There is no sense, as far as I'm concerned, shooting a ball that isn't large enough to go to the bottom of the grooves. I doubt a .323" ball will do that. My Uberti 1849 Wells Fargo has chambers that are .327"!!! How could you expect a .323" ball to work in that? I use .330" balls. Bough 'em in a five pound plastic bottle at a gun show. I'll provide the label info, if you're interested.