Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 88gr | Inceptor SRR bullet and 81 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon LEVERevolution, Norma 203B and Hodgdon H4895.
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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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 90% | 53,606 psi | 88% | 3770 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 53,737 psi | 88% | 3868 fps | 96.3% |
| Accurate 2230 | <<locked>> | 82% | 54,897 psi | 90% | 3875 fps | 97% |
| Accurate 2460 | <<locked>> | 86% | 52,156 psi | 86% | 3766 fps | 99.5% |
| Accurate 2495 | <<locked>> | 96% | 54,273 psi | 89% | 3819 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 54,114 psi | 89% | 3835 fps | 99.6% |
| Accurate 4064 | <<locked>> | 98% | 54,099 psi | 89% | 3855 fps | 99.9% |
| Accurate LT-30 | <<locked>> | 84% | 53,737 psi | 88% | 3720 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 54,128 psi | 89% | 3747 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 92% | 53,127 psi | 87% | 3835 fps | 97.2% |
| ADI AR 2207 | <<locked>> | 82% | 54,694 psi | 90% | 3770 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 54,404 psi | 89% | 3825 fps | 96.8% |
| ADI AR 2219 | <<locked>> | 84% | 54,389 psi | 89% | 3858 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 52,417 psi | 86% | 3793 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 90% | 51,314 psi | 84% | 3806 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 53,287 psi | 87% | 3930 fps | 97.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 53,127 psi | 87% | 3937 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 53,374 psi | 88% | 3845 fps | 98.2% |
| Alliant Reloder-10x | <<locked>> | 86% | 53,258 psi | 87% | 3799 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 54,331 psi | 89% | 3871 fps | 97% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 51,256 psi | 84% | 3888 fps | 97.5% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 53,388 psi | 88% | 3691 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 53,403 psi | 88% | 3832 fps | 96.2% |
| Bofors RP3 | <<locked>> | 98% | 53,751 psi | 88% | 3855 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 90% | 54,708 psi | 90% | 3793 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 90% | 51,401 psi | 84% | 3809 fps | 98.6% |
| Hodgdon CFE223 | <<locked>> | 88% | 52,881 psi | 87% | 3917 fps | 96.7% |
| Hodgdon H322 | <<locked>> | 86% | 52,794 psi | 87% | 3825 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 54,433 psi | 89% | 3845 fps | 99.8% |
| Hodgdon H4895 | <<locked>> | 92% | 53,577 psi | 88% | 3855 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 52,402 psi | 86% | 3868 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,707 psi | 55% | 2500 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 51,909 psi | 85% | 3796 fps | 97.5% |
| IMR 3031 | <<locked>> | 92% | 52,185 psi | 86% | 3865 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 53,563 psi | 88% | 3806 fps | 96.9% |
| IMR 4198 | <<locked>> | 86% | 53,722 psi | 88% | 3770 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 52,069 psi | 85% | 3845 fps | 97.1% |
| IMR 8208 XBR | <<locked>> | 90% | 52,417 psi | 86% | 3793 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 86% | 52,344 psi | 86% | 3770 fps | 98.9% |
| Lovex D073.6 | <<locked>> | 92% | 51,938 psi | 85% | 3806 fps | 99.4% |
| Lovex S060 | <<locked>> | 92% | 53,505 psi | 88% | 3763 fps | 97.3% |
| Lovex S062 | <<locked>> | 96% | 52,837 psi | 87% | 3806 fps | 98.4% |
| Norma 200 | <<locked>> | 82% | 52,910 psi | 87% | 3763 fps | 100% |
| Norma 201 | <<locked>> | 92% | 51,590 psi | 85% | 3773 fps | 98.1% |
| Norma 202 | <<locked>> | 92% | 52,098 psi | 86% | 3799 fps | 99.7% |
| Norma 203B | <<locked>> | 96% | 53,432 psi | 88% | 3855 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 96% | 54,462 psi | 89% | 3878 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 90% | 52,373 psi | 86% | 3812 fps | 97.1% |
| Ramshot X-Terminator | <<locked>> | 88% | 54,070 psi | 89% | 3786 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,779 psi | 55% | 2552 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 51,938 psi | 85% | 3786 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 53,940 psi | 89% | 3944 fps | 96.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 54,839 psi | 90% | 3990 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 90% | 52,170 psi | 86% | 3780 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 94% | 51,938 psi | 85% | 3766 fps | 98.2% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 53,330 psi | 88% | 3835 fps | 98% |
