As most have stated....a lot depends on the maturity of the Youth Hunter,how well they have been trained and how they handle a Firearm as far as Safety and using common sense.I've seen some really good sensible Young Hunters...and I've seen a lot of Older Mature Hunters that I do not want to be around or hunt with! Yikes!!!
I started out at an early age in Hunting,we went out on excursions at an early age,shooting BB-Guns and then 22lr Rifles and then a few times using a shotgun for rabbit and doves.I was sitting on my Dad's lap at 10-11 years old learning to shoot a 30-06 and a .308 Browning for Deer Hunting,at around 13 years old I was going Deer Hunting....only thing I wish was that they had the Hunters Safety Course when we were younger because I learned a lot after growing up and taking my 2 Daughters on the Youth Hunts and taking the Hunter Safety Course with them....we're never too old to learn more about Safety and Respecting the Property and Land Owners wishes where we hunt.