One reason I was tentative about loading 9mm's was that I was under the false impression that the entire neck area holding the boolit had to be taper crimped. It stemmed from a lack of research in retrospect. When I realized, thanks to the very learn-ed people on this site, It only takes a small amount of crimp to do the job. In fact, if I had done what I had originally envisioned, I would have probably inadvertently sized the boolit too much and caused blow by=leading.