Bingo. I never bought his head exploding and jerking backwards was an “exit wound”. The brain spatter and skull fragments would have blown onto the hood, not the trunk. And that’s what Jackie was doing on the trunk, retrieving skull or some such, because she was trying to keep him in one piece.
And the things that happened afterwards, the broken evidence chains, autopsy, rushing the body back to DC...
but the main thing it comes down to for me is that Zapruder film and the physics etc.
Come on.
Go ahead and work out the "physics" of a head shot. Be complete and show all work, please.