Load Specifications
Load data in caliber .300 AAC Blackout with .311 | 190gr | Winchester Silvertip bullet and 20 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, Alliant Reloder-7 and ADI AR 2207.
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 1680 | <<locked>> | 98% | 45,223 psi | 89% | 1663 fps | 95.7% |
| Accurate 5744 | <<locked>> | 82% | 45,121 psi | 89% | 1663 fps | 97% |
| Accurate No. 11 FS | <<locked>> | 84% | 42,830 psi | 84% | 1634 fps | 99.2% |
| ADI AR 2205 | <<locked>> | 88% | 45,426 psi | 89% | 1604 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 38,986 psi | 77% | 1667 fps | 98.6% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 42,119 psi | 83% | 1667 fps | 96% |
| Hodgdon LilGun | <<locked>> | 82% | 45,774 psi | 90% | 1690 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 27,644 psi | 54% | 991 fps | 100% |
| IMR 4227 | <<locked>> | 96% | 45,643 psi | 90% | 1667 fps | 98.5% |
| Lovex D060 | <<locked>> | 88% | 45,121 psi | 89% | 1663 fps | 97% |
| Lovex D063 | <<locked>> | 84% | 44,280 psi | 87% | 1650 fps | 96.9% |
| Lovex S053 | <<locked>> | 98% | 45,672 psi | 90% | 1673 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,528 psi | 54% | 1020 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 43,859 psi | 86% | 1683 fps | 98.2% |
| Shooters World Blackout | <<locked>> | 84% | 44,280 psi | 87% | 1650 fps | 96.9% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 45,121 psi | 89% | 1663 fps | 97% |
| Shooters World SOCOM | <<locked>> | 88% | 44,831 psi | 88% | 1650 fps | 97.5% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 44,730 psi | 88% | 1578 fps | 100% |
| Vihtavuori N110 | <<locked>> | 90% | 43,569 psi | 86% | 1608 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 39,479 psi | 78% | 1650 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 |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 96% | 42,902 psi | 85% | 1637 fps | 95.2% |
| Accurate 5744 | <<locked>> | 80% | 42,076 psi | 83% | 1627 fps | 96.3% |
| Accurate No. 11 FS | <<locked>> | 80% | 37,869 psi | 75% | 1572 fps | 98.4% |
| ADI AR 2205 | <<locked>> | 80% | 35,491 psi | 70% | 1486 fps | 99.2% |
| ADI AR 2207 | 14.5 gr | 88% | 27,398 psi | 54% | 1486 fps | 95% |
| Alliant Reloder-7 | 16.7 gr | 98% | 39,247 psi | 77% | 1631 fps | 95.3% |
| Hodgdon LilGun | <<locked>> | 80% | 43,323 psi | 85% | 1667 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,639 psi | 41% | 889 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 32,387 psi | 64% | 1496 fps | 95.4% |
| Lovex D060 | <<locked>> | 82% | 37,913 psi | 75% | 1572 fps | 95.1% |
| Lovex D063 | <<locked>> | 80% | 38,479 psi | 76% | 1581 fps | 95.5% |
| Lovex S053 | <<locked>> | 80% | 27,789 psi | 55% | 1430 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,638 psi | 39% | 899 fps | 100% |
| ReloadSwiss RS 36 | 14.8 gr | 86% | 32,547 psi | 64% | 1532 fps | 95.2% |
| Shooters World Blackout | <<locked>> | 80% | 38,479 psi | 76% | 1581 fps | 95.5% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 37,913 psi | 75% | 1572 fps | 95.1% |
| Shooters World SOCOM | <<locked>> | 82% | 36,999 psi | 73% | 1555 fps | 95.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 26,542 psi | 52% | 1358 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 32,721 psi | 64% | 1480 fps | 100% |
| Vihtavuori N120 | <<locked>> | 84% | 25,121 psi | 49% | 1424 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 20 powders for .300 AAC Blackout loaded with the .311 | 190gr | Winchester Silvertip. Hodgdon LilGun delivers the highest muzzle velocity at 1,690 fps; across all powders the maximum-charge window runs from 991 fps to 1,690 fps. ADI AR 2207 gives the best case fill at 100 %, and 20 of the 20 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (350 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 190.0 gr projectile in 0.311" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. ADI AR 2207, Alliant Reloder-7, Hodgdon TrailBoss 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, Alliant Reloder-7, ADI AR 2207 rank at the top here: for .300 AAC Blackout with the .311 | 190gr | Winchester Silvertip 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.