To solve the infamous "scope slide" issue, just use a bit of dollar-store clear-coat nail polish to the tip off rail and attach the rings before it has a chance to dry.
Seems like a good idea, personally I've tried so many things with mine, lock tight, modifying the rails, drilled and tap the rings to put a screw lock tighten on the receiver and still it moved. what you are mentionning make me think that the weight of the scope might have an impact with different solution. mine weights 16oz which I believe is pretty light maybe it'll be more affected than with a heavy scope...or maybe the velocity of the bullets.
Anyway my ultimate solution was to drill and tap the receiver, put picatiny rails on it and that's it, enough messing around for 2 months back and forth to the gunsmith. It didn't cost much as I paid for other mods that were not working so he didn't charge me for the rails and rings.