Originally Posted By: rocky mtn bill
....The 32 Colt long has a bigger base diameter than will chamber in my rifle....

Sorry about the 38 spec parent case thought. If I'm not mistaken, that head and rim size can work for some rook variations, but certainly not yours. My thought was none other than if some one could pull off machining that insert, they could probably come up with a form die quite a bit easier. It sure would help though starting with a closer fitting parent case.