"After seeing several cast bullet manufacturers saying to not use the FCD on cast bullets I am going to try some with just a taper crimp and see what happens."
The semi-auto handgun FCD does apply a taper crimp. Only the revolver FCDs utilize a roll crimp.
Now when Moderator Bob was banging on me earlier in the thread,
What are "over spec cast bullets"
Take Care
Bob
when I used the term "over-spec" aka "oversized," I tried to explain, but Andy Lee did a fine job in post #178 above:
"If a bullet is so oversize that it expands the OD of the brass cartridge, to excess of the SAAMI Maximum dimension, the neck diameter of the case will be sized, which in turn will reduce the bullet diameter to the largest allowable, so that it will fit in a standard SAAMI Maximum Chamber."
That is a "specification." SAAMI specification.
Bottom line, it is no wonder that the large majority of poll participants use the handgun FCD. It promotes uniformity and function, and that is a good thing.