Congratulations Derek Rodgers, 2010 Open Class National Champion. Score High Gunsmithing thanks you for the privilege of building your winning rifle. We knew it was a real shooter when it came together but it took a champion like you to take to the Gold. Now it is on to the World Championships at Raton in 2013.
A list was compiled on www.usrifleteams.com of top open calibers, but keep in mind that what's printed on the brass is not always what was shot. I think most calibers have been sorted out for the top 15 or so.
Derek is an awesome shooter and friend.
Edit: Derek was using his own rifle, not his dad's.
Ballard made the comment that he thought the 7mm gave him an advantage before. Now that a lot of others are using 7mm, he no longer has the advantage. I've been very impressed with all the 7mm loads.