Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 125gr | Barnes Solid 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-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% | 53,345 psi | 88% | 3251 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 52,344 psi | 86% | 3271 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 53,954 psi | 89% | 3343 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,071 psi | 90% | 3314 fps | 96.2% |
| Accurate 4064 | <<locked>> | 88% | 52,620 psi | 86% | 3323 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 52,692 psi | 87% | 3402 fps | 99% |
| ADI AR 2206H | <<locked>> | 84% | 52,562 psi | 86% | 3350 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 90% | 53,795 psi | 88% | 3350 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,897 psi | 90% | 3360 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 52,272 psi | 86% | 3284 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 52,373 psi | 86% | 3474 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 53,867 psi | 88% | 3376 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,360 psi | 89% | 3402 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 98% | 53,693 psi | 88% | 3468 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,027 psi | 90% | 3510 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,176 psi | 68% | 3209 fps | 98.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,702 psi | 77% | 3399 fps | 97.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 52,431 psi | 86% | 3356 fps | 99% |
| Bofors RP3 | <<locked>> | 90% | 54,694 psi | 90% | 3396 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,665 psi | 90% | 3353 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 53,055 psi | 87% | 3284 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,679 psi | 90% | 3386 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 51,880 psi | 85% | 3340 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 94% | 51,822 psi | 85% | 3389 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 84% | 53,127 psi | 87% | 3366 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,737 psi | 88% | 3389 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 52,895 psi | 87% | 3399 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 94% | 52,388 psi | 86% | 3422 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,462 psi | 58% | 2149 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,360 psi | 89% | 3369 fps | 99.9% |
| IMR 3031 | <<locked>> | 84% | 53,171 psi | 87% | 3360 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 53,301 psi | 88% | 3333 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 86% | 53,055 psi | 87% | 3301 fps | 96.6% |
| IMR 4350 | <<locked>> | 98% | 55,056 psi | 90% | 3376 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 53,084 psi | 87% | 3327 fps | 96.6% |
| IMR 4831 | <<locked>> | 98% | 53,345 psi | 88% | 3396 fps | 99.1% |
| IMR 4895 | <<locked>> | 86% | 52,257 psi | 86% | 3376 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 84% | 54,897 psi | 90% | 3360 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 52,518 psi | 86% | 3327 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 52,054 psi | 85% | 3271 fps | 99.5% |
| Lovex S062 | <<locked>> | 88% | 53,127 psi | 87% | 3333 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 52,794 psi | 87% | 3327 fps | 97.9% |
| Lovex S070 | <<locked>> | 96% | 53,795 psi | 88% | 3363 fps | 97.1% |
| Norma 201 | <<locked>> | 86% | 54,694 psi | 90% | 3353 fps | 100% |
| Norma 202 | <<locked>> | 84% | 51,866 psi | 85% | 3297 fps | 100% |
| Norma 203B | <<locked>> | 88% | 53,621 psi | 88% | 3386 fps | 99.7% |
| Norma URP | <<locked>> | 96% | 51,866 psi | 85% | 3389 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 88% | 54,389 psi | 89% | 3412 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 98% | 54,172 psi | 89% | 3438 fps | 97.9% |
| Ramshot TAC | <<locked>> | 82% | 51,750 psi | 85% | 3304 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,114 psi | 90% | 3392 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,897 psi | 59% | 2198 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 52,185 psi | 86% | 3314 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,998 psi | 90% | 3478 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 54,853 psi | 90% | 3514 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 52,460 psi | 86% | 3419 fps | 98.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 52,040 psi | 85% | 3448 fps | 98.5% |
| Rottweil R 901 | <<locked>> | 82% | 52,359 psi | 86% | 3284 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 52,098 psi | 86% | 3294 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 92% | 54,549 psi | 90% | 3386 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 94% | 54,665 psi | 90% | 3353 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 52,794 psi | 87% | 3327 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 52,518 psi | 86% | 3327 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 53,127 psi | 87% | 3333 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 53,795 psi | 88% | 3363 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 52,663 psi | 86% | 3386 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 53,925 psi | 89% | 3343 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,723 psi | 90% | 3379 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 52,678 psi | 86% | 3235 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 53,156 psi | 87% | 3232 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 52,939 psi | 87% | 3268 fps | 96.7% |
| Somchem S335 | <<locked>> | 84% | 52,344 psi | 86% | 3232 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 53,461 psi | 88% | 3333 fps | 99.6% |
| Somchem S355 | <<locked>> | 92% | 54,752 psi | 90% | 3383 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,447 psi | 88% | 3451 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 52,982 psi | 87% | 3222 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 55,071 psi | 90% | 3317 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 52,591 psi | 86% | 3274 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 52,808 psi | 87% | 3301 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,215 psi | 89% | 3386 fps | 99% |
| Vihtavuori N530 | <<locked>> | 82% | 52,025 psi | 85% | 3301 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 88% | 54,215 psi | 89% | 3320 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 53,243 psi | 87% | 3386 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,542 psi | 75% | 3304 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,578 psi | 90% | 3360 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 51,967 psi | 85% | 3350 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 52,025 psi | 85% | 3392 fps | 96.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,188 psi | 61% | 3209 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 86% | 54,505 psi | 89% | 3383 fps | 99.9% |
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% | 50,096 psi | 82% | 3199 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,018 psi | 71% | 3104 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,256 psi | 83% | 3278 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 51,430 psi | 84% | 3248 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 40,640 psi | 67% | 3094 fps | 99.9% |
