In the summer of 1967 CBS News conducted a five-part series challenging many of the assertions made in the Warren Report. For this HP White recreated the shooter’s scenario; constructing a 60-foot tower and a track for a moving target at a constant 11 mph. Eleven shooters of varying experience were tasked with firing three shots at the moving target in approximately 5 seconds. See the below video excerpt for the results.
CBS News: Kennedy Assassination Recreation