Load Specifications
Load data in caliber .300 AAC Blackout with .311 | 125gr | Speer Spitzer Soft Point 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, Vihtavuori N110 and Lovex S040.
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% | 44,396 psi | 87% | 1962 fps | 96.5% |
| Hodgdon LilGun | <<locked>> | 94% | 44,599 psi | 88% | 2126 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 23,946 psi | 47% | 1204 fps | 100% |
| Lovex S040 | <<locked>> | 90% | 44,121 psi | 87% | 1978 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 23,467 psi | 46% | 1240 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 31,415 psi | 62% | 1804 fps | 99.4% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 39,668 psi | 78% | 1975 fps | 99.6% |
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% | 39,900 psi | 79% | 1900 fps | 95.4% |
| Hodgdon LilGun | 14.7 gr | 80% | 27,920 psi | 55% | 1860 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 17,767 psi | 35% | 1083 fps | 100% |
| Lovex S040 | 12.6 gr | 80% | 32,793 psi | 65% | 1804 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 16,665 psi | 33% | 1096 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 19,928 psi | 39% | 1545 fps | 95.1% |
| Vihtavuori N110 | 12.4 gr | 82% | 23,728 psi | 47% | 1683 fps | 95.3% |
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 .311 | 125gr | Speer Spitzer Soft Point. Hodgdon LilGun delivers the highest muzzle velocity at 2,126 fps; across all powders the maximum-charge window runs from 1,204 fps to 2,126 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 46–88 %, leaving at least 12 % 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, Vihtavuori N110, Lovex S040 rank at the top here: for .300 AAC Blackout with the .311 | 125gr | Speer Spitzer Soft 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.