Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 120gr | GM Geschoss-Manufaktur Splinter TIP bullet and 90 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, 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>> | 84% | 53,490 psi | 88% | 3323 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 52,011 psi | 85% | 3337 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,143 psi | 89% | 3412 fps | 100% |
| Accurate 4064 | <<locked>> | 90% | 52,098 psi | 86% | 3386 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 52,475 psi | 86% | 3461 fps | 98.7% |
| ADI AR 2206H | <<locked>> | 86% | 53,026 psi | 87% | 3425 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 92% | 54,273 psi | 89% | 3422 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 52,054 psi | 85% | 3373 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 84% | 52,402 psi | 86% | 3356 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 52,881 psi | 87% | 3547 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 54,012 psi | 89% | 3445 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,607 psi | 90% | 3471 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 54,027 psi | 89% | 3533 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 94% | 51,590 psi | 85% | 3510 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,247 psi | 63% | 3189 fps | 97.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,279 psi | 71% | 3373 fps | 96.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 53,156 psi | 87% | 3432 fps | 98.8% |
| Bofors RP3 | <<locked>> | 92% | 54,665 psi | 90% | 3461 fps | 99.9% |
| Bofors RP7 | <<locked>> | 96% | 55,071 psi | 90% | 3419 fps | 96% |
| Hodgdon Benchmark | <<locked>> | 84% | 53,795 psi | 88% | 3360 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,056 psi | 90% | 3461 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 53,287 psi | 87% | 3507 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 90% | 52,228 psi | 86% | 3409 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 96% | 52,112 psi | 86% | 3455 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 86% | 53,563 psi | 88% | 3438 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,154 psi | 82% | 3386 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 53,200 psi | 87% | 3471 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,027 psi | 57% | 2185 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,868 psi | 90% | 3442 fps | 99.8% |
| IMR 3031 | <<locked>> | 86% | 53,287 psi | 87% | 3428 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 53,693 psi | 88% | 3406 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,650 psi | 88% | 3369 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 53,577 psi | 88% | 3396 fps | 96.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,127 psi | 87% | 3448 fps | 98.8% |
| IMR 4895 | <<locked>> | 88% | 52,605 psi | 86% | 3445 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 84% | 52,054 psi | 85% | 3373 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 86% | 52,634 psi | 86% | 3396 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 52,634 psi | 86% | 3343 fps | 99.4% |
| Lovex S062 | <<locked>> | 90% | 53,243 psi | 87% | 3399 fps | 99.9% |
| Lovex S065 | <<locked>> | 96% | 52,736 psi | 87% | 3386 fps | 97.5% |
| Lovex S070 | <<locked>> | 98% | 53,693 psi | 88% | 3419 fps | 96.7% |
| Norma 201 | <<locked>> | 88% | 55,114 psi | 90% | 3425 fps | 100% |
| Norma 202 | <<locked>> | 86% | 52,286 psi | 86% | 3373 fps | 100% |
| Norma 203B | <<locked>> | 90% | 53,795 psi | 88% | 3455 fps | 99.5% |
| Norma URP | <<locked>> | 98% | 51,677 psi | 85% | 3448 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 90% | 54,795 psi | 90% | 3478 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 54,404 psi | 89% | 3504 fps | 97.6% |
| Ramshot TAC | <<locked>> | 84% | 52,504 psi | 86% | 3376 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 52,112 psi | 86% | 3402 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 82% | 52,997 psi | 87% | 3366 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,360 psi | 58% | 2234 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,882 psi | 90% | 3415 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 52,678 psi | 86% | 3383 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,114 psi | 90% | 3547 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 55,056 psi | 90% | 3586 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 52,518 psi | 86% | 3484 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 52,330 psi | 86% | 3510 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 84% | 52,315 psi | 86% | 3353 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 52,185 psi | 86% | 3363 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 94% | 54,520 psi | 90% | 3448 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 96% | 55,071 psi | 90% | 3419 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 96% | 52,736 psi | 87% | 3386 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 52,634 psi | 86% | 3396 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 53,243 psi | 87% | 3399 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 98% | 53,693 psi | 88% | 3419 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 53,040 psi | 87% | 3455 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,346 psi | 89% | 3412 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,071 psi | 90% | 3448 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 53,258 psi | 87% | 3307 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 53,722 psi | 88% | 3301 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 53,098 psi | 87% | 3327 fps | 96.2% |
| Somchem S321 | <<locked>> | 82% | 53,330 psi | 88% | 3406 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 52,576 psi | 86% | 3301 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 54,201 psi | 89% | 3409 fps | 99.5% |
| Somchem S355 | <<locked>> | 94% | 54,897 psi | 90% | 3451 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,588 psi | 81% | 3451 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 52,837 psi | 87% | 3271 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 53,519 psi | 88% | 3294 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 51,793 psi | 85% | 3333 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 52,866 psi | 87% | 3346 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 52,997 psi | 87% | 3369 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 54,418 psi | 89% | 3451 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 84% | 52,373 psi | 86% | 3369 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 90% | 54,752 psi | 90% | 3392 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 53,330 psi | 88% | 3448 fps | 98.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,858 psi | 69% | 3284 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 55,071 psi | 90% | 3425 fps | 99.9% |
| Winchester 748 | <<locked>> | 84% | 52,359 psi | 86% | 3422 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 52,112 psi | 86% | 3455 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,984 psi | 90% | 3455 fps | 99.8% |
