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Old 14th September 2017, 03:10 PM   #9
Will M
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Join Date: Mar 2012
Location: In the wee woods north of Napanee Ontario
Posts: 128

Only reason to line the bore is they didn't trust the brass casting.
No period cannons were made of brass with iron/steel bore liners.
I would say a relatively modern piece that has corroded.
I built a similar one using an unknown iron casting and having a seamless stainless steel tube hydraulically press fit into the bore.
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