There aren't any long range facilities in NE PA that I know of. However, there is a club just off route 80 that has a 300 yd range with 35 concrete benches and a complete overhead to keep you out of the sun/rain.
The club is the Mainville Sportsman Club and I shoot there myself. They currently have open enrollment if you're interested. Curt, from Curt's Gun Shop in town is the club secretary and can give you all the info on the facility where there are at least 6 different ranges.
You can see their web page here:
Mainville Sportsman Club :: Home