There was an article on this "Drag" in the American Rifleman many years ago as it related to the Hi-Velocity .22 LR vs the old Standard round. Seems when the new Hi-Vel loads came on the market outdoor target shooters who shot the LR round at comparatively long ranges flocked to them as a means of reducing Wind Drift. Turned out that even though the new round had a shorter Time Of Flight, they actually gave greater wind drift. Seems Wind Drift is based not on actual time of flight, but on lag time, IE difference in actual TOF from a theoretical TOF in a vacuum. The HV round proved to have greater lag time, thus more Wind Drift due to its greater Drag Factor in crossing the Sound Barrier. This phenomenon occurs only with those rounds straddling the SOS. When both rounds start either below or above this velocity increasing MV will reduce Wind drift.
