I consider this the definitive book on shooting a rifle, David Tubb isn't an armchair expert or gun writer, he's consistently been one of the best shots with a rifle for over 40 years, probably holds more national records than anyone in history.
http://www.davidtubb.com/book-rifleshooter
Who is David Tubb?
http://www.davidtubb.com/About-David_Tubb