"Yah, Vee Ahf Zah Soh-Loo-Shun!"
Just to add & confirm what others are saying here: the combined use of Leupold/Burris Weaver-type bases and the Burris Signature
"Z" rings allows the installer the complete freedom to adjust the alignment without using any of the scope's internals at all except for the final accuracy tuning. (The Burris "Z"s are the Weaver compatible ones, IIR.)
In the past three months, I've fitted three sets of Leupold Std mounts (no, not Weaver style, but the setup "stich" is the same...) onto older Mauser bolt actions, along with those Burris Signature "gimbal-type" plastic insert rings. As well, Burris offers additional adjustments via some optional very offset inserts, up to, I believe, 20 MoA maybe? With that amount of possible corrective function, if you can't get your scope aligned, you've got some other major problem.
Bassett bases, "high" if you want to be able to use the iron sights as well, and Burris rings. Got it made, man!