You seem to have forgotten the basic scenario that the police used to convict Lee Oswald...... They said that he sat on the box to the rear and rested the Carcano on the stack of three Rolling Readers and declined the muzzle down onto Elm street in front of the TSBD and murdered President Kennedy......
They said he used the boxes as a rifle rest ......I'm here to tell you the feat was impossible......You must stick with the story they presented......
Walter,
Hey, everybody makes mistakes.
(Hell, even I made a mistake once.)
Analysis of the cartridge ejection pattern in the film
The Lost Bullet strongly suggests that one shot was taken from a slightly different vertical position than the other two, and that none of them were taken by a person sitting on that box.
Deal with it, dude.
-- MWT