The Single Bullet Fact is the only logical answer to the path of CE399.
Connallys back wound was Oval, meaning the bullet was interupted in flight.
JFKs neck provided minimal resistence to this Full Metal Jacket Bullet and caused the bullet to start tumbling into Connally.
Full Metal Jacket Bullets are designed to pass through bodies and do not create as much damage as hollow point, so it’s quite illogical that it was even used at all, but does tend to sum up the personality and twisted thinking of Oswald.
Check out www.jfkfiles.com/ the research there is quite informative.