so the only thing different in the process is the cad design being thrown into the controller and perhaps the cutters....seems to me it would be just as easy (if not easier ) to run an existing design as it would be a new one...
IF that were all there was to it. I don't know how Al does things, but all production shops have one thing in common: Re-tooling and set-up isn't quite as simple as we think it would be, even with automated CNC guiding the actual production operations. How Al can offer so many block and cavity options
within a group buy and still be time-efficient baffles me. Recently we had some parts made for a custom job, straight dimensional CNC lathe work, and I chatted with the machinist a bit. He said he gets paid for setup and runs the machine for free. About 3.5 hours in programming, jig, tool change, and set-up time was involved, of which about two minutes was actual machining time.
Another challenge is knowing just exactly what to dedicate to inventory runs. A lot of that influence I'm sure comes from "re-run" requests on forums and individuals spearheading small group buy requests and gathering buyers.
As for the 188G bullet, I've wondered that myself. I really wanted it to come in lighter than that for my 11-twist M1A, but to get all the features I wanted for the rifles I wanted to shoot it through it basically has to be what it is. If anything is trimmed, it should be the end of the nose and it should be made with a more "pointy" ogive. No angles should be changed to save weight.