I was just sitting musing about sights and benchrest shooting and wondering what is the best scope height to use. I tend to use mounts as low as possible and a high mag and get reasonable results (we all have a bad day don't we?) Anyway, I was just looking at some of the truly OT benchrest rigs used by, particularly, the Americans and their scopes are well away from the gun itself. This got me theorising about whether the use of a riser rail to lift the scope up higher has any advantages or disadvantages. I am particularly looking at airgun shooting and not .22 lr but I suspect that the question is still valid for them. As is usual regarding my internal debates I cannot make my mind up so what does anyone else think?