I've used those "Tip-off" mounts for a lot of years, & on a lot of rifles including a 760 - 30/06, & never had a problem with "zero". I was told that I would, on the first rifle I put them on, but a really excellent local gunsmith at the time told Me not to pay attention to them. Just be sure the contact surfaces are free from debris before swinging the scope back into position. I never made it a habit to swing the scope off & on for no reason, but considered it a "safety net", if "I" happened to fall, or bang the scope, during a hunt ! I Always made sure the open sights were aligned properly, along with the scope.