My mistake and humble apologies for the bogus information, Aught - the NRA Range is 50 yards and accomodates anything up to a .460 Weatherby, NOT 100 yards and .470, as I erroneously stated.
No problem. I just remember that someone once told me it was 100 yards, and when I got there for the first time, I was a bit disappointed. Oh well, how much can you fit in the basement of an office building in Fairfax, anyway?