Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 145gr | SUS-TAC HPT bullet and 88 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
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% | 53,055 psi | 87% | 3061 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,911 psi | 90% | 3114 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,703 psi | 78% | 3074 fps | 97.9% |
| Accurate 4064 | <<locked>> | 86% | 53,301 psi | 88% | 3117 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,606 psi | 88% | 3212 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 52,939 psi | 87% | 3146 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,041 psi | 89% | 3146 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,100 psi | 90% | 3245 fps | 96.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 52,678 psi | 86% | 3268 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,505 psi | 89% | 3173 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,694 psi | 90% | 3192 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,447 psi | 89% | 3274 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 52,054 psi | 85% | 3245 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,099 psi | 89% | 3228 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,817 psi | 74% | 3104 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,465 psi | 65% | 2992 fps | 96.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,329 psi | 84% | 3304 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,779 psi | 87% | 3156 fps | 99.7% |
| Bofors RP3 | <<locked>> | 86% | 51,764 psi | 85% | 3133 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 54,810 psi | 90% | 3156 fps | 97.7% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,911 psi | 90% | 3176 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 52,344 psi | 86% | 3143 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 92% | 52,562 psi | 86% | 3202 fps | 98% |
| Hodgdon H4350 | <<locked>> | 90% | 52,823 psi | 87% | 3163 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 82% | 53,490 psi | 88% | 3156 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,592 psi | 90% | 3189 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,316 psi | 88% | 3189 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 52,649 psi | 86% | 3235 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,882 psi | 59% | 1995 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,549 psi | 90% | 3159 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 53,577 psi | 88% | 3136 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,461 psi | 88% | 3127 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 52,939 psi | 87% | 3104 fps | 97.9% |
| IMR 4350 | <<locked>> | 94% | 52,199 psi | 86% | 3130 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,345 psi | 88% | 3133 fps | 97.9% |
| IMR 4831 | <<locked>> | 96% | 54,012 psi | 89% | 3199 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 52,707 psi | 87% | 3169 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 52,910 psi | 87% | 3117 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 51,967 psi | 85% | 3064 fps | 99.9% |
| Lovex S062 | <<locked>> | 86% | 53,447 psi | 88% | 3123 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,026 psi | 87% | 3130 fps | 98.9% |
| Lovex S070 | <<locked>> | 94% | 54,143 psi | 89% | 3169 fps | 98.3% |
| Norma 201 | <<locked>> | 84% | 55,013 psi | 90% | 3140 fps | 100% |
| Norma 202 | <<locked>> | 82% | 52,185 psi | 86% | 3084 fps | 100% |
| Norma 203B | <<locked>> | 86% | 53,954 psi | 89% | 3179 fps | 100% |
| Norma 204 | <<locked>> | 94% | 52,562 psi | 86% | 3176 fps | 96.1% |
| Norma MRPᴾ | <<locked>> | 100% | 50,430 psi | 83% | 3248 fps | 97.6% |
| Norma URP | <<locked>> | 94% | 52,533 psi | 86% | 3196 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 86% | 54,621 psi | 90% | 3202 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 54,839 psi | 90% | 3248 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,434 psi | 60% | 2044 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,431 psi | 86% | 3120 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 51,735 psi | 85% | 3202 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 51,677 psi | 85% | 3245 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,287 psi | 87% | 3228 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,359 psi | 86% | 3258 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 84% | 52,330 psi | 86% | 3087 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 51,619 psi | 85% | 3123 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,055 psi | 87% | 3212 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 92% | 54,810 psi | 90% | 3156 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,026 psi | 87% | 3130 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 52,910 psi | 87% | 3117 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,447 psi | 88% | 3123 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,143 psi | 89% | 3169 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,330 psi | 88% | 3189 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 53,824 psi | 88% | 3136 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,752 psi | 90% | 3166 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,649 psi | 86% | 3018 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,374 psi | 88% | 3018 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 52,924 psi | 87% | 3074 fps | 97.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,562 psi | 86% | 3202 fps | 96.6% |
| Somchem S335 | <<locked>> | 82% | 52,402 psi | 86% | 3018 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,708 psi | 88% | 3130 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 51,895 psi | 85% | 3123 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 54,824 psi | 90% | 3258 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,824 psi | 88% | 3186 fps | 97.6% |
| Vihtavuori N133 | <<locked>> | 82% | 53,040 psi | 87% | 3002 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 52,315 psi | 86% | 3051 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 52,779 psi | 87% | 3064 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,272 psi | 87% | 3100 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,839 psi | 90% | 3189 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 86% | 54,534 psi | 90% | 3110 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,027 psi | 89% | 3196 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,096 psi | 82% | 3189 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,824 psi | 90% | 3159 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 52,779 psi | 87% | 3205 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,422 psi | 66% | 3133 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,781 psi | 90% | 3176 fps | 100% |
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% | 46,572 psi | 76% | 2956 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,049 psi | 74% | 2930 fps | 95.3% |
| Accurate 3100 | <<locked>> | 94% | 38,798 psi | 64% | 2890 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 44,034 psi | 72% | 2956 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,837 psi | 54% | 2766 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 49,530 psi | 81% | 3084 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 42,076 psi | 69% | 2917 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 96% | 48,254 psi | 79% | 3114 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,672 psi | 75% | 3130 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,163 psi | 69% | 2943 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,121 psi | 74% | 3015 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,692 psi | 54% | 2779 fps | 95.2% |
| Alliant Reloder-17 | 64.5 gr | 80% | 36,709 psi | 60% | 2920 fps | 98.5% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,500 psi | 78% | 3104 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,747 psi | 47% | 2677 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 98% | 37,057 psi | 61% | 2927 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 90% | 35,607 psi | 58% | 2943 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,168 psi | 81% | 3094 fps | 99.4% |
| Bofors RP3 | <<locked>> | 80% | 42,235 psi | 69% | 2953 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 45,440 psi | 75% | 2979 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,198 psi | 84% | 3114 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,873 psi | 70% | 2959 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 86% | 43,004 psi | 71% | 3012 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 86% | 46,456 psi | 76% | 3038 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 50,024 psi | 82% | 3094 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,168 psi | 50% | 2671 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,543 psi | 76% | 3071 fps | 99.9% |
| Hodgdon Superformance | 73.3 gr | 86% | 42,351 psi | 70% | 3022 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,701 psi | 44% | 1785 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,921 psi | 79% | 3041 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 50,183 psi | 82% | 3084 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,222 psi | 73% | 2956 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,601 psi | 77% | 2979 fps | 96.6% |
| IMR 4350 | <<locked>> | 88% | 43,192 psi | 71% | 2953 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,524 psi | 68% | 2897 fps | 95% |
| IMR 4831 | <<locked>> | 82% | 33,982 psi | 56% | 2779 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 46,238 psi | 76% | 3048 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 49,414 psi | 81% | 3058 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,849 psi | 80% | 3005 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 44,251 psi | 73% | 2956 fps | 99.8% |
| Lovex S065 | <<locked>> | 80% | 36,550 psi | 60% | 2782 fps | 95% |
| Lovex S070 | <<locked>> | 86% | 42,061 psi | 69% | 2933 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 48,544 psi | 80% | 3028 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,965 psi | 80% | 3031 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,527 psi | 73% | 3005 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 49,284 psi | 81% | 3117 fps | 95.3% |
| Norma MRP | <<locked>> | 96% | 43,874 psi | 72% | 3107 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 32,909 psi | 54% | 2762 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 44,454 psi | 73% | 3018 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 39,320 psi | 65% | 2933 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,122 psi | 45% | 1827 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,047 psi | 71% | 2936 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,240 psi | 79% | 3140 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,044 psi | 64% | 2989 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 35,012 psi | 57% | 2844 fps | 95.7% |
| ReloadSwiss RS 70 | 68.8 gr | 84% | 37,028 psi | 61% | 2913 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 46,166 psi | 76% | 2976 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 39,595 psi | 65% | 2887 fps | 99% |
| Rottweil R 905 | <<locked>> | 96% | 46,470 psi | 76% | 3084 fps | 95% |
| Rottweil R 907 | <<locked>> | 86% | 45,440 psi | 75% | 2979 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,550 psi | 60% | 2782 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,414 psi | 81% | 3058 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,251 psi | 73% | 2956 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 42,061 psi | 69% | 2933 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,654 psi | 67% | 2943 fps | 98.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,357 psi | 83% | 3077 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,037 psi | 79% | 3048 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,588 psi | 81% | 2969 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,611 psi | 68% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,727 psi | 67% | 2835 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 49,197 psi | 81% | 3140 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 49,269 psi | 81% | 2966 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,038 psi | 82% | 3068 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 40,306 psi | 66% | 2894 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 29,660 psi | 49% | 2717 fps | 97.4% |
| Somchem S385 | <<locked>> | 94% | 44,208 psi | 73% | 3005 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 50,009 psi | 82% | 2956 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,079 psi | 76% | 2949 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,354 psi | 76% | 2956 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,305 psi | 63% | 2818 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 34,345 psi | 56% | 2769 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 44,962 psi | 74% | 2949 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,997 psi | 56% | 2772 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 86% | 31,241 psi | 51% | 2762 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,968 psi | 56% | 2743 fps | 97.8% |
| Winchester 760 | <<locked>> | 86% | 43,004 psi | 71% | 3012 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 29,037 psi | 48% | 2769 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,950 psi | 79% | 3058 fps | 99.9% |
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 107 powders for .300 Blaser Mag. loaded with the .308 | 145gr | SUS-TAC HPT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,304 fps; across all powders the maximum-charge window runs from 1,995 fps to 3,304 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 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 145.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 Blaser Mag. with the .308 | 145gr | SUS-TAC HPT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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.