[BigBobber]

Look at Zapruder frame 313 here (Warning: not for the squeamish):

http://www.jmasland.com/z_color/z-313.jpg

This is right after the fatal shot. All the damage and ejecta are to the right front of Kennedy's head. The back of his head, which all the conspiracy folks say was blown away, is intact and undamaged. It couldn't be any clearer.

[justshutupandtakeit]

Thanks for your attempt to clarify your comment, I don't agree with your interpretation, if anything the ejecta seem to be going to the side not the front, not the back either but just the side. This makes no sense for either a front or back shot but does imply the bullet could have been an explosive one. Nor does it explain the part of his head blown onto the trunk of the car (which Jackie was trying to get) or onto the street behind the car or the shower of blood/brains which landed on the motorcycle cop. There was not enough blasted into the car for the shot to have been a rear shot from above. That cloud in the picture should have had a downward motion to it in such a case not more or less parallel to the street as it seems to have.

The undertaker I earlier referenced did not say the scalp was missing from the back of the head but that bone was missing. He also stressed that there was no damage to the face except for a small hole in the left forehead, consistent with an entry wound from the front. At rear shot from the TBS would have produced an exit wound which would have damaged the face as best as I can figure.

[Shooter 2.5]

http://mcadams.posc.mu.edu/lateral.gif

Compare this to frame 313.