Since I load all of my pistol ammo on a Dillon 550, I use a separate crimp die in the final station. For 45 ACP, a taper crimp die is appropriate. I back my seating die out so that it will not crimp, just seat the bullet. When using the taper crimp die, one can fine tune the amount of crimp depending on the bullet or cases. A taper crimp die is appropriate on most auto rounds that headspace on the case mouth such as the 9mm, 38 Super, 40 S&W, 10mm, etc. I use the Lee FCD on the 357 Sig since it has very little neck to hold the bullet tightly. Revolver rounds, such as the 38 Special, 357, 41, 44 Special &mag, and the 45 Colt are best served with a roll crimp die or even a FCD such as the one I use on the 41 Special. I've been reloading since 1967 and have used Redding, Lyman, C&H, Dillon, Hornady, RCBS, Lee, and even Herters equipment to my satisfaction. I'm currently using not one but two Lee APP presses for resizing and decapping lots of handgun brass and have loaded nearly 15,000 rounds of ammo since the pandemic started. I would suggest that one stock up on components if they can. Bob!!! :wink: