A separate taper crimp die is more commonly recommended...all mine are separate TC dies. I am not a fan of the Lee FCD for pistol rounds using cast bullets because they have a tendency to resize the bullet (smaller) which can/frequently lead to leading. Some people have taken the FCD and removed the carbide ring that sizes the loaded round, leaving only the taper crimp function in the die; not sure how hard that is to do. My TC dies are RCBS, Dillon, Lyman IIRC. The function of the TC die is to remove the bell put on the case for bullet seating purposes; it is not intended to actually crimp the case mouth into the bullet like for revolver cartridges. For pistol rounds, it is the case neck tension that holds the bullet in place, not the crimp. You may know all this...but just in case you don't.

One other point, I don't believe anyone has mentioned......the 45 acp headspaces on the cartridge mouth, unlike a revolver cartridge that uses the rim. So a proper taper crimp is very important, if you crimp the 45 acp like a revolver cartridge it will cause misfires due to the loaded round being pushed forward upon firing pin strike.

I have always found it better to seat and crimp in separate steps, allows more control on crimping and more accurate seating depth.

Gunner

ps
Rob Leahy is 100% correct the 41 Mag is awesome, everyone should own several : )

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41 Mags rule, Baers rock!