It seems kind of odd having outdoor ranges handled one way, and indoor handled in a completely different way (in terms of how it's organized). Gun shops and gun smiths are sometimes located AT a range, but for discussion purposes, people generally don't mix the two topics. When talking about a gun shop or smith, people seem to only mention the range as a way of identifying which shop or smith they're talking about.
Maybe something like this:
Ranges
Ranges>Washington
Ranges>Oregon
Outdoor and indoor could merely be separated in the thread title. I don't think there are so many that they each require their own subforum. My guess is that when people go to look up a range on this site, they will first want to narrow it down by location (state).