I took my Charleville to a Boy Scout campout, explained things like "lock, stock & barrel" and "flash in the pan".  Then I let them load it & shoot it, with very close, one on one supervision. 

We shot it at a Redcoat painted on a refrigerator carton.  The first shot hit the Redcoat in the groin. 

Two of the parents called me a terrorist, took their kids out of Boy Scouts.