Try
www.benchrest.com. They have a forum that will get answers from people who shoot benchrest and there are links to manufaturers and suppliers. I never shot in the hunter class, but shot a light varmit gun in a few matches. My best score was a 250 17X, it is preety cool to shoot in matches and I found most of the people at the matches were really helpful. I have not had the time to shoot at any matches for the last two years but am looking forward to getting back into it.