Internally lined barrels have the thin, original outer barrel remaining. If too thin, such as the thickness of stationery paper, blisters can form just from light carding as in refinishing barrels.
The liner was not rippled. To the extent that hoop strength is derived from the combination of the liner and remaining original barrel, strength could be adversely affected by a too thin outer shell.
Many people were pleased by their Teague liners. This one was unusual and Teague made good on it, though I don't know the details. Teague no longer has a US representative and I have heard nothing recently about Teague barrel liners.
As always, and this is directed to those relatively new to old guns, when a person is interested in an older gun, barrels must be carefully considered. We frequently see on this website the results of uninformed, misinformed or careless purchases.
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