Arlen Specter did not propose the "magic bullet theory"

[William Seger]

17. Nope

The frames before that do not show any forward motion. The forward head snap was very sudden, and since it happened within 1/18th of a second, it was very violent, as should be expected from a bullet hit.

Another specious objection is that the frame after the hit is very blurred (because the camera was moving), which makes it harder to analyze, but I have aligned the two so that the forward edge of the motion blur in the second frame is approximately aligned with the forward edge of the objects in the first frame. That means that any apparent forward motion of the head cannot be explained by motion blurring.