OK, stupid question: What makes the Lee FCD essential as opposed to the taper crimp die that comes with the RCBS die set? Is it just that it does a better job of sizing the bottom of the case or just that it is a dedicated crimp die for the 4th stage or is there some other magic at work?

I have an FCD for 10mm, but only use it in conjunction with a Bulge Buster to size before loading on my SDB and Dillon's taper crimp die works just fine.


'Four legs good, two legs baaaad."
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"Jimmy, some of it's magic,
Some of it's tragic,
But I had a good life all the way."
(Jimmy Buffett)

SotG