New to this forum and thought this was as good a place as any to ask. Just got a Stevens .338 Lapua and am looking to outfit it with a scope. Was looking at the Sightron SSIII, either a 6x24 or 8x32. Biggest question/concern is will either of these scopes offer me enough adjustability to accurately adjust to a 1200+yd shot if zeroed at 300yds? Rifle currently has a 20 MOA rail on it. Trying to figure out if I need a 30 MOA or not. Your help in this matter would be greatly appreciated along with any other helpful info. TIA and look forward to hearing your comments!