Joe, thanks for all. Was considering one of the Traditions kits but don't know anything about their quality. .32/.36 sounds like the ballpark to me.
These kids are winners, and whether they take to it or not is their call, but I figure that a little exposure to wood/metal work and maybe some finish fumes will open a horizon or two. Their dad is of the same mind and seemed enthused about the adventure.
How does that Crockett gun shoot?