Agreed. Jourdounnais draws twice when shot: once for himself, once for the barrel. Two distinct actions that allow you to do the same thing twice.
Willy the Kid and the Volcanic are possible but don't add antyhing. Both actions give you unlimited bangs. The only benefit would be to hold the gun so no one else can get it (though as mentioned - it is easier to steal then to sift through the discard).