I just started casting my own rb's and the fit I had with the Hornady round balls was fine. The new balls cast a little bigger and it was a hard start to get the ball going. I went to the local Jo Anns and they had some Chinese pillow ticking that measured .015" it looked cheap but maybe thats just because it said made in china on it. My old patching measured .020". Well I went out today and loaded up with nothing changed but the patching and first 3 shots went into one hole at 38 yards!!!! I was concerned that fouling would be worse, with the old patching it was nonexistant.It still is!!!I'm a happy camper now and all the money I spent for mold, handles, pot and ladle is paid for with the first 600 balls I moulded. From now on they will only be a penny or so apiece.Good things really do happen. FRJ