Dave, I've had my Leupold's move from rubbing against my pack even with the ring locked.
Fortunately, they don't change focus nearly as fast as the scopes using the euro systems do.
I've never heard you mention aything but hunting from a stand. Alot of my hunting involves still hunting or tracking where I sling my rifle upside down to get it tight to me so I can free both hands for glassing. Because of this difference, I'm sure you haven't had one move. E
