The Lee carbide factory crimp die will size any case bulge below the crimp.

You only need enough taper crimp the close up the case mouth belling to streamline the case mouth.

The dies instructions tells you to turn the adjustment knob 1/2 turn after contact with the case mouth for a light crimp.

And excessive taper crimp will bulge the case and damage the bullets plating.

Bottom line, a taper crimp is used to streamline the case mouth and is not used to hold the bullet like a roll crimp.