Load Specifications
Load data in caliber .300 AAC Blackout with .308 | 110gr | Barnes TAC-TX bullet and 6 powders. The key underlying parameters are shown in the table above.
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% | 44,512 psi | 88% | 2293 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 22,524 psi | 44% | 1293 fps | 100% |
| Lovex S040 | <<locked>> | 94% | 44,730 psi | 88% | 2139 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 21,292 psi | 42% | 1316 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 28,021 psi | 55% | 1877 fps | 97.6% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 34,911 psi | 69% | 2054 fps | 98% |
Start Load - Barrel Length: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Hodgdon LilGun | <<locked>> | 82% | 25,454 psi | 50% | 1946 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 16,215 psi | 32% | 1152 fps | 100% |
| Lovex S040 | <<locked>> | 80% | 29,240 psi | 58% | 1873 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 15,461 psi | 30% | 1175 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 22,742 psi | 45% | 1752 fps | 95.2% |
| Vihtavuori N110 | <<locked>> | 90% | 26,194 psi | 52% | 1880 fps | 95% |
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 TAC-TX. Hodgdon LilGun delivers the highest muzzle velocity at 2,293 fps; across all powders the maximum-charge window runs from 1,293 fps to 2,293 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 42–88 %, leaving at least 12 % headroom. The 110.0 gr projectile in 0.308" calls for a 1:11.5 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.