I think all my kids had shot a gun by 8 years...except maybe the youngest. I'd have to ask her. However, she throws a mean tomahawk at the black powder rendezvous...probably something that's not DUmmie-approved either.
I can guarantee that they had done these things, too...
1. Drive a car {with help}
2. Drink a {taste of} beer
4. use curse words
5. have a fist fight {maybe not by 8, but not much later}
6. play tackle football
9. watch an "R" rated movie