You will only discover how good you are as his mentor and if his ears are only painted on.My 15 yo nephew is staying with me Thursday- Sunday. Saturday we will be shooting his first 100 yard rimfire matches(open and scope). Loading 223 is on HIS list of skills he wants to explore. Also he will see/use the shotgun loader, as he pheasant hunts. Guess I will know where he's at in the bell curve after a couple hours at the bench.