This one incident pushed me into learning about ballistics, physics, fluid dynamics, and put me onto collecting various firarms over the 40 years or so I have studied this.
After all the wild accusations, the theories of altered photos, altered bodies, altered autopsies, suspicious characters, conflicting testimony, etc, etc, it all comes down to Oswald.
3 shots, 2 hits, all with a capable rifle with a capable shooter.
One of the most interesting recreations done I believe was A&E, maybe Discovery, that recreated the shots down to the ammunition used. This is TV, of course, and maybe they were fibbing, but they even got the bullet to land in Connally’s lap just like the real bullet did. The key fact people failed to consider when discussing the “magic bullet theory” was that the rear seats of the limo were something like 6 inches higher than the front seats. Factor that in and it all made sense. I have an original copy of the Warren Commission report. They did a good job collecting information and trying to separate fact from fiction. Their descriptions were precise and accurate enough to recreate the entire scene, and it all falls down to one nutty guy looking to make a name for himself that had the unusual opportunity to shoot a President riding slowly in an uncovered limo in front of a multi story build he worked at.
If anything, from a professional sniper’s point of view, Oswald did a lousy job. A pro would have easily made a head shot under those circumstances on the first shot. Oswald took three shots and missed badly with the first two.