5.56 AAC 55 grain FMJ Bullet Speed Tests

Testing AAC 55 grain FMJ velocities out of three different barrel lengths, 16", 11.5", and 8.5" AR-15's. Temperature is 70 degrees. Altitude 1,700 feet above sea level.

[@dentaldepartment3681]

First like

[@hunterholzer]

First high five too 👋