Quote Originally Posted by DG23 View Post
The more a guy tries to work (crimp) the case mouth beyond just ironing out the belling that was done - The more difficult it will be to get everything running smoothly in a single step with a single die.
Anything beyond removing the remaining bell is just smashing the cartridge. While it's possible to seat and crimp in the same step, my experience is that it's much easier to do so in separate steps and the results are better. There's no time savings when running a progressive press, so separate taper crimping is a no-brainer.

The term taper crimp is really a misnomer. Debelling is more descriptive and would eliminate a great deal of confusion. If you ever read where someone tells you to apply a heavy or light taper crimp, that's a clue that they don't know what they're talking about. One should just turn down the taper crimp die enough to remove the remaining bell and that's it.