I do not remember if I told you this earlier. If I were you I would buy the Redding Taper Crimp Die. I prefer the taper crimp over the roll crimp. The length of the brass is not as critical with the taper crimp, or in other words your case length does not have to be exact. You also do not need to trim as much with the taper crimp, and you will get a lot less smashed cases with this die.

I never seat and crimp in the same stage. Tom.