| Shooters World Match Rifle | <<locked>> | 92% | 51,938 psi | 85% | 3806 fps | 99.4% |
| Shooters World Precision | <<locked>> | 96% | 52,837 psi | 87% | 3806 fps | 98.4% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 52,127 psi | 86% | 3737 fps | 97.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 53,650 psi | 88% | 3465 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 54,926 psi | 90% | 3855 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 52,475 psi | 86% | 3848 fps | 97.1% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 54,360 psi | 89% | 3825 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 51,837 psi | 85% | 3789 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 53,940 psi | 89% | 3743 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 53,751 psi | 88% | 3724 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 54,099 psi | 89% | 3835 fps | 98.8% |
| Somchem S335 | <<locked>> | 92% | 52,968 psi | 87% | 3730 fps | 99.9% |
| Somchem S341 | <<locked>> | 92% | 54,592 psi | 90% | 3812 fps | 97.5% |
| Somchem S355ᴾ | <<locked>> | 100% | 54,259 psi | 89% | 3845 fps | 98% |
| Vihtavuori N120 | <<locked>> | 82% | 54,563 psi | 90% | 3704 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 53,548 psi | 88% | 3727 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 53,751 psi | 88% | 3734 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 54,157 psi | 89% | 3819 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 52,794 psi | 87% | 3770 fps | 99.9% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 52,504 psi | 86% | 3760 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 90% | 53,084 psi | 87% | 3793 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 96% | 55,013 psi | 90% | 3819 fps | 99.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 48,457 psi | 80% | 3658 fps | 97% |
| Winchester 748 | <<locked>> | 90% | 52,272 psi | 86% | 3842 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 92% | 51,459 psi | 84% | 3793 fps | 97.5% |
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% | 38,377 psi | 63% | 3442 fps | 99.2% |
| Accurate 2200 | <<locked>> | 80% | 50,169 psi | 82% | 3789 fps | 95.4% |
| Accurate 2230 | <<locked>> | 80% | 50,981 psi | 84% | 3793 fps | 96.1% |
| Accurate 2460 | <<locked>> | 80% | 42,076 psi | 69% | 3550 fps | 98% |
| Accurate 2495 | <<locked>> | 80% | 30,560 psi | 50% | 3258 fps | 97.5% |
| Accurate 2520 | <<locked>> | 80% | 37,434 psi | 61% | 3458 fps | 96.3% |
| Accurate 4064 | <<locked>> | 82% | 31,082 psi | 51% | 3284 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 47,239 psi | 78% | 3593 fps | 99.7% |
| Accurate LT-32 | <<locked>> | 80% | 47,558 psi | 78% | 3612 fps | 98.7% |
| ADI AR 2206H | <<locked>> | 88% | 46,499 psi | 76% | 3688 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 51,271 psi | 84% | 3711 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 47,834 psi | 79% | 3684 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 47,123 psi | 77% | 3711 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 40,161 psi | 66% | 3504 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 80% | 35,839 psi | 59% | 3471 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,134 psi | 71% | 3691 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 49,429 psi | 81% | 3852 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 40,756 psi | 67% | 3556 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,801 psi | 72% | 3606 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 47,485 psi | 78% | 3724 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 96% | 44,498 psi | 73% | 3720 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,731 psi | 77% | 3563 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 49,748 psi | 82% | 3757 fps | 95.3% |
| Bofors RP3 | <<locked>> | 90% | 40,393 psi | 66% | 3553 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,624 psi | 65% | 3451 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 82% | 38,435 psi | 63% | 3501 fps | 95.3% |
| Hodgdon CFE223 | <<locked>> | 86% | 49,197 psi | 81% | 3835 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 42,786 psi | 70% | 3612 fps | 99% |
| Hodgdon H335 | <<locked>> | 80% | 43,888 psi | 72% | 3622 fps | 98.6% |
| Hodgdon H4895 | 68.8 gr | 86% | 43,830 psi | 72% | 3635 fps | 95.5% |
| Hodgdon LEVERevolution | 73.5 gr | 88% | 42,351 psi | 70% | 3638 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,801 psi | 41% | 2251 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 42,409 psi | 70% | 3576 fps | 95% |
