490 psi | 88% | 3051 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,056 psi | 90% | 3077 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,868 psi | 90% | 3051 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 52,112 psi | 86% | 3009 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 52,924 psi | 87% | 3064 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 52,127 psi | 86% | 3077 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,374 psi | 88% | 3054 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,346 psi | 89% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 52,025 psi | 85% | 2907 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,955 psi | 90% | 3025 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 51,619 psi | 85% | 3104 fps | 97.3% |
| Somchem S335 | <<locked>> | 82% | 53,998 psi | 89% | 2949 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,998 psi | 89% | 3068 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 53,896 psi | 88% | 3143 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 52,779 psi | 87% | 3087 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 82% | 54,868 psi | 90% | 2933 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,230 psi | 89% | 2982 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,694 psi | 90% | 2999 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 51,822 psi | 85% | 2986 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 53,795 psi | 88% | 3084 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,805 psi | 80% | 2999 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 84% | 53,069 psi | 87% | 2995 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 52,765 psi | 87% | 3084 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,678 psi | 86% | 3143 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,577 psi | 88% | 3051 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 51,605 psi | 85% | 3097 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,540 psi | 70% | 3107 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 53,447 psi | 88% | 3061 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,098 psi | 87% | 3077 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% | 47,906 psi | 79% | 2887 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,528 psi | 76% | 2884 fps | 96.7% |
| Accurate 3100 | <<locked>> | 90% | 35,172 psi | 58% | 2730 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 45,368 psi | 74% | 2890 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,069 psi | 56% | 2720 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 80% | 51,242 psi | 84% | 3025 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,555 psi | 72% | 2864 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 92% | 44,251 psi | 73% | 2956 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,892 psi | 79% | 3091 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,700 psi | 72% | 2890 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,760 psi | 77% | 2963 fps | 99.7% |
| Alliant Reloder-16 | 60.4 gr | 80% | 33,837 psi | 56% | 2740 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,319 psi | 63% | 2877 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,729 psi | 72% | 2946 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 43,845 psi | 72% | 2995 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,818 psi | 46% | 2582 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,881 psi | 56% | 2769 fps | 95.1% |
| Alliant Reloder-26 | 71.7 gr | 86% | 32,198 psi | 53% | 2772 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,271 psi | 84% | 3041 fps | 99.9% |
| Bofors RP3 | <<locked>> | 80% | 43,714 psi | 72% | 2897 fps | 99.9% |
| Bofors RP5 | <<locked>> | 96% | 43,845 psi | 72% | 2995 fps | 95.3% |
| Bofors RP7 | <<locked>> | 82% | 41,350 psi | 68% | 2815 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 44,353 psi | 73% | 2907 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 82% | 39,146 psi | 64% | 2844 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 82% | 42,322 psi | 69% | 2871 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,256 psi | 51% | 2628 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,486 psi | 80% | 3015 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 41,133 psi | 68% | 2917 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,789 psi | 44% | 1732 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,647 psi | 82% | 2982 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,745 psi | 75% | 2904 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,298 psi | 79% | 2933 fps | 97.8% |
| IMR 4350 | <<locked>> | 86% | 42,032 psi | 69% | 2848 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,321 psi | 66% | 2792 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 33,011 psi | 54% | 2677 fps | 96.4% |
| IMR 4895 | <<locked>> | 80% | 47,979 psi | 79% | 2992 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 51,227 psi | 84% | 2995 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,676 psi | 83% | 2953 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,934 psi | 75% | 2904 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,681 psi | 62% | 2736 fps | 96.4% |
| Lovex S070 | <<locked>> | 82% | 38,276 psi | 63% | 2769 fps | 95.4% |
| Lovex S071 | <<locked>> | 96% | 36,143 psi | 59% | 2753 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 50,038 psi | 82% | 2966 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,662 psi | 83% | 2966 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,108 psi | 76% | 2946 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 44,846 psi | 74% | 2949 fps | 95.2% |
| Norma MRP | <<locked>> | 92% | 40,190 psi | 66% | 2946 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 34,374 psi | 56% | 2726 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 80% | 46,499 psi | 76% | 2972 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 35,795 psi | 59% | 2769 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 45% | 1772 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,483 psi | 73% | 2887 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,575 psi | 83% | 3091 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,843 psi | 67% | 2946 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,011 psi | 56% | 2740 fps | 96.3% |
| ReloadSwiss RS 70 | 66.1 gr | 80% | 33,489 psi | 55% | 2746 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 47,587 psi | 78% | 2913 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,147 psi | 68% | 2838 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 48,965 psi | 80% | 2992 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 94% | 45,411 psi | 75% | 2986 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 82% | 41,350 psi | 68% | 2815 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,681 psi | 62% | 2736 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,227 psi | 84% | 2995 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,934 psi | 75% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,276 psi | 63% | 2769 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,482 psi | 70% | 2897 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,980 psi | 82% | 2995 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,169 psi | 84% | 2904 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,018 psi | 71% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,378 psi | 65% | 2733 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,991 psi | 74% | 2979 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 50,807 psi | 83% | 2900 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,655 psi | 68% | 2841 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 30,748 psi | 50% | 2674 fps | 98.6% |
| Somchem S385 | <<locked>> | 90% | 40,393 psi | 66% | 2844 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 51,721 psi | 85% | 2890 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,790 psi | 78% | 2884 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,182 psi | 79% | 2897 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,798 psi | 65% | 2769 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 35,679 psi | 59% | 2726 fps | 97% |
| Vihtavuori N165 | <<locked>> | 96% | 42,598 psi | 70% | 2877 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 46,499 psi | 76% | 2887 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,244 psi | 58% | 2726 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 84% | 30,545 psi | 50% | 2664 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,244 psi | 58% | 2700 fps | 98.9% |
| Winchester 760 | <<locked>> | 82% | 39,146 psi | 64% | 2844 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,252 psi | 43% | 2605 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,792 psi | 82% | 2999 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 46,137 psi | 76% | 2953 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 105 powders for .300 Blaser Mag. loaded with the .308 | 156gr | Reichenberg HDB Ogival. Alliant Reloder-26 delivers the highest muzzle velocity at 3,268 fps; across all powders the maximum-charge window runs from 1,936 fps to 3,268 fps. Accurate 3100 gives the best case fill at 100 %, and 105 of the 105 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 156.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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-16, Alliant Reloder-26 rank at the top here: for .300 Blaser Mag. with the .308 | 156gr | Reichenberg HDB Ogival they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Baschieri & Pellagri 109, Hodgdon H1000 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.