Hang fire in modern rounds is a myth as far as I'm concerned and if it is possible like you said a round not chambered is not really dangerous. If it went off near your eyes it could cause some damage but most rounds are not big explosives. Regardless in modern rounds its just not possible. Same with squibs out of a handgun. Primer creates enough pressure to push a bullet clear of the barrel.
Wow. You sure you wanna go with all those as absolutes?
Join the NRA/ILA
I am the weapon; my gun is a tool. It's regrettable that with some people those descriptors are reversed.