Designing the 2-diameter paper patch bullet.

[Distant Thunder]

Kurt,

I cut these paper patch molds in my vertical machining center and use just standard endmills. I use my CAD/CAM software to create a 3-D model of the bullet, form that I make a 3-D model of the mold blocks and use that to generate the code for the machine to cut the cavity. The process works pretty well and allows cutting just about any nose profile without special tooling. Grease groove bullets do require special cutters and I have made many of those kind of cutters.