Very true, on TV. But not according to world experts in forensics and human physiological/neurological response to a gunshot. There are volumes about this subject. “What you’d expect” is verbage from movie watching supposition, without benefit of study or knowledge.
Of useful note is the time oswald had to set up the shot, the rising elevation of the vehicle (prez. head) and falling away in distance-— combined to provide a virtually “steady” position of the target for a sufficient period of time. A tragedy.
World experts, or my lying eyes? Decisions...decisions...