The problem is (Besides the misadjusted seat/crimp die.) that you are using a bullet with no cannelure on a roll crimp die.
It will be very tricky to not overcrimp and still get a roll crimp without a cannelure.
Maybe there's someone who has a better sucess rate with it than I.
Maybe you would have better luck with a taper crimp die?
I'm not just a gun.
I'm YOUR gun.