I saw pictures of a man who got whacked by a .470 with a scope from a bench when it doubled. He was thrown from the bench and knocked out. Ended up with a massive scar on his head which required a zillion stiches. The rifle got all fcuked up when it hit the deck. Now, this man was told that scoping a .470 is a bad idea beforehand. After the episode he tried to sue the gunsmith, but later withdrew. After seeing this, I can safely say you'd be nuts to scope a big bore DR.