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% | 47,079 psi | 77% | 3212 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,407 psi | 65% | 3097 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,992 psi | 77% | 3284 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 37,260 psi | 61% | 3081 fps | 99.5% |
| Accurate 4350 | <<locked>> | 90% | 39,044 psi | 64% | 3173 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 43,598 psi | 72% | 3228 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 36,927 psi | 61% | 3041 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,745 psi | 75% | 3248 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 45,701 psi | 75% | 3245 fps | 100% |
| Alliant Power Pro 2000-MR | 67.3 gr | 80% | 39,740 psi | 65% | 3241 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,376 psi | 60% | 3061 fps | 96.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,276 psi | 64% | 3140 fps | 96.3% |
| Alliant Reloder-16 | <<locked>> | 90% | 39,044 psi | 64% | 3192 fps | 95.5% |
| Alliant Reloder-17 | 67.9 gr | 82% | 33,765 psi | 55% | 3071 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 33,591 psi | 55% | 3051 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 40,161 psi | 66% | 3291 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,047 psi | 71% | 3222 fps | 96.8% |
| Bofors RP3 | <<locked>> | 80% | 35,853 psi | 59% | 3058 fps | 96.9% |
| Bofors RP7 | <<locked>> | 94% | 51,503 psi | 85% | 3350 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,427 psi | 78% | 3241 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,614 psi | 73% | 3261 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,545 psi | 81% | 3435 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 84% | 42,525 psi | 70% | 3202 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 94% | 48,457 psi | 80% | 3379 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 44,034 psi | 72% | 3245 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 33,475 psi | 55% | 2995 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,089 psi | 66% | 3196 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,976 psi | 43% | 1959 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,148 psi | 69% | 3182 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 43,366 psi | 71% | 3245 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,740 psi | 64% | 3084 fps | 96.2% |
| IMR 4166 Enduron | <<locked>> | 86% | 50,473 psi | 83% | 3310 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 50,444 psi | 83% | 3333 fps | 95.5% |
| IMR 4831 | <<locked>> | 90% | 37,782 psi | 62% | 3120 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 40,277 psi | 66% | 3179 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 80% | 45,745 psi | 75% | 3248 fps | 99.2% |
| Lovex D073.6 | <<locked>> | 80% | 42,554 psi | 70% | 3202 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 43,555 psi | 72% | 3159 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 38,464 psi | 63% | 3087 fps | 97.9% |
| Lovex S065 | <<locked>> | 90% | 43,569 psi | 72% | 3196 fps | 95.3% |
| Lovex S070 | <<locked>> | 94% | 47,181 psi | 77% | 3291 fps | 95% |
| Norma 201 | <<locked>> | 80% | 42,482 psi | 70% | 3176 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 42,801 psi | 70% | 3189 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 38,653 psi | 63% | 3127 fps | 96.7% |
| Norma URP | <<locked>> | 90% | 39,392 psi | 65% | 3179 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 38,348 psi | 63% | 3133 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 94% | 44,251 psi | 73% | 3291 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 45,788 psi | 75% | 3238 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,295 psi | 74% | 3264 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,516 psi | 81% | 3301 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,194 psi | 43% | 2005 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,358 psi | 84% | 3353 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 45,963 psi | 75% | 3248 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,263 psi | 68% | 3258 fps | 96.8% |
| ReloadSwiss RS 60 | 66.2 gr | 80% | 33,504 psi | 55% | 3081 fps | 97.8% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 39,059 psi | 64% | 3192 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,351 psi | 70% | 3284 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 46,137 psi | 76% | 3235 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,321 psi | 66% | 3114 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 80% | 33,707 psi | 55% | 2989 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 94% | 51,503 psi | 85% | 3350 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 43,569 psi | 72% | 3196 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,554 psi | 70% | 3202 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 38,464 psi | 63% | 3087 fps | 97.9% |
| Shooters World SW4350 | <<locked>> | 94% | 47,181 psi | 77% | 3291 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,925 psi | 57% | 3048 fps | 95.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,976 psi | 72% | 3205 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,148 psi | 69% | 3186 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,859 psi | 72% | 3133 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,376 psi | 60% | 2966 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 49,806 psi | 82% | 3264 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 49,705 psi | 82% | 3340 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 43,569 psi | 72% | 3133 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,801 psi | 72% | 3209 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 34,664 psi | 57% | 3002 fps | 95.8% |
| Somchem S365 | <<locked>> | 86% | 30,545 psi | 50% | 2972 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 49,632 psi | 81% | 3219 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,208 psi | 73% | 3130 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,668 psi | 65% | 3104 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,625 psi | 67% | 3110 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 32,996 psi | 54% | 2930 fps | 96.8% |
| Vihtavuori N160 | <<locked>> | 88% | 38,566 psi | 63% | 3120 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 45,672 psi | 75% | 3238 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 39,102 psi | 64% | 3087 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 90% | 40,683 psi | 67% | 3182 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 96% | 36,347 psi | 60% | 3146 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 33,895 psi | 56% | 2959 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 45,469 psi | 75% | 3291 fps | 99.7% |
| Winchester 760 | <<locked>> | 94% | 48,646 psi | 80% | 3386 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,669 psi | 68% | 3189 fps | 98.1% |
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 90 powders for .300 Blaser Mag. loaded with the .308 | 120gr | GM Geschoss-Manufaktur Splinter TIP. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,586 fps; across all powders the maximum-charge window runs from 2,185 fps to 3,586 fps. Alliant Reloder-16 gives the best case fill at 100 %, and 90 of the 90 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .300 Blaser Mag. with the .308 | 120gr | GM Geschoss-Manufaktur Splinter TIP 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.