No mentione of any "active ... competitive shooting". Dustin validated this in an interview with the Lufkin Daily News.
Despite not actively participating in competitive shooting, Dustin may just be the single-best all-around marksman from all three seasons. In my mind, Dustin is the consummate "Bubba Jethro" (he hails from a town of fewer than 650 people in Texas) and probably one of the best-prepared Top Shot competitors to date.
I'll give you that. However, Dustin isn't a standard Bubba Jethro, he's the king Bubba Jethro. He's not just a Christian Camp counselor, he's pretty much the owner (I think his family owns a lot of land). If you watch his audition video, he literally has hundreds of acres of land that he sets up for his private range. 750 yard range in my backyard and only working 4 months of the year? Yeah, I would hope to be a pretty good shot too if I had access to that.