The National Shooting Sports Foundation released this video with Ryan Cleckner today. In it, he goes over some of the basics for good rifle shooting such as sight alignment and trigger control.
Cleckner is the Director of Government Relations for the Freedom Group. He held a similar position with NSSF. He served as a sniper and sniper instructor with the 75th Ranger Regiment at an earlier time. I would say he knows a thing or two about shooting a rifle accurately.