There is but two to chose from. The Leupold Mk4 series and the nightforce NSX series. That is it, no other scopes out there are going to stand up to the recoil abuse that rifle is going to dish out. Maybe some of the high end Europen brands might but all the guys I know with these kind of rifles are using only thoese two brands of scopes.
You ain't gonna put a BSA on that sucker I can tell you that right now. One shot scope gone mount another.
If you are spending less that $1000.00 on a scope for that you are wasting money.