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Old 20th November 2017, 07:57 AM   #28
kronckew's Avatar
Join Date: Mar 2006
Location: CSA Consulate, Rm. 101, Glos. UK: p.s. - Real Dogs Have Feathering.
Posts: 2,716

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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