With my Pacific DL266, #9 seems to like to hide in little crevices of the shot bar mechanism and make its escape when I don't have a shell under the tube. I finally just put a big baking sheet under the press to catch them before they ran off across the bench.I used to have a shotshell set up Like that.
Shot bottle broke and sent 7.5 shot everywhere , wife was finding it for years after.
Was banned to the crevasse down stairs after that.