Load Specifications
Load data in caliber .300 AAC Blackout with .308 | 110gr | Sierra FMJ RN SportsMaster bullet and 7 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon LilGun, Lovex S040 and Vihtavuori N110.
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 |
|---|---|---|---|---|---|---|
| ADI AR 2205 | <<locked>> | 98% | 45,614 psi | 90% | 2169 fps | 96.3% |
| Hodgdon LilGun | <<locked>> | 92% | 42,453 psi | 84% | 2300 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 23,989 psi | 47% | 1339 fps | 100% |
| Lovex S040 | <<locked>> | 90% | 44,483 psi | 88% | 2182 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 23,409 psi | 46% | 1375 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 31,647 psi | 62% | 1985 fps | 99.2% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 40,103 psi | 79% | 2175 fps | 99.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| ADI AR 2205 | <<locked>> | 94% | 40,321 psi | 79% | 2090 fps | 95% |
| Hodgdon LilGun | 16.6 gr | 80% | 28,094 psi | 55% | 2037 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 17,564 psi | 35% | 1198 fps | 100% |
| Lovex S040 | 14.3 gr | 80% | 33,141 psi | 65% | 1991 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 16,926 psi | 33% | 1220 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 21,060 psi | 41% | 1729 fps | 95.1% |
| Vihtavuori N110 | 14.4 gr | 84% | 25,454 psi | 50% | 1890 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 7 powders for .300 AAC Blackout loaded with the .308 | 110gr | Sierra FMJ RN SportsMaster. Hodgdon LilGun delivers the highest muzzle velocity at 2,300 fps; across all powders the maximum-charge window runs from 1,339 fps to 2,300 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 7 of the 7 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. Hodgdon TrailBoss, ReloadSwiss RS 14, SNPE Vectan BA6 1/2 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, Lovex S040, Vihtavuori N110 rank at the top here: for .300 AAC Blackout with the .308 | 110gr | Sierra FMJ RN SportsMaster they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.