I am glad that you asked.
It took 61 cm (24 inches) of ballistic gel before the bullet started to tumble.
I don't believe JFK's neck was anywhere near that width.
According to the WC - the bullet that transited JFK struck no bone and left a very small circular hole in the throat - so why would it tumble between both men?
How do you know the bullet didn't strike JC at a tangent hence leaving a larger hole?
Dr. Robert Shaw elongated the back wound on JC by tissue debridement. He also corrected his official report which contained an error.
So much for a tumbling bullet.
Firstly, ballistics gel is good and all but we are talking about a bullet that hit a relatively solid object going through the neck and then emerging back into the air.
Lattimer recreated the neck with a neck and then put a card up in Connally's position to see if there was any tumbling and 5 out of 6 test bullets tumbled.
Secondly we know where Connally was hit and that was on the virtually flat of his back next to his armpit.
And we know the path went down and out just below his right nippple.
So we are left with just working out the maths.
1. If a bullet tumbles it's still moving in one direction and when this tumbling bullet strikes Connally it will make a keyhole in that shape.
2. If a bullet strikes at an oblique angle then we can create the same dimension but how do we account for the angles either he was shot from a blimp and the bullet magically changed direction as it passed through his body or what?
Geez Louise, it looks like the "tumbling bullet theory" gets to live another day, but do try again and next time bring your "A" game, K?
JohnM