I just purchased my first AR15 which happens to be the Bushmaster Varminter. I reload off of my 550B for all my handgun rounds and my bolt action 30.06. I have never reloaded for a AR 15 or .223 I am curious is anybody has any advice for this particular combination, and if there are any economical but accurate starter loads that the Varminter may like. Of course any load I start with, I will modify to what this gun likes, but looking for a starting point. Make/weight of .223 round, etc.