If the bullet you have is a jacketed bullet, and you intend to cast lead bullets, the lead bullets are generally a tad larger than the jacketed bullets. Give us a little more info as to what you are trying to achieve. But, to answer one of you questions....Yes, there are mold manufacterers out there that will custom make molds to your specifications. But, before you pay the big price for one of these custom molds it is best to make sure you order the right size (diameter)...or you will have a really nice paperweight mold.
