I've put a lot of pellets through air rifles with Hawke scopes and so far have had no problems. The AirMax 3-9x40 is pretty good for around $200.
I like that scope too. Mine started out on a Hatsan 125, and survived with flying colors.
Later I migrated it to an Air Venturi Avenger PCP. Great scope. I find max 9X is plenty for the ranges of these air rifles.