With all due respect Al, I question your statement here. I have yet to own a rifle, and I have had a lot of em, that had mounts move when the screws had blue Loc-Tite in the holes.
Yo Pete.....
I can't fault your logic, ain't really disagreeing with you! The real point is, you're AWARE of the problem.
IMO blue loctite is an inferior fix but it is a fix for a very real problem..... (BTW the OP was a statement, not a question
)
Here's the thing.... typical bases slide around a bit. Fact.
Jim Borden makes his actions in a way that combats the problem quite well. He
machines the threaded base holes smaller in diameter than normal tapped holes. In fact, the first time I swapped out screws (long story) I tried many screws in the holes before I dared tighten one in, the holes are so tight as to create an interference fit. They almost feel as if they're cross-threaded. This tight fit coupled with a close tolerance hole in the Talley base/ring sets that he has made for him combine to make a pretty bullet proof and easy setup.
I take even these one step further in that I put a thin film of rosin in between the base and the action. And I grease the screws.
But for most setups I just epoxy the stuff right onto the action as best I can. Trying for a permanent bond. After my Scope Checker showed me that my scopes were perty good I went after bases and rings and solved a lot of "scope problems."
Affixing the bases combined with alignment and lapping with Kokopelli equipment is time consuming but well worth it IMO.
al