Load Specifications
Load data in caliber .300 AAC Blackout with .308 | 150gr | Remington SP Core-Lokt bullet and 9 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Lovex S053, 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 |
|---|---|---|---|---|---|---|
| Accurate No. 11 FS | <<locked>> | 92% | 45,585 psi | 90% | 1880 fps | 97.3% |
| ADI AR 2205 | <<locked>> | 94% | 45,658 psi | 90% | 1818 fps | 98.8% |
| Hodgdon LilGun | <<locked>> | 88% | 45,121 psi | 89% | 1932 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 25,962 psi | 51% | 1115 fps | 100% |
| Lovex S040 | <<locked>> | 86% | 44,469 psi | 88% | 1808 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 39,900 psi | 79% | 1824 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 25,034 psi | 49% | 1138 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 36,927 psi | 73% | 1719 fps | 100% |
| Vihtavuori N110 | <<locked>> | 98% | 44,541 psi | 88% | 1854 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 |
|---|---|---|---|---|---|---|
| Accurate No. 11 FS | <<locked>> | 86% | 37,608 psi | 74% | 1772 fps | 95.4% |
| ADI AR 2205 | 13.5 gr | 80% | 30,110 psi | 59% | 1591 fps | 95% |
| Hodgdon LilGun | <<locked>> | 80% | 34,171 psi | 67% | 1795 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 18,884 psi | 37% | 994 fps | 100% |
| Lovex S040 | <<locked>> | 80% | 37,681 psi | 74% | 1722 fps | 99.9% |
| Lovex S053 | 14.4 gr | 90% | 30,197 psi | 59% | 1670 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 18,333 psi | 36% | 1017 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 21,973 psi | 43% | 1460 fps | 98.6% |
| Vihtavuori N110 | 12.2 gr | 80% | 26,731 psi | 53% | 1591 fps | 98.7% |
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 9 powders for .300 AAC Blackout loaded with the .308 | 150gr | Remington SP Core-Lokt. Hodgdon LilGun delivers the highest muzzle velocity at 1,932 fps; across all powders the maximum-charge window runs from 1,115 fps to 1,932 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 9 of the 9 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (350 MPa), the top charges use 49–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, Lovex S053, ReloadSwiss RS 14 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. Lovex S053, Vihtavuori N110, ADI AR 2205 rank at the top here: for .300 AAC Blackout with the .308 | 150gr | Remington SP Core-Lokt 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.