Some dies sets make it possible for comprehensive reloading with three dies. Some others may possibly need a fourth die for your taper crimp. Taper crimping, rather than roll crimping, ought to generally be accomplished With all the 9mm. My the latest order for the Lee 9mm carbide "undersize" resizing https://stephensdnxg.verybigblog.com/36995545/5-easy-facts-about-9mm-casing-described