Ive got a Savage 10fcp with a mcmillan A2 stock on order. It should be here in about a week. I'm putting a Burris Tac30 scope on it and I dont think I will have enough elevation with this scope to get me to 600-800 yards so I'm gonna put on a 20 moa base. With a 20 moa base and medium or high rings will I need an adjustable cheek rest to get my eye in line with the scope. Does anybody have this setup. Thanks Ryan