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primer pocket stretch

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Old 04-15-2006, 08:45 PM
Silver Member
Join Date: Aug 2005
Location: White City, Saskatchewan
Posts: 218
primer pocket stretch

How do you know when the primer pocket is stretched too much for the case to be used anymore? Are we only worried about the primer staying where it is seated until the shell is fired? or is it a safety concern?
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Old 04-15-2006, 09:59 PM
Gold Member
Join Date: Mar 2004
Location: Spokane, WA
Posts: 521
Re: primer pocket stretch

6mm Shooter, If the new primer goes in easier than it did on original brass, then you've stretched your primer pocket and that brass should be discarded. If you are getting primer stretch, you are OVER pressure for that cartridge. Back off your load or change something to reduce pressure. Stretched primer pockets are not a sign of slight pressure, but rather big pressure overage.
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Old 04-16-2006, 10:40 AM
Platinum Member
Join Date: Apr 2003
Location: North Bend, Oregon
Posts: 1,211
Re: primer pocket stretch

They are stretched too much if the new primers fall out on their own. If they ever leak toss the brass. I have some really used up brass that still works fine but the primer pockets are very loose due to a bunch of abuse when they were new.
Build a man a fire and you heat him for a day.
Set him on fire and you heat him for life.

Only accurate rifles are interesting.

Gordy and Brady.
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