I'm having a 338 Edge built for hunting. After much deliberation, I've decided to buy a Nightforce scope. Now, what magnification? I was pretty sure that the 3.5-15 would be enough, but now I'm thinking maybe the 5.5-22. I've shot out to 700 yds. with a 4.5-14, but this new build is going to hopefully take me out past 1000yds. What do you all think??