| IMR 3031 | <<locked>> | 80% | 34,084 psi | 56% | 3432 fps | 97.7% |
| IMR 4064 | <<locked>> | 92% | 46,992 psi | 77% | 3665 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 44,614 psi | 73% | 3593 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 45,455 psi | 75% | 3698 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 82% | 40,161 psi | 66% | 3504 fps | 95.1% |
| Lovex D073.5 | <<locked>> | 80% | 42,061 psi | 69% | 3547 fps | 96.9% |
| Lovex D073.6 | <<locked>> | 82% | 36,100 psi | 59% | 3428 fps | 95.7% |
| Lovex S060 | <<locked>> | 86% | 44,208 psi | 73% | 3556 fps | 95% |
| Lovex S062 | <<locked>> | 88% | 40,611 psi | 67% | 3524 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 49,429 psi | 81% | 3701 fps | 100% |
| Norma 201 | <<locked>> | 84% | 39,494 psi | 65% | 3484 fps | 95% |
| Norma 202 | <<locked>> | 80% | 34,722 psi | 57% | 3376 fps | 96% |
| Norma 203B | 73.6 gr | 92% | 46,673 psi | 77% | 3707 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 92% | 47,166 psi | 77% | 3724 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 86% | 45,455 psi | 75% | 3655 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 84% | 47,181 psi | 77% | 3638 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,816 psi | 41% | 2297 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,264 psi | 69% | 3566 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 50,241 psi | 82% | 3868 fps | 96% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 38,435 psi | 63% | 3573 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 37,884 psi | 62% | 3442 fps | 96.7% |
| Rottweil R 902 | <<locked>> | 86% | 39,929 psi | 66% | 3488 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 94% | 43,265 psi | 71% | 3619 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 36,100 psi | 59% | 3428 fps | 95.7% |
| Shooters World Precision | <<locked>> | 88% | 40,611 psi | 67% | 3524 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,121 psi | 74% | 3586 fps | 96.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 50,850 psi | 83% | 3419 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,718 psi | 78% | 3711 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 45,455 psi | 75% | 3691 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,425 psi | 73% | 3625 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 45,179 psi | 74% | 3638 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,303 psi | 60% | 3340 fps | 96.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,559 psi | 49% | 3136 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 40,524 psi | 67% | 3527 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 35,853 psi | 59% | 3340 fps | 97.4% |
| Somchem S341 | <<locked>> | 88% | 47,340 psi | 78% | 3665 fps | 95.8% |
| Somchem S355 | <<locked>> | 94% | 44,382 psi | 73% | 3632 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 51,169 psi | 84% | 3648 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,365 psi | 68% | 3484 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 80% | 36,361 psi | 60% | 3360 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 80% | 31,328 psi | 51% | 3284 fps | 97.7% |
| Vihtavuori N140 | <<locked>> | 80% | 32,721 psi | 54% | 3287 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 92% | 39,798 psi | 65% | 3481 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 82% | 40,089 psi | 66% | 3497 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 82% | 33,852 psi | 56% | 3323 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 45,165 psi | 74% | 3583 fps | 96% |
| Winchester 748 | <<locked>> | 82% | 39,117 psi | 64% | 3537 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 44,527 psi | 73% | 3642 fps | 95.9% |
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 100 powders for .300 Blaser Mag. loaded with the .308 | 88gr | Inceptor SRR. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,990 fps; across all powders the maximum-charge window runs from 2,500 fps to 3,990 fps. Accurate 4350 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 88.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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. Hodgdon LEVERevolution, Norma 203B, Hodgdon H4895 rank at the top here: for .300 Blaser Mag. with the .308 | 88gr | Inceptor SRR they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4350, Alliant Reloder-16, Hodgdon Hybrid 100V 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.