Load Specifications
Load data in caliber .300 AAC Blackout with .308 | 150gr | Speer Gold Dot bullet and 18 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate No. 11 FS, Vihtavuori N110 and Lovex S053.
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% | 43,714 psi | 86% | 1831 fps | 96.5% |
| Accurate No. 11 FS | <<locked>> | 92% | 43,714 psi | 86% | 1831 fps | 96.5% |
| ADI AR 2205 | <<locked>> | 94% | 43,714 psi | 86% | 1768 fps | 98.2% |
| ADI AR 2205 | <<locked>> | 94% | 43,714 psi | 86% | 1768 fps | 98.2% |
| Hodgdon LilGun | <<locked>> | 90% | 45,107 psi | 89% | 1913 fps | 100% |
| Hodgdon LilGun | <<locked>> | 90% | 45,107 psi | 89% | 1913 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 25,483 psi | 50% | 1093 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 25,483 psi | 50% | 1093 fps | 100% |
| Lovex S040 | <<locked>> | 88% | 45,934 psi | 90% | 1801 fps | 100% |
| Lovex S040 | <<locked>> | 88% | 45,934 psi | 90% | 1801 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 37,840 psi | 75% | 1772 fps | 97.1% |
| Lovex S053ᴾ | <<locked>> | 100% | 37,840 psi | 75% | 1772 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 24,540 psi | 48% | 1115 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 24,540 psi | 48% | 1115 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 35,375 psi | 70% | 1680 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 35,375 psi | 70% | 1680 fps | 100% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 45,194 psi | 89% | 1841 fps | 100% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 45,194 psi | 89% | 1841 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 | 15.4 gr | 88% | 38,479 psi | 76% | 1762 fps | 95.1% |
| Accurate No. 11 FS | 15.4 gr | 88% | 38,479 psi | 76% | 1762 fps | 95.1% |
| ADI AR 2205 | <<locked>> | 84% | 32,677 psi | 64% | 1614 fps | 95.5% |
| ADI AR 2205 | <<locked>> | 84% | 32,677 psi | 64% | 1614 fps | 95.5% |
| Hodgdon LilGun | <<locked>> | 80% | 32,387 psi | 64% | 1749 fps | 99.8% |
| Hodgdon LilGun | <<locked>> | 80% | 32,387 psi | 64% | 1749 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 18,724 psi | 37% | 978 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 18,724 psi | 37% | 978 fps | 100% |
| Lovex S040 | <<locked>> | 80% | 36,448 psi | 72% | 1683 fps | 99.6% |
| Lovex S040 | <<locked>> | 80% | 36,448 psi | 72% | 1683 fps | 99.6% |
| Lovex S053 | 14.3 gr | 94% | 32,140 psi | 63% | 1683 fps | 95.4% |
| Lovex S053 | 14.3 gr | 94% | 32,140 psi | 63% | 1683 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 17,637 psi | 35% | 991 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 17,637 psi | 35% | 991 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 20,958 psi | 41% | 1421 fps | 97.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 20,958 psi | 41% | 1421 fps | 97.9% |
| Vihtavuori N110 | 11.6 gr | 80% | 25,440 psi | 50% | 1549 fps | 98.1% |
| Vihtavuori N110 | 11.6 gr | 80% | 25,440 psi | 50% | 1549 fps | 98.1% |
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 18 powders for .300 AAC Blackout loaded with the .308 | 150gr | Speer Gold Dot. Hodgdon LilGun delivers the highest muzzle velocity at 1,913 fps; across all powders the maximum-charge window runs from 1,093 fps to 1,913 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 18 of the 18 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (350 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, Hodgdon TrailBoss, 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. Accurate No. 11 FS, Vihtavuori N110, Lovex S053 rank at the top here: for .300 AAC Blackout with the .308 | 150gr | Speer Gold Dot they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss, 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.