Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 139gr | RWS Evolution Green bullet and 92 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-17 and ReloadSwiss RS 60.
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 2015 | <<locked>> | 82% | 53,374 psi | 88% | 3094 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 52,040 psi | 85% | 3114 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,027 psi | 89% | 3189 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 51,619 psi | 85% | 3107 fps | 96.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,453 psi | 71% | 3045 fps | 96.4% |
| Accurate 4064 | <<locked>> | 88% | 52,359 psi | 86% | 3166 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 52,924 psi | 87% | 3258 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 84% | 52,794 psi | 87% | 3202 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 90% | 54,143 psi | 89% | 3205 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 51,750 psi | 85% | 3150 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 52,678 psi | 86% | 3130 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 52,721 psi | 87% | 3327 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,259 psi | 89% | 3228 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,708 psi | 90% | 3251 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,114 psi | 89% | 3327 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 51,721 psi | 85% | 3301 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,263 psi | 68% | 3077 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,934 psi | 77% | 3271 fps | 98.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 52,808 psi | 87% | 3215 fps | 99.5% |
| Bofors RP3 | <<locked>> | 90% | 54,708 psi | 90% | 3241 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,824 psi | 90% | 3209 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 53,461 psi | 88% | 3133 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,868 psi | 90% | 3235 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 52,069 psi | 85% | 3196 fps | 99% |
| Hodgdon H414 | <<locked>> | 94% | 52,214 psi | 86% | 3251 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 92% | 52,779 psi | 87% | 3212 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 84% | 53,316 psi | 88% | 3215 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,056 psi | 89% | 3241 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 53,229 psi | 87% | 3251 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 52,750 psi | 87% | 3287 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,505 psi | 58% | 2028 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,868 psi | 90% | 3222 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 53,505 psi | 88% | 3202 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 53,447 psi | 88% | 3186 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 53,316 psi | 88% | 3159 fps | 97.5% |
| IMR 4350 | <<locked>> | 96% | 52,141 psi | 86% | 3182 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 53,476 psi | 88% | 3189 fps | 97.4% |
| IMR 4831 | <<locked>> | 98% | 53,592 psi | 88% | 3251 fps | 99.5% |
| IMR 4895 | <<locked>> | 86% | 52,649 psi | 86% | 3228 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 82% | 51,750 psi | 85% | 3150 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 52,620 psi | 86% | 3173 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 52,359 psi | 86% | 3127 fps | 99.8% |
| Lovex S062 | <<locked>> | 88% | 53,388 psi | 88% | 3186 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 52,837 psi | 87% | 3182 fps | 98.5% |
| Lovex S070 | <<locked>> | 96% | 53,911 psi | 89% | 3219 fps | 97.8% |
| Norma 201 | <<locked>> | 86% | 54,781 psi | 90% | 3199 fps | 100% |
| Norma 202 | <<locked>> | 84% | 52,127 psi | 86% | 3150 fps | 100% |
| Norma 203B | <<locked>> | 88% | 53,954 psi | 89% | 3238 fps | 99.9% |
| Norma URP | <<locked>> | 96% | 52,127 psi | 86% | 3245 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 88% | 54,650 psi | 90% | 3264 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 54,592 psi | 90% | 3301 fps | 98.6% |
| Ramshot TAC | <<locked>> | 82% | 52,069 psi | 85% | 3163 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 51,793 psi | 85% | 3186 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,969 psi | 59% | 2073 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 52,518 psi | 86% | 3176 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 51,517 psi | 85% | 3261 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 51,343 psi | 84% | 3301 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 52,721 psi | 87% | 3278 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 52,272 psi | 86% | 3307 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 82% | 52,170 psi | 86% | 3127 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 52,011 psi | 85% | 3143 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 54,795 psi | 90% | 3235 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 54,824 psi | 90% | 3209 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 52,837 psi | 87% | 3182 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 84% | 52,620 psi | 86% | 3173 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 53,388 psi | 88% | 3186 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 53,911 psi | 89% | 3219 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 53,055 psi | 87% | 3241 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,114 psi | 89% | 3202 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,940 psi | 90% | 3228 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 52,968 psi | 87% | 3084 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 53,519 psi | 88% | 3081 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 53,011 psi | 87% | 3127 fps | 97.4% |
| Somchem S335 | <<locked>> | 84% | 52,489 psi | 86% | 3081 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 53,809 psi | 88% | 3189 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 54,969 psi | 90% | 3235 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,983 psi | 89% | 3307 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,792 psi | 82% | 3166 fps | 96.2% |
| Vihtavuori N133 | <<locked>> | 84% | 53,359 psi | 88% | 3068 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 51,909 psi | 85% | 3107 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 52,895 psi | 87% | 3127 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 53,113 psi | 87% | 3156 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,621 psi | 90% | 3245 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 82% | 52,156 psi | 86% | 3150 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,462 psi | 89% | 3169 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 53,505 psi | 88% | 3245 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,701 psi | 75% | 3166 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,882 psi | 90% | 3215 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 52,214 psi | 86% | 3199 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 52,431 psi | 86% | 3258 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,057 psi | 61% | 3087 fps | 99.1% |
| Winchester StaBALL Match | <<locked>> | 86% | 54,911 psi | 90% | 3238 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 2015 | <<locked>> | 80% | 50,212 psi | 82% | 3045 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,554 psi | 70% | 2953 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,386 psi | 83% | 3130 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 48,211 psi | 79% | 3045 fps | 95.5% |
