I've never had a problem reloading military 223 without any additional work over what you would do with commercial brass. They have always deprimed and reprimed very easily. The brass tends to be a little thicker, so your max loads will be slightly lower than the book max in most cases.
Larger military brass (ie. 300WinMag) has needed swaging or cutting of the primer pocket in order to reprime, but never .223.
Good luck ... Crayfish