Hey everyone..just completed a 20 inch bull barreled AR and need some advice on some loads.. I dont have the funds to test every set up so I figuered I would get some help. I had really good results with 80 grain A-Maxs w/ varget but I want to find something magazine length. Forgot to mention its a 1-8 twist. Its just a target gun, so no need for hunting loads.. thanks everyone.