Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 132gr | Brenneke TIG nature bullet and 91 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, ReloadSwiss RS 60 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.
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 2015 | <<locked>> | 82% | 53,359 psi | 88% | 3179 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 51,909 psi | 85% | 3192 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,027 psi | 89% | 3271 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 51,401 psi | 84% | 3182 fps | 96% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,395 psi | 71% | 3117 fps | 96% |
| Accurate 4064 | <<locked>> | 88% | 52,330 psi | 86% | 3248 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 52,591 psi | 86% | 3333 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 84% | 52,649 psi | 86% | 3284 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 90% | 54,085 psi | 89% | 3287 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,071 psi | 90% | 3287 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 52,576 psi | 86% | 3212 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 52,663 psi | 86% | 3412 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,114 psi | 89% | 3310 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,607 psi | 90% | 3333 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,085 psi | 89% | 3406 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 51,619 psi | 85% | 3379 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,263 psi | 68% | 3150 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,876 psi | 77% | 3346 fps | 98.4% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 52,605 psi | 86% | 3294 fps | 99.3% |
| Bofors RP3 | <<locked>> | 90% | 54,679 psi | 90% | 3323 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,723 psi | 90% | 3291 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 82% | 53,301 psi | 88% | 3215 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,723 psi | 90% | 3317 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 52,054 psi | 85% | 3278 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 94% | 52,098 psi | 86% | 3327 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 84% | 53,229 psi | 87% | 3297 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,911 psi | 89% | 3320 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 53,055 psi | 87% | 3330 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 52,692 psi | 87% | 3363 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,302 psi | 58% | 2090 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,650 psi | 90% | 3304 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 53,287 psi | 87% | 3284 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 53,301 psi | 88% | 3264 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 86% | 53,287 psi | 87% | 3241 fps | 97.2% |
| IMR 4350 | <<locked>> | 96% | 51,895 psi | 85% | 3255 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 53,214 psi | 87% | 3268 fps | 97.1% |
| IMR 4831 | <<locked>> | 98% | 53,403 psi | 88% | 3327 fps | 99.4% |
| IMR 4895 | <<locked>> | 86% | 52,446 psi | 86% | 3307 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 84% | 55,071 psi | 90% | 3287 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 52,373 psi | 86% | 3255 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 52,141 psi | 86% | 3205 fps | 99.7% |
| Lovex S062 | <<locked>> | 88% | 53,156 psi | 87% | 3261 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 52,765 psi | 87% | 3261 fps | 98.3% |
| Lovex S070 | <<locked>> | 96% | 53,664 psi | 88% | 3294 fps | 97.6% |
| Norma 201 | <<locked>> | 86% | 54,650 psi | 90% | 3281 fps | 100% |
| Norma 202 | <<locked>> | 84% | 52,112 psi | 86% | 3228 fps | 100% |
| Norma 203B | <<locked>> | 88% | 53,853 psi | 88% | 3320 fps | 99.9% |
| Norma URP | <<locked>> | 96% | 51,895 psi | 85% | 3323 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 88% | 54,708 psi | 90% | 3343 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 54,476 psi | 89% | 3376 fps | 98.4% |
| Ramshot TAC | <<locked>> | 82% | 51,967 psi | 85% | 3241 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 51,692 psi | 85% | 3264 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,911 psi | 59% | 2142 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 52,257 psi | 86% | 3251 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 51,445 psi | 84% | 3340 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,027 psi | 90% | 3445 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 52,620 psi | 86% | 3356 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 52,286 psi | 86% | 3389 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 82% | 51,967 psi | 85% | 3205 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 51,953 psi | 85% | 3225 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 54,534 psi | 90% | 3314 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 54,723 psi | 90% | 3291 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 94% | 52,765 psi | 87% | 3261 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 52,373 psi | 86% | 3255 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 53,156 psi | 87% | 3261 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 53,664 psi | 88% | 3294 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 52,895 psi | 87% | 3320 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 53,896 psi | 88% | 3278 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,781 psi | 90% | 3310 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 52,692 psi | 87% | 3163 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 53,359 psi | 88% | 3159 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 52,823 psi | 87% | 3202 fps | 97.2% |
| Somchem S335 | <<locked>> | 84% | 52,286 psi | 86% | 3159 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 53,606 psi | 88% | 3268 fps | 99.8% |
| Somchem S355 | <<locked>> | 92% | 54,781 psi | 90% | 3314 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,940 psi | 89% | 3389 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,690 psi | 82% | 3241 fps | 95.9% |
| Vihtavuori N133 | <<locked>> | 84% | 53,055 psi | 87% | 3150 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 51,692 psi | 85% | 3189 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 52,721 psi | 87% | 3205 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 52,823 psi | 87% | 3235 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,317 psi | 89% | 3320 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 82% | 52,083 psi | 86% | 3232 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,462 psi | 89% | 3251 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 53,534 psi | 88% | 3327 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,716 psi | 75% | 3241 fps | 98.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,897 psi | 90% | 3294 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 52,243 psi | 86% | 3281 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 52,315 psi | 86% | 3330 fps | 97.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,898 psi | 61% | 3146 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 54,868 psi | 90% | 3317 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% | 50,053 psi | 82% | 3127 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,322 psi | 69% | 3025 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,198 psi | 82% | 3209 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 48,124 psi | 79% | 3120 fps | 95.1% |
