Good story, but I can’t say that I can fully follow it!
I worked on 3 of these machines, made by MATRA on France, the bullets came in loose, had to be picked up by a large wheel, painted the selected color ( black for AP, Red for tracer etc.. then fed in at the prescribed rate to the linking machine feeder ie 1 in 5, 4 in 5, then were linked into belt) Just mentioned it to show that someone has to actually make the ammo, and you can’t make it on one machine as fast as one gun shoots it, much less a whole war’s worth using JIT, or Not Just In Time as I called it. No one in the government has a clue as to all the pieces to get a factory built, much less manage it productively ( except maybe the people at oak ridge, I give them a pass because they seemed to understand that changes would have to be made to get the results they wanted, and were willing to listen)