That is a awsome group right there!!!
How old is your nephew???
Reminds me of a friend of mine... He went out and bought a $1000 varmint rifle and then bought a $900 scope for it... Bragged about dime size groups at 200 yards... I finally got to the range with him and actually got a chance to see this beast shoot... At 100 yards his groups were around 1"... Pretty much what I thought...