I just got my newsletter from the CO Rifle Club (Byers). They are in the early stages of building a Cowboy Action range and are talking about using it for IDPA (defensive pistol) matches/practice as well (my idea). I sent the pres. a basic range requirements and design email in the spring as well as some COFs. The good thing is they included this in their use plans for the range in their letter!!!!! Now, when it will be built is anyone's guess. They have all kinds of permits and hoops to jump through, but they are well liked by the county and powers that be.
CRCI is about an hour drive East from Denver out I-70. www.crci.org if you want to see the club info.
Greg