Previously, we talked about the fleet yaw problem, and the challenges it presents to infantry rifle ammunition developers, and how those challenges have been met with improved projectile designs. However, what we haven’t seen is real-time video of fleet yaw in action. For that, we turn to Larry Vickers, and a recent video he published on the AK-74 rifle:
The whole video is well worth watching, but for those looking specifically to catch fleet yaw as it happens, go to the timestamps 0:26 and 1:06. Very evident is the bullet, which is fully stabilized by the in-spec Bulgarian barrel, yawing violently due to the turbulent forces acting upon it at the muzzle. This behavior continues for about the first 50m of the bullet’s travel, after which point the projectile settles down.
This is not to ignore, of course, the rest of the video, which contains some great high speed footage of the AK-74’s very violent operating cycle.