At least my points were supported by evidence. You just don’t agree with the evidence. Not only is there no evidence of a first missed shot, or that JBC was hit in the back by the same bullet that struck JFK, or that JBC is already wounded in the chest at z226, there is abundant evidence that conflicts with each of those points.
I agree with the evidence. I just don't agree with your FUBAR analysis of the evidence. It is comical that anyone could look at the Z-film and conclude JBC was not hit until Z270.
Many/most CTs argue that JBC was hit some time in the mid-Z230s. While I disagree with their assessment, it is reasonable based on JBC's assessment. It ignores JBC's obvious arm flip at Z226 but it recognizes the obvious gyrations JBC went into following the arm flip. Your scenario is just plain cuckoo.