Load Specifications
Load data in caliber .300 AAC Blackout with .308 | 180gr | Remington Bronze Point bullet and 19 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, Lovex S053 and IMR 4227.
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 |
|---|---|---|---|---|---|---|
| Accurate 5744 | <<locked>> | 82% | 43,482 psi | 86% | 1693 fps | 96% |
| Accurate No. 11 FS | <<locked>> | 86% | 43,961 psi | 87% | 1696 fps | 98.9% |
| ADI AR 2205 | <<locked>> | 88% | 43,700 psi | 86% | 1637 fps | 99.8% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 36,999 psi | 73% | 1690 fps | 97.6% |
| Hodgdon LilGun | <<locked>> | 82% | 44,338 psi | 87% | 1732 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 27,572 psi | 54% | 1024 fps | 100% |
| IMR 4227 | <<locked>> | 96% | 43,743 psi | 86% | 1693 fps | 97.7% |
| Lovex D060 | <<locked>> | 88% | 43,482 psi | 86% | 1693 fps | 96% |
| Lovex D063 | <<locked>> | 86% | 45,556 psi | 90% | 1716 fps | 96.5% |
| Lovex S040 | <<locked>> | 82% | 45,455 psi | 90% | 1644 fps | 100% |
| Lovex S053 | <<locked>> | 98% | 43,685 psi | 86% | 1703 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 26,760 psi | 53% | 1043 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 98% | 44,773 psi | 88% | 1742 fps | 97.8% |
| Shooters World Blackout | <<locked>> | 86% | 45,556 psi | 90% | 1716 fps | 96.5% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 43,482 psi | 86% | 1693 fps | 96% |
| Shooters World SOCOM | <<locked>> | 88% | 42,960 psi | 85% | 1677 fps | 96.5% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 42,975 psi | 85% | 1614 fps | 100% |
| Vihtavuori N110 | <<locked>> | 92% | 44,150 psi | 87% | 1667 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 37,536 psi | 74% | 1673 fps | 98.7% |
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 5744 | <<locked>> | 80% | 40,669 psi | 80% | 1654 fps | 95.2% |
| Accurate No. 11 FS | <<locked>> | 80% | 36,260 psi | 71% | 1598 fps | 97.5% |
| ADI AR 2205 | <<locked>> | 80% | 34,287 psi | 68% | 1516 fps | 98.6% |
| ADI AR 2207 | <<locked>> | 92% | 29,544 psi | 58% | 1572 fps | 95.2% |
| Hodgdon LilGun | <<locked>> | 80% | 41,234 psi | 81% | 1699 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,102 psi | 40% | 912 fps | 100% |
| IMR 4227 | 14.3 gr | 88% | 34,693 psi | 68% | 1575 fps | 95.4% |
| Lovex D060 | <<locked>> | 86% | 41,321 psi | 81% | 1663 fps | 95.4% |
| Lovex D063 | <<locked>> | 82% | 39,668 psi | 78% | 1640 fps | 95% |
| Lovex S040 | <<locked>> | 80% | 42,960 psi | 85% | 1617 fps | 100% |
| Lovex S053 | 12.8 gr | 80% | 26,658 psi | 53% | 1457 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,638 psi | 39% | 932 fps | 100% |
| ReloadSwiss RS 36 | 15.6 gr | 90% | 35,085 psi | 69% | 1617 fps | 95.4% |
| Shooters World Blackout | <<locked>> | 82% | 39,668 psi | 78% | 1640 fps | 95% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 41,321 psi | 81% | 1663 fps | 95.4% |
| Shooters World SOCOM | <<locked>> | 84% | 38,000 psi | 75% | 1614 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 25,541 psi | 50% | 1388 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 31,444 psi | 62% | 1512 fps | 100% |
| Vihtavuori N120 | <<locked>> | 88% | 26,643 psi | 52% | 1496 fps | 95.2% |
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 19 powders for .300 AAC Blackout loaded with the .308 | 180gr | Remington Bronze Point. ReloadSwiss RS 36 delivers the highest muzzle velocity at 1,742 fps; across all powders the maximum-charge window runs from 1,024 fps to 1,742 fps. ADI AR 2207 gives the best case fill at 100 %, and 19 of the 19 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (350 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. ADI AR 2207, Hodgdon TrailBoss, 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. ReloadSwiss RS 36, Lovex S053, IMR 4227 rank at the top here: for .300 AAC Blackout with the .308 | 180gr | Remington Bronze Point 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.