I'm down that way but don't have any sweet shooting spots at the moment, not for lack of trying.
If you get a $20 dollar hunting license online from the State, you can use the State gamelands shooting ranges. There is one northwest of Allentown and one by Elverson [French Creek]. I go to French Creek shooting range to shoot at 50 and 100, although it's not ideal, it gets pretty crowded and you need hardcore ear protection- so I'm still on the hunt for some land to casually plink and set up my gear.
I'll PM you to stay in touch
PS Check out a new facebook group Central PA Airguns that someone here started.