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Unread 05-26-2025, 05:12 PM   #12
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Craig Larter
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I have found the same with Parker 20ga bores. Most are a few thousands over .615 up to .620. And most/ many 0 frame 20's have a min under .030, most seem to be .022 to .025. It would be hard to find one with .030 wall.
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