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Collapsed Shoulder
#4
rasp65 Wrote:Thanks LR good to be back. Nothing had changed in any of my settings. I miked the expander button and it was correct. Normally my sizing die has pretty good contact with the shell holder. But in this case i just ran the necks to get uniform size for turning. I pulled the bullets on the ones that were completely collapsed and found long scratches on the contact surfaces. I can fit the cases into my case guage so I am considering fireing them to blow them back out. Just have never experienced anything like this before.

R65:

Sorry -- I guess this happened when you were seating the bullets? In that case most likely it is because the sizing die is real tight on the necks and if you didn't expand them, the force of the bullet seating crushed the shoulders.

Are you sure you are using the Grendel seating die? Not sure what your set up is but I use a Redding T-7 Turret and right next to my Grendel dies are 6 BR and 6 AR so in my case it is possible for me to try and seat a bullet into a Grendel case using a 6 BR or 6 AR die.

Anyway, might as well remove your sizing and seating dies and clean them. Could be something stuck inside of them causing the problem.

LR1955
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Messages In This Thread
Collapsed Shoulder - by rasp65 - 03-13-2011, 07:46 PM
Collapsed Shoulder - by LR1955 - 03-13-2011, 10:08 PM
Collapsed Shoulder - by rasp65 - 03-13-2011, 10:17 PM
Collapsed Shoulder - by LR1955 - 03-13-2011, 10:47 PM
Collapsed Shoulder - by rasp65 - 03-14-2011, 12:02 AM
Collapsed Shoulder - by LR1955 - 03-14-2011, 12:53 AM

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