What's "dangerous" about recoil? A person only lets that scope smack 'em upside the head once(Well, a smart person learns "eye relief" after the first time). Can you say "magnum eye"?
I don't think it's dangerous either, but I will say that for people without a history of shooting, firing a hard recoiling rifle will help them develop a flinch. I've shot M-14s with the standard steel butt-plates, and after a few hundred rounds, your shoulder begins to get sore. That's not the case with my Fed Ord.
Mark
Try shooting 100 rounds through a 30'06 1903 or 1903A3. I've got both and I'd say they have more punch on the bullet end than any one of my Garands......