| Accurate 4350 | <<locked>> | 86% | 36,941 psi | 61% | 3058 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 46,354 psi | 76% | 3228 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 80% | 39,305 psi | 65% | 3045 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,443 psi | 80% | 3238 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 48,950 psi | 80% | 3232 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,351 psi | 70% | 3251 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,073 psi | 64% | 3071 fps | 98.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,032 psi | 69% | 3150 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 36,637 psi | 60% | 3071 fps | 95.1% |
| Alliant Reloder-17 | 66.8 gr | 80% | 33,939 psi | 56% | 3022 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 34,113 psi | 56% | 3015 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 96% | 40,364 psi | 66% | 3245 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,759 psi | 75% | 3225 fps | 97.9% |
| Bofors RP3 | <<locked>> | 80% | 38,827 psi | 64% | 3071 fps | 98.1% |
| Bofors RP7 | <<locked>> | 92% | 51,242 psi | 84% | 3291 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,980 psi | 82% | 3228 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,601 psi | 78% | 3258 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 39,610 psi | 65% | 3074 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 92% | 48,472 psi | 80% | 3323 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 46,833 psi | 77% | 3245 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 31,720 psi | 52% | 2890 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,931 psi | 70% | 3202 fps | 99% |
| Hodgdon Superformance | <<locked>> | 92% | 48,834 psi | 80% | 3346 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,310 psi | 43% | 1926 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,715 psi | 73% | 3179 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 46,485 psi | 76% | 3238 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,278 psi | 68% | 3087 fps | 97.4% |
| IMR 4166 Enduron | <<locked>> | 82% | 46,702 psi | 77% | 3173 fps | 95.1% |
| IMR 4350 | <<locked>> | 94% | 48,617 psi | 80% | 3255 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 88% | 46,934 psi | 77% | 3205 fps | 95% |
| IMR 4831 | <<locked>> | 88% | 38,203 psi | 63% | 3071 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 43,091 psi | 71% | 3186 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 80% | 48,443 psi | 80% | 3238 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 45,745 psi | 75% | 3202 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,006 psi | 76% | 3153 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 41,220 psi | 68% | 3094 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 43,685 psi | 72% | 3140 fps | 95.8% |
| Lovex S070 | <<locked>> | 92% | 47,268 psi | 78% | 3235 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 45,368 psi | 74% | 3173 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 45,658 psi | 75% | 3182 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,423 psi | 68% | 3133 fps | 97.9% |
| Norma URP | <<locked>> | 86% | 37,101 psi | 61% | 3061 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 41,104 psi | 67% | 3143 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 92% | 44,338 psi | 73% | 3238 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 48,428 psi | 80% | 3238 fps | 97.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,051 psi | 79% | 3264 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,789 psi | 44% | 1975 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 45,730 psi | 75% | 3182 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,382 psi | 73% | 3268 fps | 98% |
| ReloadSwiss RS 60 | 66.8 gr | 80% | 36,129 psi | 59% | 3104 fps | 99% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 39,523 psi | 65% | 3143 fps | 95.7% |
| ReloadSwiss RS 70 | 76.3 gr | 90% | 42,192 psi | 69% | 3225 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 49,298 psi | 81% | 3228 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,134 psi | 71% | 3117 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 36,637 psi | 60% | 3009 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 92% | 51,242 psi | 84% | 3291 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 43,685 psi | 72% | 3140 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,745 psi | 75% | 3202 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,220 psi | 68% | 3094 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 92% | 47,268 psi | 78% | 3235 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,507 psi | 62% | 3058 fps | 96.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,891 psi | 77% | 3209 fps | 97.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,802 psi | 74% | 3186 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,514 psi | 76% | 3123 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,798 psi | 64% | 2963 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 46,383 psi | 76% | 3140 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 46,253 psi | 76% | 3120 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,586 psi | 76% | 3205 fps | 98.8% |
| Somchem S355 | <<locked>> | 80% | 37,347 psi | 61% | 3015 fps | 97.2% |
| Somchem S365 | <<locked>> | 82% | 29,051 psi | 48% | 2864 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 46,833 psi | 77% | 3117 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,641 psi | 70% | 3100 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,337 psi | 71% | 3107 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,578 psi | 58% | 2943 fps | 98.1% |
| Vihtavuori N160 | <<locked>> | 86% | 38,667 psi | 63% | 3064 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 48,472 psi | 80% | 3235 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 41,756 psi | 69% | 3087 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 38,189 psi | 63% | 3064 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 92% | 34,737 psi | 57% | 3041 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,604 psi | 52% | 2841 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 48,443 psi | 80% | 3284 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 48,675 psi | 80% | 3327 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 96% | 32,489 psi | 53% | 3045 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,440 psi | 73% | 3189 fps | 98.9% |
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 89 powders for .300 Blaser Mag. loaded with the .308 | 125gr | Barnes Solid. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,514 fps; across all powders the maximum-charge window runs from 2,149 fps to 3,514 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 89 of the 89 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 125.0 gr projectile in 0.308" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, Hodgdon Hybrid 100V 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 | 125gr | Barnes Solid 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.