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Old 20th November 2017, 08:57 AM   #28
kronckew
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Join Date: Mar 2006
Location: Room 101, Glos. UK
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it looks like the new touch hole was fitted to the barrel and brazed into place with a high copper alloy, which is less destructive to the surrounding steel. obviously strong enough to survive this long. plug may have been loosely threaded & needed sealing in. as they say, necessity is the mother of invention.
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