Sounds to me like you need to beat some sense into that boy!
KIDDING! Of course! [>:]
Maybe shooting just isn't his thing. When my younger brother and I were growing up we had equal shooting and hunting opportunities, but in the end I took to hunting and shooting Patrick took to fishing. Now he can tell you what lure works best on a certain day of the year, but couldn't tell you the difference between a .223Rem and a 7mmMag without looking at the headstamps. Shooting just wasn't his cup of tea.
Don't know what else to tell you. Maybe he'll come around in time.
Mike