The so called magic bullet theory happened not with the it hit JFK in the back, went out his neck and moved 3 feet over to the right hit Connelly, when through his wrist and into his leg. The real reason it was pristine was that it only went through soft tissue, up to the point that it grased Connallys wrist (wich accounts for the dent in the tip and hit his thigh. The angle of the shot is not taking into consideration that Connally was in a jump seat, not the front seat! The Jump seat was considerable lower and to the left of JFK, verses the theory he was in the front seat and to the right of JFK as can be seen in the two frames. Notice Connally is in the middle and lower and how far away from the door he is sitting. When Kennedy grabs his throat, Connally was hit as he turns. In blowups of the photo, you can see Connallys suit coat lapel flair up as the bullet goes through him. Posner used the actual Limo and the forensic evidence of the shirts to prove that the shot lined up to one shot.
As to all the rest of the stuff of burglerys and hit teams, there is not one person that can prove it. Its all hearsay and no actual proof. Look I would like to believe the CIA or LBJ pulled it off, but so far its just not there, and Posner has been the only one so far that has gone beyond the Zapruder film to actually look at the physical evidence of the shirts, the car, the film and geometric data to show that the shot was possible! I've seen re-enactments that prove that the shot is not only possible, but the bullet tumbled through the air and remained pristine.
Most of what you say is fairly accurate, but there was no "pristine" bullet, the bullet was crushed, consistent with the wounds it inflicted.
There is so much BS in this case it's unbelievable. Do some freakin' reading people!!!