| Accurate 3100 | <<locked>> | 98% | 40,292 psi | 66% | 3048 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 40,059 psi | 66% | 3018 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 36,738 psi | 60% | 2995 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 46,296 psi | 76% | 3159 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 39,175 psi | 64% | 2979 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,457 psi | 80% | 3173 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 48,921 psi | 80% | 3156 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,467 psi | 70% | 3192 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,015 psi | 64% | 3005 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,872 psi | 69% | 3081 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 36,593 psi | 60% | 3015 fps | 95.8% |
| Alliant Reloder-17 | 65.9 gr | 80% | 33,808 psi | 56% | 2959 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 92% | 31,705 psi | 52% | 2887 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 94% | 37,420 psi | 61% | 3107 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,905 psi | 75% | 3163 fps | 98.3% |
| Bofors RP3 | <<locked>> | 80% | 38,682 psi | 64% | 3005 fps | 98.5% |
| Bofors RP7 | <<locked>> | 90% | 48,080 psi | 79% | 3163 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,951 psi | 82% | 3156 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,630 psi | 78% | 3192 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,581 psi | 65% | 3012 fps | 96% |
| Hodgdon H414 | <<locked>> | 90% | 45,426 psi | 75% | 3196 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 46,731 psi | 77% | 3173 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 31,517 psi | 52% | 2828 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,989 psi | 71% | 3133 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 92% | 48,979 psi | 80% | 3287 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,339 psi | 43% | 1877 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,889 psi | 74% | 3117 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 46,601 psi | 77% | 3169 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,147 psi | 68% | 3022 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 46,760 psi | 77% | 3114 fps | 95.7% |
| IMR 4350 | <<locked>> | 94% | 48,776 psi | 80% | 3196 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 46,891 psi | 77% | 3140 fps | 95.6% |
| IMR 4831 | <<locked>> | 86% | 35,592 psi | 58% | 2946 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 42,946 psi | 71% | 3117 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 80% | 48,457 psi | 80% | 3173 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 45,614 psi | 75% | 3133 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,108 psi | 76% | 3091 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 41,118 psi | 68% | 3028 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 40,814 psi | 67% | 3012 fps | 95.5% |
| Lovex S070 | <<locked>> | 90% | 44,324 psi | 73% | 3107 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 45,063 psi | 74% | 3104 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 45,716 psi | 75% | 3114 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,263 psi | 68% | 3068 fps | 98.3% |
| Norma URP | <<locked>> | 86% | 37,043 psi | 61% | 2999 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 41,147 psi | 68% | 3081 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 41,394 psi | 68% | 3110 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 48,515 psi | 80% | 3173 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,196 psi | 79% | 3199 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,629 psi | 44% | 1919 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,699 psi | 70% | 3058 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,469 psi | 73% | 3202 fps | 98.4% |
| ReloadSwiss RS 60 | 65.9 gr | 80% | 36,027 psi | 59% | 3041 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 36,622 psi | 60% | 3012 fps | 95.3% |
| ReloadSwiss RS 70 | 73.6 gr | 88% | 39,349 psi | 65% | 3094 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 48,820 psi | 80% | 3153 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,801 psi | 70% | 3045 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 36,245 psi | 60% | 2940 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 48,080 psi | 79% | 3163 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 86% | 40,814 psi | 67% | 3012 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,614 psi | 75% | 3133 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,118 psi | 68% | 3028 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 44,324 psi | 73% | 3107 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,463 psi | 62% | 2995 fps | 97.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,862 psi | 77% | 3146 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,788 psi | 74% | 3120 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,485 psi | 76% | 3054 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,740 psi | 64% | 2894 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 46,253 psi | 76% | 3077 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 46,035 psi | 76% | 3051 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,688 psi | 77% | 3140 fps | 99.1% |
| Somchem S355 | <<locked>> | 80% | 37,028 psi | 61% | 2946 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 28,747 psi | 47% | 2802 fps | 95.9% |
| Somchem S385 | <<locked>> | 98% | 46,557 psi | 76% | 3179 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 46,920 psi | 77% | 3048 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,583 psi | 70% | 3031 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,221 psi | 71% | 3038 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,317 psi | 58% | 2874 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 84% | 36,056 psi | 59% | 2940 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 48,646 psi | 80% | 3169 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 41,800 psi | 69% | 3022 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 38,174 psi | 63% | 3005 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 92% | 34,534 psi | 57% | 2979 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,430 psi | 52% | 2782 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 48,573 psi | 80% | 3219 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 45,614 psi | 75% | 3199 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,124 psi | 49% | 2913 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,469 psi | 73% | 3127 fps | 99.2% |
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 111 powders for .300 Blaser Mag. loaded with the .308 | 132gr | Brenneke TIG nature. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,445 fps; across all powders the maximum-charge window runs from 2,090 fps to 3,445 fps. Accurate 3100 gives the best case fill at 100 %, and 111 of the 111 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 132.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .300 Blaser Mag. with the .308 | 132gr | Brenneke TIG nature they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate High Country, ADI AR 2209, Alliant Reloder-19 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.