Yes, the balls in my loading block carry a thinner patch, than what I load the rifle (or Bess) initially, with for the hunt, in a clean barrel. I figure any follow up shot will be at close range, so I'm not too worried about opening my 100 yard group up by an inch...but I do want a fast easy reload. If the animal should run off, indicating a poor hit, I'll sit down, kill some time, and wipe the bore down and reload with the thicker patch, from my bag of tricks. I find it interesting that you vary ball size, rather than patch size. ?? I only have one ball mold each for my Bess and Jeager, and one for my .58's. Have quite a few .58" slug molds...a collection of "didn't works". Or "almost worked". Or: "didn't work good". !!!