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Old December 24, 2012, 04:17 AM   #16
Sport45
Senior Member
 
Join Date: May 25, 1999
Location: Too close to Houston
Posts: 4,196
When the ram reaches the top of its stroke, is the shell holder contacting (or within .003" of contacting) the base of the sizing die?

If not, you are probably not full length sizing.

To see, take a fired case and paint the neck and shoulder completely with a magic marker. Full length size it and see if you are even touching the shoulder with the die.

The cannelure gives the neck somewhere to go when it's crimped. Without the cannelure you are deforming the bullet or pushing the neck down. Neither are good.
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Last edited by Sport45; December 24, 2012 at 04:31 AM.
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