Doc S, Bought a 500 S&W handi a couple of weeks ago. Cleaned it and went to the range. Bought a box of BULLSEYE new manufacture ammo.(the cheapest in the store). iT WAS 330 hard cast RNFP.To me, the recoil was more of a push than a sharp crack. The recoil was there but was ok to shoot off the bench.This might of been the type of ammo I was shooting, I don't know the FPS.your 10 year old should be fine off the bench, just hold it snug. First time 2 to 3 inch groups with fire sights, not to bad. Good luck.