Load Specifications
Load data in caliber .300 AAC Blackout with .308 | 110gr | Barnes TTSX FB bullet and 6 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 ReloadSwiss RS 14.
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 |
|---|---|---|---|---|---|---|
| Hodgdon LilGun | <<locked>> | 98% | 43,598 psi | 86% | 2270 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 22,379 psi | 44% | 1283 fps | 100% |
| Lovex S040 | <<locked>> | 94% | 43,758 psi | 86% | 2116 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 21,147 psi | 42% | 1306 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 27,325 psi | 54% | 1857 fps | 97.2% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 34,026 psi | 67% | 2031 fps | 97.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Hodgdon LilGun | 15.2 gr | 82% | 25,280 psi | 50% | 1932 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 15,983 psi | 31% | 1142 fps | 100% |
| Lovex S040 | 13 gr | 82% | 30,603 psi | 60% | 1896 fps | 95.5% |
| ReloadSwiss RS 14 | 4.9 gr | 80% | 15,273 psi | 30% | 1165 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 23,366 psi | 46% | 1759 fps | 95.4% |
| Vihtavuori N110 | <<locked>> | 92% | 26,963 psi | 53% | 1890 fps | 95.2% |
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 6 powders for .300 AAC Blackout loaded with the .308 | 110gr | Barnes TTSX FB. Hodgdon LilGun delivers the highest muzzle velocity at 2,270 fps; across all powders the maximum-charge window runs from 1,283 fps to 2,270 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 6 of the 6 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (350 MPa), the top charges use 42–86 %, leaving at least 14 % headroom. The 110.0 gr projectile in 0.308" calls for a 1:13.5 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, ReloadSwiss RS 14 rank at the top here: for .300 AAC Blackout with the .308 | 110gr | Barnes TTSX FB 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.