How the hell do you know the weight of a bullet that you don't even believe in?
Something caused the violent reaction back and to the left. A "jet effect"? A "neuromuscular reaction"? Man you'd better study up on neurology.
You know who did study extensively on ballistics and forensics? Sherry Fiester.
What was it, John? A cannonball? That's what a bullet would have to weigh to knock someone in that direction! Yeah, there was a cannon parked behind the stockade fence and it was fired from the knoll. Furthermore, where did I say that I don't see President Kennedy moving backward? That is an insinuation on your part. O course I know he moves backward, but not by a bullet! My personal belief--and this won't matter to you--is that a neuro muscular reaction caused that to happen. And there was no such thing as "to the left". That is a fairly tale. John Kennedy was already leaning hard left, his body went straight back, no "to the left" about it.
Yeah... I know Sherry Fiester "studied" ballistics and forensics. So did a lot of other professionals who have studied the Zapruder film, whose profession is forensics, ballistics and pathology. Excuse me. I rely on their findings rather than the erroneous findings of a conspiracy nutter.