338 lapua/nightforce

[joe30007]

I am building a 338 lapua on a predator x action and 30" kreaiger barrel. I have been looking at scopes and bases the nightforce 8x32x56nsx has 65moa elev.and the 12x42x56 has 45 moa why so low and is that enough? Any sugestions on brakes? Looking at the definsive edge and flint & frizzen. Thanks for any help first all custom gun. Im getting kreaiger to chamber is their anyone better?