Creek:
Read BPs response again. He hit the proverbial nail on the head. Only hits count.
I have been hunting and shooting in the US for over 40 years. I have shot the 300 magnum guns. But, I do not own one. Why, because I hit better with a .30/06 or a .308 and I am smart enough to know that. This does not mean that there are not folks out there who can shoot the magnums with great effect. But, they KNOW who they are.
Shooting needs to be fun for kids if they are going to put enough time in it to get really good. Hurt them and they will turn to video games.