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Old December 29, 2012, 09:44 AM   #11
Bart B.
Senior Member
Join Date: February 15, 2009
Posts: 6,318
Roper, good link to Al's site, but I don't find anything about where around the pressure ring is the expansion the most nor where it's at when fired relative to the chamber. Please tell me where it's at if it's there.
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