Load Specifications
Load data in caliber .300 AAC Blackout with .308 | 110gr | Barnes TAC-X bullet and 7 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon LilGun, Lovex S040 and Vihtavuori N110.
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>> | 98% | 45,411 psi | 89% | 2192 fps | 96.6% |
| Hodgdon LilGun | <<locked>> | 92% | 43,018 psi | 85% | 2333 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 23,946 psi | 47% | 1358 fps | 100% |
| Lovex S040 | <<locked>> | 90% | 44,208 psi | 87% | 2201 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 22,713 psi | 45% | 1381 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 31,691 psi | 62% | 2011 fps | 99.4% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 40,828 psi | 80% | 2211 fps | 99.6% |
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 | <<locked>> | 94% | 40,741 psi | 80% | 2123 fps | 95.5% |
| Hodgdon LilGun | 17.2 gr | 80% | 27,934 psi | 55% | 2060 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 17,172 psi | 34% | 1211 fps | 100% |
| Lovex S040 | 14.8 gr | 80% | 33,025 psi | 65% | 2014 fps | 97.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 16,418 psi | 32% | 1234 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 20,769 psi | 41% | 1749 fps | 95.4% |
| Vihtavuori N110 | 14.6 gr | 82% | 23,859 psi | 47% | 1873 fps | 95.1% |
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 7 powders for .300 AAC Blackout loaded with the .308 | 110gr | Barnes TAC-X. Hodgdon LilGun delivers the highest muzzle velocity at 2,333 fps; across all powders the maximum-charge window runs from 1,358 fps to 2,333 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 45–89 %, leaving at least 11 % headroom. The 110.0 gr projectile in 0.308" calls for a 1:15.5 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. Hodgdon LilGun, Lovex S040, Vihtavuori N110 rank at the top here: for .300 AAC Blackout with the .308 | 110gr | Barnes TAC-X 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.