bigedp51
member
Your forgetting something fguffey, something really major, the Army ran tests firing the 7.62 NATO from the M1 with and "without" the chamber plug. And the M1 fired the 7.62 without any problems, I suppose now your going to say the military never fitted the M1 with a chamber plug as a means to use the M1 while transitioning to the M14 and the 7.62 NATO cartridge.
Looks like your going to need some REALLY big feeler gages there fguffey.
Looks like your going to need some REALLY big feeler gages there fguffey.