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Old June 21, 2011, 06:14 AM   #7
mehavey
Senior Member
 
Join Date: June 17, 2010
Location: Virginia
Posts: 3,061
Protruding primers after firing a low-pressure (minimal) load is a classic sign of excessive headspace. They then get hammered flat by case stretch.
It's easily solved by adjusting the amount of sizing to just fit the chamber dimensions.
(Thereby also dramatically extending brass life.)

Last edited by mehavey; June 21, 2011 at 07:39 AM.
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