I just got a new RRA 20" Coyote Rifle. It's going be my "distance shooter" so I just want it equip it with a Harris bipod and a good scope. I'm uninformed when it comes to scopes. Hopefully, those with experience in the subject can weigh in. I see a lot of different scopes out there. The variety is dizzying. What should I consider? If I plan to shoot accurately out to 300 yards, what size objective lens is best? I see them up to 56mm, but what is that appropriate for? Or is the size of the objective even relevant? I dunno. Is there an advantage to variable power? Or an illuminated reticle? For a scope with the same specs, what accounts for the huge difference in costs from one brand to another? I mean, I know Zeiss is better than Simmons, but in what way? Anything you guys can suggest in terms of what I need to think about will get you sincere thanks.