[Bart B.]

Unclenick, a set of drawings showing reality will help a lot of folks. But you'll catch a lot of flack showing primers backing out as pressure builds before it gets high enough to stretch the case back then reseat the primer. Too many people believe the case head's held very tight against the breech face and the primer stays in place when the round's fired.

I've oft times thought about making a set of drawings showing how a rimless bottleneck case centers its front end in the chamber shoulder and its back end against the chamber wall, not perfectly centered floating in space or laying in the bottom of the chamber when fired as claimed by thousands. I've dodged all the flack from others saying it isn't so.

Best wishes in your endeavor.