SLO,
Sorry to burst your bubble bud, but bullets DO sometimes tumble during flight. All it has to do is touch something...anything...no matter how insubstantial.
The 6.5 mm bullet that hit Kennedy was a solid metal projectile...not a hollow point. It was fired at a relatively low velocity for a rifle round...approximately 2300 feet per second. After passing through Kennedy and Connelly it could well have imbedded itself in another soft object without being deformed.
The 6.5 mm caliber was adopted by several countries in Europe and Asia as their main battle cartridge because of its low recoil and superb accuracy. The Italian Carcano used by Oswald, while hardly of the quality of a Mannlicher carbine, was certainly of sufficient accuracy to do the job.
Also, more than one marksman has duplicated Oswald's feat with the same type of rifle, from the same range, and at a similar elevation and angle. The Zapruda film shows Kennedy and Connelly reacting simultaneously to a bullet strike. Three dimensional recreations of the event, using computer graphics, have shown that the the two men were, without a doubt, struck by a single bullet. It passed through Kennedy's upper back, out through the lower part of his throat, through the seat in front of him, into Connelly's back, and left and inch and a half exit wound just below his right nipple.
The computer recreation featured on the History Channel, which was programmed by modern day police investigators, using modern investigative techniques applied to the Zapruder film and the autopsy reports, determined that the bullet that struck Kennedy and Connelly was indeed fired from the window of the Texas School Book Depository building.
Three shell casings were found underneath the window. The rifle was found hidden in another part of the building. Oswald was the only employee not in the building when the police searched it. He is the only employee known to have committed a crime that day...the murder of Police Office Paul Tibbets.
No other evidence has EVER come to light concerning the presence of another shooter.
I will admit to the POSSIBILITY of Oswald acting on behalf of the mob, or perhaps some shadowy foreign agency, but the overwhelming evidence points to only one logical conclusion...that the President of the United States, the most powerful man in the world, was killed by a little pip-squeak with a "head full of scrambled eggs."