I am new to the forum my self and definitely not a expert . But I have a 700adl 270 . That I purchased in 2010 to deer hunt with . I killed a few deer with the factory scope before I upgraded . After I changed scopes I couldn't seem to keep a zero so I purchased a set of Leupold base and rings and haven't had any trouble since . I still use the factory scope on 22 mag and it works fine on that gun . But I would suggest new base and rings and a scope . But that's just from my experience.