Heading over the mountains in a couple of weeks to help get my mother ready for a move to SW Washington. It's been ages since I've shot in Spokane, and never anything bigger than .300WM. I think SRC doesn't allow them, but am really unfamiliar with anywhere that might. I think Fernan is also a little short (I'm looking for 300 yards at minimum to sight-in or longer if it's available.) Any recommendations?