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20th November 2017, 09:57 AM
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#22 |
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Member
Join Date: Mar 2006
Location: Room 101, Glos. UK
Posts: 4,259
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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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Threaded Mode