I currently have the ABC's of loading, the Hornady 8th edition, and the small Lyman's "Load data" books for Auto loaders (9mm) and Popular revolvers (.38 .357). I still feel like I do not fully understand all the ins and outs of crimping. I have not had any of my .357s "back out" as it where, so I think I am doing that correctly. But if I understand correctly, when I start reloading for for 9mm I need to be concerned with how the crimping may affect the head spacing. If you guys had any suggested reading, that goes deeper into crimping, I would appreciate it. If the book also discussed matching powder burn rates to projectiles that would be a plus.
Thanks!