If you are trying to reach out to 200+ yards I would first look at the Hornady LeverRevolution line. They say they make a 300 yard gun of your 30-30 but most of the old 30-30s have 20'' barrels like mine so 250 is about max they got 300 because they tested in a 24'' barrel. I use them and have taken several deer with them and they shoot 1 1/4'' out of my Marlin.