I am located in Spokane but only have springers. I too, would like to find somewhere to shoot where ear protection is not required to muffle the P.B. shooting.
30 years or 40 years ago you go lots of places, not the case any more. There are still a few but you better see who owns the land if it is private property. Public land with access
not in a no shooting zone is becoming fewer and farther between. Growing pains.