I was a member for many years. Rifle range was closed completely about 5 years ago due to stray rounds ending up in the housing development south of the golf course. There was talk of covering the top in but don't know if it was ever done. I moved from GP 4 years ago so call them and see if they ever re-opened it or stayed just with pistol and trap/skeet and archery.
IIRC the range a wapiti is only out to 200m or 300m,.. I believe the ValleyView range is out to about 500m. I just joined but haven't shot yet,.. and the couple of times I have been there to visit it has been dead,.. of course its winter,.. so the majority are shooting handguns downstairs. It will probably pick up once the weather warms up.