Load Specifications
Load data in caliber .300 AAC Blackout with .308 | 115gr | Berger Target FB 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 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| ADI AR 2205 | <<locked>> | 96% | 45,107 psi | 89% | 2139 fps | 97.1% |
| Hodgdon LilGun | <<locked>> | 90% | 43,656 psi | 86% | 2280 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 25,063 psi | 49% | 1335 fps | 100% |
| Lovex S040 | <<locked>> | 88% | 44,556 psi | 88% | 2152 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 23,946 psi | 47% | 1358 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 34,026 psi | 67% | 1998 fps | 99.8% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 43,918 psi | 87% | 2205 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 | 17.8 gr | 90% | 38,305 psi | 75% | 2034 fps | 95.4% |
| Hodgdon LilGun | 17.2 gr | 80% | 30,705 psi | 60% | 2060 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 18,159 psi | 36% | 1188 fps | 100% |
| Lovex S040 | 14.8 gr | 80% | 35,172 psi | 69% | 2001 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 17,506 psi | 34% | 1214 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 20,189 psi | 40% | 1680 fps | 95.6% |
| Vihtavuori N110 | <<locked>> | 80% | 24,758 psi | 49% | 1847 fps | 96.2% |
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 12 powders for .300 AAC Blackout loaded with the .308 | 115gr | Berger Target FB. Hodgdon LilGun delivers the highest muzzle velocity at 2,280 fps; across all powders the maximum-charge window runs from 1,335 fps to 2,280 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 12 of the 12 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 115.0 gr projectile in 0.308" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, IMR 4227, Lovex S053 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, ADI AR 2205 rank at the top here: for .300 AAC Blackout with the .308 | 115gr | Berger Target FB they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 4227, Lovex D063, Lovex S053 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.