Oh, just direct evidence of more than three bullets, and the House Committee on Assassinations saying it was a conspiracy and Kennedy was hit almost simultaneously by two shots, and the declarations of Johnson's personal attorney McClellan saying Johnson was in on it.
But just go ahead and be a sheep and buy the silly notion of a pristine magic bullet going through two men, wrist bones, and all. After all, men like Lyndon Johnson would never be so low and ruthless to facilitate an assassination would they.