I've shot like 20 or 30 "magnum" slugs through my 590 and never had problems like that.
if i fire it one handed with a pistol grip on it, that happens (and it hurts my hand like hell).
But from the shoulder, it's never bothered me. Of course, I want to buy a double barreled 12ga just so i can fire both barrels at once for the massive recoil it gives.
Anyway.. just hold on to the fore-end tighter, or get a pistol griped fore-end.
I was thinking more like barrel damage or something when i asked the question.. hehe