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Old June 30, 2013, 11:42 PM   #10
Senior Member
Join Date: April 28, 2008
Posts: 557
I slugged the barrel and found significant constriction where the barrel screws into the frame. The bore (as best I can measure) drops down to .4447".
The slug I pushed through the bore met great resistance at the frame. It came out with lands measuring .4443" in a .451 bore. That, my friends, sounds ugly.

A call to Ruger is in order.
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