| Accurate 3100 | <<locked>> | 98% | 40,466 psi | 66% | 2982 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 40,277 psi | 66% | 2946 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 34,214 psi | 56% | 2858 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 46,398 psi | 76% | 3081 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 39,363 psi | 65% | 2910 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,559 psi | 80% | 3094 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 49,153 psi | 81% | 3074 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,598 psi | 70% | 3120 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,088 psi | 64% | 2933 fps | 98.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,018 psi | 69% | 3009 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,490 psi | 57% | 2881 fps | 95.3% |
| Alliant Reloder-17 | 63.7 gr | 80% | 33,895 psi | 56% | 2894 fps | 97% |
| Alliant Reloder-23 | <<locked>> | 92% | 31,850 psi | 52% | 2825 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 94% | 37,492 psi | 62% | 3041 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,934 psi | 75% | 3084 fps | 98.5% |
| Bofors RP3 | <<locked>> | 80% | 38,841 psi | 64% | 2936 fps | 98.8% |
| Bofors RP7 | <<locked>> | 90% | 48,182 psi | 79% | 3087 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,183 psi | 82% | 3081 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,819 psi | 79% | 3114 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,595 psi | 65% | 2940 fps | 96.4% |
| Hodgdon H414 | <<locked>> | 90% | 45,527 psi | 75% | 3120 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 90% | 49,255 psi | 81% | 3146 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 46,862 psi | 77% | 3097 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,559 psi | 49% | 2700 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,091 psi | 71% | 3061 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 90% | 45,411 psi | 75% | 3136 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,397 psi | 43% | 1814 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,962 psi | 74% | 3038 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 46,818 psi | 77% | 3091 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,292 psi | 68% | 2949 fps | 98.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,903 psi | 72% | 2972 fps | 95.2% |
| IMR 4350 | <<locked>> | 92% | 45,687 psi | 75% | 3058 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,237 psi | 73% | 3009 fps | 95.2% |
| IMR 4831 | <<locked>> | 86% | 35,592 psi | 58% | 2877 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 43,062 psi | 71% | 3041 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 80% | 48,559 psi | 80% | 3094 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 45,847 psi | 75% | 3058 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,311 psi | 76% | 3015 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 41,307 psi | 68% | 2953 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 38,508 psi | 63% | 2884 fps | 95.1% |
| Lovex S070 | <<locked>> | 90% | 44,425 psi | 73% | 3035 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 45,281 psi | 74% | 3028 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 45,745 psi | 75% | 3035 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,365 psi | 68% | 2992 fps | 98.5% |
| Norma URP | <<locked>> | 84% | 34,722 psi | 57% | 2867 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 41,321 psi | 68% | 3009 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 41,481 psi | 68% | 3038 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 48,733 psi | 80% | 3100 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,385 psi | 79% | 3123 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,731 psi | 44% | 1857 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,815 psi | 70% | 2982 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,744 psi | 73% | 3127 fps | 98.7% |
| ReloadSwiss RS 60 | 63.7 gr | 80% | 36,158 psi | 59% | 2972 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 36,796 psi | 60% | 2946 fps | 95.7% |
| ReloadSwiss RS 70 | 71.1 gr | 88% | 39,320 psi | 65% | 3025 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 49,153 psi | 81% | 3074 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,960 psi | 71% | 2972 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 36,492 psi | 60% | 2874 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 48,182 psi | 79% | 3087 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 38,508 psi | 63% | 2884 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,847 psi | 75% | 3058 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,307 psi | 68% | 2953 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 44,425 psi | 73% | 3035 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,681 psi | 62% | 2930 fps | 97.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,862 psi | 77% | 3068 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,020 psi | 74% | 3048 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,572 psi | 76% | 2976 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,841 psi | 64% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,250 psi | 71% | 2943 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 46,253 psi | 76% | 2976 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,731 psi | 77% | 3064 fps | 99.3% |
| Somchem S355 | <<locked>> | 80% | 37,231 psi | 61% | 2881 fps | 98% |
| Somchem S365 | <<locked>> | 80% | 26,977 psi | 44% | 2677 fps | 95.3% |
| Somchem S385 | <<locked>> | 98% | 46,601 psi | 77% | 3107 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 47,021 psi | 77% | 2966 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,699 psi | 70% | 2953 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,482 psi | 71% | 2966 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,534 psi | 58% | 2812 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 84% | 36,158 psi | 59% | 2871 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 48,805 psi | 80% | 3091 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,785 psi | 69% | 2946 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 35,621 psi | 58% | 2867 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 90% | 32,372 psi | 53% | 2851 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,415 psi | 52% | 2717 fps | 96.2% |
| Winchester 748 | <<locked>> | 80% | 48,675 psi | 80% | 3136 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 42,612 psi | 70% | 3058 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,197 psi | 50% | 2854 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,643 psi | 73% | 3051 fps | 99.4% |
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 92 powders for .300 Blaser Mag. loaded with the .308 | 139gr | RWS Evolution Green. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,327 fps; across all powders the maximum-charge window runs from 2,028 fps to 3,327 fps. Accurate 3100 gives the best case fill at 100 %, and 92 of the 92 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.308" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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-17, ReloadSwiss RS 60 rank at the top here: for .300 Blaser Mag. with the .308 | 139gr | RWS Evolution Green 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.