The crimp subject has caused me a lot of questions when it comes to auto pistols. I am Also fairly new to loading 9mm, and have had mixed results with accuracy, especially with coated bullets.
Does anyone have a preference for the type of crimp/ bullet ? Like a certain crimp that seems to work better for coated and a different for jacketed. At this time I have only used the taper crimp for autos and roll crimp for revolvers, but I did order a lee FCD die yesterday.