Load Specifications
Load data in caliber .300 AAC Blackout with .308 | 180gr | Peregrine VRG-3 bullet and 19 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 5744 | <<locked>> | 90% | 45,818 psi | 90% | 1699 fps | 96% |
| Accurate No. 11 FS | <<locked>> | 88% | 42,960 psi | 85% | 1663 fps | 98.5% |
| ADI AR 2205 | <<locked>> | 90% | 43,642 psi | 86% | 1614 fps | 99.6% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 34,011 psi | 67% | 1631 fps | 96.3% |
| Hodgdon LilGun | <<locked>> | 84% | 42,482 psi | 84% | 1703 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 26,774 psi | 53% | 1004 fps | 100% |
| IMR 4227 | <<locked>> | 98% | 42,844 psi | 84% | 1663 fps | 97.1% |
| Lovex D060 | <<locked>> | 92% | 45,818 psi | 90% | 1699 fps | 96% |
| Lovex D063 | <<locked>> | 92% | 45,745 psi | 90% | 1686 fps | 96.6% |
| Lovex S040 | <<locked>> | 84% | 45,484 psi | 90% | 1627 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 42,482 psi | 84% | 1673 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 25,817 psi | 51% | 1024 fps | 100% |
| ReloadSwiss RS 36ᴾ | <<locked>> | 100% | 43,323 psi | 85% | 1706 fps | 97% |
| Shooters World Blackout | <<locked>> | 88% | 44,976 psi | 89% | 1686 fps | 95.8% |
| Shooters World Buffalo Rifle | <<locked>> | 92% | 45,818 psi | 90% | 1699 fps | 96% |
| Shooters World SOCOM | <<locked>> | 92% | 45,745 psi | 90% | 1686 fps | 96.6% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 39,972 psi | 79% | 1568 fps | 100% |
| Vihtavuori N110 | <<locked>> | 94% | 43,613 psi | 86% | 1654 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 31,879 psi | 63% | 1572 fps | 96.8% |
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>> | 88% | 43,323 psi | 85% | 1670 fps | 95.4% |
| Accurate No. 11 FS | 13.9 gr | 80% | 33,605 psi | 66% | 1545 fps | 96.3% |
| ADI AR 2205 | <<locked>> | 80% | 32,271 psi | 64% | 1470 fps | 97.8% |
| ADI AR 2207 | <<locked>> | 98% | 32,184 psi | 63% | 1601 fps | 95.6% |
| Hodgdon LilGun | <<locked>> | 80% | 36,941 psi | 73% | 1640 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 18,956 psi | 37% | 886 fps | 100% |
| IMR 4227 | <<locked>> | 92% | 36,056 psi | 71% | 1575 fps | 95.3% |
| Lovex D060 | <<locked>> | 90% | 43,323 psi | 85% | 1670 fps | 95.4% |
| Lovex D063 | <<locked>> | 88% | 40,176 psi | 79% | 1621 fps | 95.2% |
| Lovex S040 | <<locked>> | 80% | 40,393 psi | 80% | 1575 fps | 100% |
| Lovex S053 | 12.3 gr | 82% | 25,353 psi | 50% | 1421 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 18,405 psi | 36% | 909 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 94% | 35,882 psi | 71% | 1611 fps | 95.1% |
| Shooters World Blackout | <<locked>> | 86% | 42,482 psi | 84% | 1657 fps | 95.2% |
| Shooters World Buffalo Rifle | <<locked>> | 90% | 43,323 psi | 85% | 1670 fps | 95.4% |
| Shooters World SOCOM | <<locked>> | 88% | 40,176 psi | 79% | 1621 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 23,105 psi | 46% | 1335 fps | 99.8% |
| Vihtavuori N110 | 11.4 gr | 80% | 28,877 psi | 57% | 1467 fps | 99.9% |
| Vihtavuori N120 | <<locked>> | 96% | 28,529 psi | 56% | 1516 fps | 95.5% |
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 21 powders for .300 AAC Blackout loaded with the .308 | 180gr | Peregrine VRG-3. ReloadSwiss RS 36 delivers the highest muzzle velocity at 1,706 fps; across all powders the maximum-charge window runs from 1,004 fps to 1,706 fps. Accurate 1680 gives the best case fill at 100 %, and 21 of the 21 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (350 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 1680, ADI AR 2207, Alliant Reloder-7 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 | 180gr | Peregrine VRG-3 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 1680, Alliant Reloder-7 burn incompletely and react more sensitively to barrel length and temperature. 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.