i also do agree that it is not a great idea to shoot a .223 or even a 22 up in the ar but i also do not think it is a good idea to shot evena sotshell number 7 1/2 up either i have never hearfo a bulletfrom a hunters gun comign down and killing someoen usasly it is a lot of people shooting alot ofgun up in the air on new years or in iraq like they do over the it the ark47s i seen the other day where a person got killed by a 7.62 that feel ot of the air