If you don't mind a used rifle, the Remington 788 in .223 Rem is pretty darn good. I was working up a new load with mine last weekend using Hornday 40gr V-MAX and Varget powder. When doing load work, I load 4 rounds in each weight. This was the first group I tested. I stopped testing after I finished those 4 shots. No reason to waste any more bullets, powder, or time. It was good enough for me.
