.223 versus 5.56 ammo Jun 13, 2013 20:15:23 GMT -6 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by ozo on Jun 13, 2013 20:15:23 GMT -6 This is a good read.Maybe not the best, but well beyond 'starter'.....www.6mmbr.com/223rem.html