Thank you all. Lots of great comments. I think the suggestion to have one of each type of crimp die is a good one. I'm going to do that and use the taper crimp die for the light 44 SP. loads, and roll crimp for the heavy loads. I have 2400 and H-110 for those, and for them I will definitely use a good roll crimp. Good comment about the slower pressure rise with slower burning powders. Also, I don't want my new revolver locked up by a bullet unseating itself from the recoil.

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What could possibly go wrong?