15 published .300 Whisper / .300 AAC Blackout / .300 Blackout Subsonic Loads (Handloader isse #353) reloading recipes across 9 powders and 3 bullet manufacturers, with bullet weights from 190 to 230 grains and recorded velocities between 1,014 and 1,071 fps. Every load lists charge weight, velocity, COAL, primer and case where the source published it.
The first 5 of 15 recipes.
| Bullet | Powder | Charge | Velocity | COAL | Primer |
|---|---|---|---|---|---|
| Hornady SUB-X 190gr | Hodgdon CFE BLK | 12.0 gr | 1056 fps | 2.050 | Federal GM205M Small Rifle |
| Hornady SUB-X 190gr | Hodgdon H-322 | 13.2 gr | 1027 fps | 2.050 | Federal GM205M Small Rifle |
| Hornady SUB-X 190gr | Hodgdon H-4198 | 10.8 gr | 1033 fps | 2.050 | Federal GM205M Small Rifle |
| Hornady SUB-X 190gr | IMR IMR-4227 | 9.6 gr | 1062 fps | 2.050 | Federal GM205M Small Rifle |
| Hornady SUB-X 190gr | Hodgdon Lil'Gun | 8.2 gr | 1061 fps | 2.050 | Federal GM205M Small Rifle |
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