This older single shot Savage is hammerless with a tang safety and if you can use Winlites or load your own it may be what you want.
http://www.gunbroker.com/item/694749370

Depending on the size of the young person, (if small) I alway thought a gas operated semi plugged to only hold the one in the chamber might be a more comfortable choice. But that moves you away from your original request.

The Weatherby SA-20? I don't own one of these but I've read good reviews.