Specifically 9mm and .45 ACP, and more specifically on a progressive press. What do you folks do with regards to case length trimming and crimping? When using my old single stage RCBS press, I would, as a standard practice, trim every case after de-capping and re-sizing regardless of actual length. Then I would set the bullet seating / crimp die for the trimmed case length. With my new RL-550B I am wondering if I have been overly anal about this (probably - I am an engineer). I now have the separate crimping dies for the 4th stage of the Dillion, and I have the bullet seating die screwed out 2 turns so as not to crimp as per the Dillon instructions. How sensitive is the case length to the set point for the crimp die? There is a .010" dfference in the specified "max" and "trim to" case lengths for these two calibers. I know that you do not want to have excess case length as these cartridges head space on the case rim. Should I worry about this at all, beyond trimming cases ONLY if they exceed the maximum specified case length? Do you set the crimp die for a "mid-range" case length?