I usually like 1/8" or a bit more. Hunting frequently in cold, wet climes, an ice bridge between the barrel and scope if the clearance is too close, and hard to clear. Also provides for enough room for scope covers.
Same here! This is on 50 BMG but it's one of the best video on scope and mount flex I have seen...
Interesting recoil footage! But I would imagine a 7mm08 would have maybe 25% of the recoil compared to a 50?