Roger Dat, I used to have a squirrel problem now my drinking team has a funny little squirrel shootin problem....
only kiddin!! My son picked up the Gammo "Big Cat", and he shoots those magnum .177 caliber pellets from Crossman, I believe.
He also put some sort of Airgun Scope on it, he headshoots them at 70 to 80 feet, and it's not real loud.
No squirrel problem.