I have a Savage short action, a really good stock, and a rifle basix trigger. I am looking for a nice long range hunt round to chamber the rifle in . I am going to use this rifle for whitetail and some target shooting . I reload but am a begginner and would like it to be easy to reload for . I am not looking to shoot past 600 yards but would like it to be very accurate out to 600. Also what brand, length, and twist for the barrel .