here, checkout this URL : http://www.custersportsmensclub.com/tactical3gun.html for more info, or you could setup one easily in your range by following the rules published on the USTRA website. Match fee at Custer is only $15. Really cheap considering the kind of stages they put up.
Scoring looks complicated, but all we look for is, as long as you have two hits and one in the A zone, that's automatically neutralized. if it's Charlie/Delta, then -1. We just count the penalties. scoring is VERY fast, and we score and tape as we walk downrange following the shooter.
some of the stages were 270deg bays, so 180 is behind the shooter. RO will try to stay behind the shooter but depending on stage design, might end up on the side.
the longest range we've ever shot is 135yards in the jungle stage.