Load Specifications
Load data in caliber .300 AAC Blackout with .308 | 150gr | Peregrine Bushmaster (VRG-3) bullet and 9 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon LilGun, 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>> | 96% | 45,716 psi | 90% | 1834 fps | 96.4% |
| ADI AR 2205 | <<locked>> | 96% | 43,976 psi | 87% | 1752 fps | 97.8% |
| Hodgdon LilGun | <<locked>> | 92% | 44,585 psi | 88% | 1896 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 24,221 psi | 48% | 1070 fps | 100% |
| Lovex S040 | <<locked>> | 90% | 45,542 psi | 90% | 1781 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 34,664 psi | 68% | 1709 fps | 95.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 23,177 psi | 46% | 1093 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 32,648 psi | 64% | 1631 fps | 100% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 41,959 psi | 83% | 1791 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>> | 92% | 40,596 psi | 80% | 1772 fps | 95.2% |
| ADI AR 2205 | 13.4 gr | 88% | 34,055 psi | 67% | 1621 fps | 95.4% |
| Hodgdon LilGun | 13.3 gr | 80% | 28,631 psi | 56% | 1677 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 17,289 psi | 34% | 948 fps | 100% |
| Lovex S040 | <<locked>> | 80% | 33,330 psi | 66% | 1621 fps | 99% |
| Lovex S053 | <<locked>> | 98% | 32,663 psi | 64% | 1680 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 16,679 psi | 33% | 971 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 18,956 psi | 37% | 1365 fps | 96.4% |
| Vihtavuori N110 | 11 gr | 80% | 22,945 psi | 45% | 1493 fps | 96.8% |
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 | Peregrine Bushmaster (VRG-3). Hodgdon LilGun delivers the highest muzzle velocity at 1,896 fps; across all powders the maximum-charge window runs from 1,070 fps to 1,896 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 46–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:15.0 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. Hodgdon LilGun, Vihtavuori N110, ADI AR 2205 rank at the top here: for .300 AAC Blackout with the .308 | 150gr | Peregrine Bushmaster (VRG-3) 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.