I have a grandson that will be 10 years old in August. For the last 2 yrs I have been teaching him about rifle and handgun safety and how to shoot. We started with an old 22 single shot rifle of mine and more recently he has shot a 22 revolver I have owned for a number of years. He is doing great, is an accurate shot and demonstrates good gun safety. Recently he has asked me if he can shoot something bigger. I take that to mean something larger in caliber than 22lr. At what age does it make sense to let a child shoot a 9mm or something else? At what age and what sequence makes sense? Your own experience and suggestions are appreciated. Thanks