The 2003 Beyond Conspiracy experiment to attempt to replicate the SBT trajectory thru the throat at Z224 FAILED completely. The bullet exited the JFK torso well below the level of the throat.
So if they could not even replicate the throat exit trajectory at the flatter vertical angle at Z224 , then it’s even LESS probable at the steeper vertical angle of Z193 that the bullet trajectory would have flattened out enough to would have JFKs throat after entering his back where the autopsy photo indicates.
So if a Z193 shot would more likely have exited lower than the throat, and therefore thru JFK s body , then the bullet upon exiting could not have completely missed hitting JC.
The speculative Z175 ish bullet is supposedly hitting JC in the left thigh at 2000 ft/sec, because it bypassed JFKs body. Yet JC had no shattered bone in his leg and the bullet did not penetrate thru the leg. In fact JCs inner thigh would was shallow.
So when adding these improbabilities with the improbability that the little Willis girl could stop in less than 1/18th a sec after hearing a shot at Z193, then the A.Mason 3 shot theory becomes increasing implausible.