Daughter Eldest touched off a .45 flintlock loaded with 50 gr of FFF and a patched roundball, setting up on shooting sticks, at age 3. She giggled.
All my kids take 4-H Shooting sports at age 8, and get their own .22 single shot to shoot in a silhouette match.....
They take hunter safety whether they want to hunt or not, when they turn 11 or 12....... (just like they take swimming lessons whether they want to or not: deep water and guns are out there, and knoledge beats ignorance, because what you don't know can hurt you.)