Some users of that range are bit touchy about non-members using the range which they pay for and work at maintaining.
On the one hand, I can see their point. Would be nice for everyone to join who wants to use it.
On the other hand, I do believe (but stand to be corrected) that they cannot stop you from using it.
Just sayin'....
Lots of room there, though. No shotguns allowed, however. I think there's a handgun range just beyond the rifle range but I'm not sure as I don't have a handgun so I never checked it out. I've met former and present cops coming out of there though after they were done practising with sidearm cases in their hands, so I assume they ain't plinking Alpine cans with extremely short rifles.