I would also suggest a long-time rifle loony should have (or have owned) the following scopes:

Pre-internal adjustment B&L's, Lymans, Untertls, Weavers or whatever. Or those older scopes that only have internal elevation adjustments, since the rear mount was expected to adjust windage. Enough OLD K-model Weavers to experience the joys of internal fogging, or uncoated lenses.

They should also have dealt with the off-center mounting holes, whether gunsmithed or factory.

Which is why I love many newer scopes, especially Nightforce, but have enough experience to know the scope is still the weak link in rifle accuracy.....

“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck