I have decided that I'm going with Seeking products for my 300WM build. I need help on selecting rings and a base for its' intended purpose. I will have a #7 barrel on my stick and I will be using a Nightforce 3.5x15x50. My intent is to shoot steel out to 1500yds. Do you guys think I need a 20moa base with the Nightforce? Forgot to add, I am using an Accuracy International stoc, if that matters.