If you are trying to get me to agree that we are drifting off topic... perhaps, but I'm not all too concerned about it, and I addressed the topic in previous posts.
If you want me to agree with all you wrote, I've got a problem with this part:
particularly challenging cartridge to load for
...in reference to the .327 Federal Magnum.
Beyond getting the brass and chasing down appropriate slugs, there's nothing about it that's challenging in any way I can imagine. It's like loading slim .357 Magnums.