I have two sleevers. The Elsie which I had done, and my first Brit-gun, an E.M. Reilly & Co I bought years ago from a for sale ad on here, with full disclosure that it was sleeved.

I know for a fact the Elsie was unusable before the sleeve, and I suspect the Reilly was as well. Both guns came cheaper than usable originals, but in both these cases the originals were not usable.

I'll acknowledge the hit in value, but I do not accept the premise that welldone sleevers are any less safe than original barrels. JMHO...Geo