I don't know if they still do or not, but at one time Dixie Gunworks used to offer a rather economically priced mold, cut to any size you wanted. They were likely not extremely high grade & had no built in sprue cutter. If still available they might show you enough to determine regulation & if that was satisfactory, then you would not mind springing for a more expensive custom job for better accuracy. Building these molds was in fact one of the very early mainstays of DGW which helped it become a successful buisness. I know they stayed in the catalog for years, but don't have a current one. They do have a web site.
PS; another option is, if you have a machinist friend who can build a set of blocks to fit a Lyman or other handle from soft aluminum they can be roughed pretty close to size with a 5/8" ball nose end mill & then pressed to finish over a 5/8" steel ball. Dowel them while still fit over the ball for alignment. The lead will shrink a few thousandths as it hardens & this would be extremely close to desired size.
Last edited by 2-piper; 07/25/08 06:53 PM.
