Originally Posted by
jrcii
I read on some forms that in order to get the crimp right the brass has to be trimmed to “exactly the same length”.
Complete nonsense. Uniformity is always desirable, but that statement is nuts. With the LEE FCD, the trim lengths specifically need not be the same. That's LEE's idea behind the die. I started using it years back because I never trimmed any .223 brass.
Now with a Taper crimp die, length variations will change the amount of crimp. I'd guess my trim variances to be +/- .002" because the Giraud trimmer indexes off the shoulder, and I shoot mixed brass without annealing.
If you're trimming back the really long necks and getting remotely consistent length, you're fine.
Last edited by markm; 10-05-22 at 12:51.
"What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v
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