Capt Worley PE
Run silent, run deep
I concur with this. I can tell you from experience that todays pump guns will not do anything but pi$$ a rat off. My spring gun (sniper gun, according to my BIL) will shoot the wadcutter .177s through both sides of a water filled can. I imagine the varmint rounds would be even more destructive.Stick with a .177 pellet. Easier to come across.
They make a lot of nice compressed air rifles nowadays. However, finding a spring action air rifle with some oomph behind it is often the much cheaper route.
Plus, all the neighbors here is a muted 'thut' when it fires.