Some dies sets allow for full reloading with a few dies. Others might demand a fourth die for the taper crimp. Taper crimping, as an alternative to roll crimping, really should generally be carried out While using the 9mm. The underneath pictures and data are from an excellent in-depth article https://9mm-brass52962.blogproducer.com/44134780/not-known-facts-about-reloading-9mm-luger