Why Dillon dies? You can use any regular old dies in it. I reload several calibers in a 650. I've never used Dillon dies.
Regular dies are radiused at the bottom plenty enough. I'll also point out that 9x19 is a tapered case. The case mouth will always be narrower than the bottom of the die so that feature is absolutely no value for that cartridge. Some people specifically avoid the Dillon dies for that very feature. They don't always do a good enough job sizing the case down towards the bottom. Lee dies do a better job than most in this regard.And the sizing die has a larger bell mouth to avoid messing up the case mouth if the case is not fully inserted into the shell holder.