Great to have you on board Dave. There are a great bunch of guys here, and very knowledgeable. I'm not far from a "newbie" myself, but I've learned a ton on this site.
I'll tell you what the experts here will tell you, spend some time in the FAQ's. Just about every Handi question you might have is answered there, along with some great accurizing tips. I don't have a 223, but my 243 went from a 4" to a 1" gun by following those tips. In the hands of a real shooter, it would do better than that!
Ben