I usually wait a few months do let the facts dribble out on things like this before I decide who’s lying and who’s telling the truth. So I am relatively uninformed about the Sandy Hook shooting. Quite frankly it is just to horrible to think about right now. So I am not part of any conspiracy or cover up. Just bringing FACTUAL info into the thread. Now as for shooting a 556 round in a rifle designed for a 223 I will take your word on that. I do not own either a 556 or a 223 so I don’t know if that is a common practice or not. I’ll just go back to lurking. :)