From what I understand any pistol is fine to dry fire, excluding many revolvers. Although dry firing any firearm with snap caps would be prefered. I've "snaped in" lots of dry fires with a m9(and much more with long rifles) while in the service and never had a problem. I'm sure the person who was issued the pistols (or rifles) before me also did the same. I've also read several articles that recommended dry firing on a religious basis as a way to improving accuracy.
I have to admit I don't dry fire my own collection on a frequent basis but do sometimes. Mostly because i dont have the time.
Either way, with milt issue or my personal collection, I've never damaged a beretta, or any other pistol, by dry firing.