I just got a 300 WSM for my dad. He is not a mil-dot reader and he doesn't want to learn. I found a scope that has a turret for 300 Win. Mag. 180 grain bullet. I don't have either gun. Everything that I see the 300WSM and the 300WinMag preform with in a couple of inches out to 500yrds. Is this scope in line for what the usage and will it work for him to just Range it and dial the yardage in? Thanks for the help.