Found this with google
This might help too
Hey guys, new here, so if this is in the wrong place feel free to move it.
I just recently moved to Denver CO, and am looking for a range to shoot at. Back home in St.Louis MO there was a private range, if you were a member you could go there any time of the day and there was no range master or supervision. I would like to locate a range like this in Denver, so that I can keep practicing things such as drawing from a holster, which would not normally be allowed at a typical range.
That silver bullet place is like 1 mile from my apartment, but they don't let you shoot anytime of the day unsupervised I am looking for some privately owned "underground" type of a place, you know, the kind you find out about by "word of mouth" wink wink