I'll try to answer some of your questions now that I can remember. I'll measure the other dimensions when I get home.
What bullet are you loading to be have different results from factory loads?
Berry's Preferred Plated 124gr Round Nose. The outer diameter of the base of the bullet is 0.356"Is it a bigger diameter/longer bullet?
I haven't pulled a factory bullet, but I am comparing it to Fiocchi 9mm 115gr FMJ RN cartridgesWhat's your measured taper crimp with your reloads vs the factory ammo?
I forget the factory rounds, but my crimp varies from 0.3785-0.3800 with different head stamp cases.What's the oal of your cartridges vs. factory?
I believe the factory rounds were 1.15xx" long whereas mine were 1.1375"I also took some photos of the slide stop to share: