I recieved my new Nightforce ATACR today! Only one problem, no rifle to put it on. I have one of Kirbys 338 ams on order, but still a couple months or more out. I am trying to get every thing ready for when the rifle is ready. My question is what hight rings will I need? At the price of nightforce rings I dont want to make a mistake. I emailed Kirby but havent heard back from him, I know he is busy so I am not worried. Getting the scope is just makeing me more excited. I am like a litle kid waiting for Christmas morning!