The SS and FBI place 4 shots in and around Z313 - just not Z313

[Chris Davidson]

I agree that is possible - just messes with the mind how they could make it look like it was up by Moorman.

A more reasonable Occum's answer is that this last shot was created to match the desired scenario of 3 shots 3 hits... Since all involved knew this didn't happen the Zfilm, if actually taken that day would show the corner turn, limo stop and multiple shots overlapping... the stop and flurry seem to me the more important thing to remove from the film.

Do you agree that the math makes sense for them to put a shot around 5+00 as there is no place else to put a third shot.. allowing for reloading at 2-3 seconds.. about the length of the stop?

Yes,
It appears they were using the same thought process here, counting from extant Z207, which does not match where shot#1 is actually plotted on the SS/FBI plat.
Remember, West, via the Time/Life investigation, documents a 1st shot flat line location of 163.65ft. Which, when plotted matches Z207 on the SS/FBI plats.
chris

Mr. SPECTER. Now, as to frame 249, that is how many frames beyond the first point at which the spot on President Kennedy's back was visible after he passed out from under the oak tree?
Mr. SHANEYFELT. That is 249?
Mr. SPECTER. Yes.
Mr. SHANEYFELT. It is 42 frames.
Mr. SPECTER. And does a 42-frame count have any significance with respect to the firing time on the Mannlicher-Carcano rifle?
Mr. SHANEYFELT. Yes; we have established that the Zapruder motion picture camera operates at an average speed of 18.3 frames per second. And we have been advised that the minimum time for firing the rifle in successive shots is approximately two and a quarter seconds. So this gives us then a figure of two and a quarter seconds of frames; at 18.3, this gives us this figure of 41 to 42 frames.
Representative FORD. Would you repeat that again, please?
Mr. SHANEYFELT. The camera operates at a speed of 18.3 frames per second. So that in two and a quarter seconds it would run through about 42--41 to 42 frames.
Representative FORD. Then the firing of the rifle, repeat that again?
Mr. SHANEYFELT. As to the firing of the rifle we have been advised that the minimum time for getting off two successive well-aimed shots on the rifle is approximately two and a quarter seconds. That is the basis for using this 41 to 42 frames to establish two points in the film where two successive quick shots could have been fired.