Mr. E, I think last time we talked about bar shot was near the end of the Gettysburg "snow show." Anyway, here's Michael's extensive thread with more types of unusual projectiles than I've ever seen anywhere else:
http://www.vikingsword.com/vb/showth...ght=grape+shot
BTW, I am not sure all of the items pictured are legitimate cannon shot. Some of the "double-ended" shot look more like simple dumb bells to me, so I would not necessarily accept their mere presence on some museum's website as proof that they are authentic bar shot.