Wow! That's cool! I could post a lot of pics of my daughter and oldest son (soon to be 7 and 4) doing the same, or begging to.
Unfortunately, the grave risk of lead contamination is far too serious for me to let them help out any more. It was hard, but they've been banned from the reloading area. And they aren't allowed to play on our indoor range any more under ANY circumstances.
Adults can handle a pretty serious dose of lead in our systems (it is BAD for you, but the effects are not as quickly pronounced) but kids CAN'T. Even a little exposure is way too much. And the younger they are the worse the risks.
Thanks for sharing such a cute photo, but please, PLEASE be wise.
-Sam