I don’t know whether I can really add to this discussion but I will give my experience with leupold scopes. I have nine mounted on rifles from VXll to VX3i. I have criticized them in the past because I didn’t think the optics were as good as the reputation but I like them because of the lightness and for me durability and reliability. I must be lucky because for me I have not had point of impact shift, I have one 2x7 that has been on a model 70 that shoots to the same point of impact today that it did when mounted in 1993. The others have been shifted from rile to rifle but I have not seen a change in zero over the years. I have not had to use their warranty yet. I can’t do enough hunting with the restricted game limits to wear out a scope or rifle, but I do go to the range often. Because of the success I have had with them most of my hunting rifles wear Leupold and a couple wear Bausch& Lomb.