Load Specifications
Load data in caliber .300 AAC Blackout with .308 | 150gr | Brenneke TIG bullet and 7 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N110 and ADI AR 2205.
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: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| ADI AR 2205 | <<locked>> | 96% | 43,468 psi | 86% | 1729 fps | 97.5% |
| Hodgdon LilGun | <<locked>> | 92% | 44,193 psi | 87% | 1877 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 24,816 psi | 49% | 1063 fps | 100% |
| Lovex S040 | <<locked>> | 90% | 45,498 psi | 90% | 1765 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 23,873 psi | 47% | 1086 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 32,866 psi | 65% | 1617 fps | 100% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 42,192 psi | 83% | 1775 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| ADI AR 2205 | 13.2 gr | 88% | 35,012 psi | 69% | 1617 fps | 95.4% |
| Hodgdon LilGun | <<locked>> | 80% | 29,675 psi | 58% | 1680 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 17,753 psi | 35% | 942 fps | 100% |
| Lovex S040 | <<locked>> | 80% | 34,040 psi | 67% | 1617 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 17,245 psi | 34% | 965 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 19,595 psi | 39% | 1362 fps | 96.5% |
| Vihtavuori N110 | 10.8 gr | 80% | 23,757 psi | 47% | 1490 fps | 96.9% |
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 7 powders for .300 AAC Blackout loaded with the .308 | 150gr | Brenneke TIG. Hodgdon LilGun delivers the highest muzzle velocity at 1,877 fps; across all powders the maximum-charge window runs from 1,063 fps to 1,877 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 7 of the 7 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (350 MPa), the top charges use 47–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, SNPE Vectan BA6 1/2 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. Vihtavuori N110, Lovex S053, ADI AR 2205 rank at the top here: for .300 AAC Blackout with the .308 | 150gr | Brenneke TIG they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.