Jascoesens - look at it this way. Lets say you took your scope and layed it in your open hand. Then you smacked it with a rubber mallet. It would fly off your hand and onto the ground - and probably not get damaged. Now set it on a concrete floor and give it a whack with the mallet. You are definately going to jar the internals. Maybe enough to cause damage. Think about recoil as the invisible mallet.
The lead sled is a good idea and I wish I thought of it while pattering my 3 1/2" turkey gun or sighting in a 460 Weatherby for a guy.