Googled Bangor Punta S&W. In this era of Smiths, the article mentioned many changes in production. We know the changes. One thing mentioned, may be going on today, is QC. It has been posted here about tight 22cal cylinders. My K-22, Mod 17-3 was one of them, of the era. A little extra push to get the cartridges in the charge holes. Once fired was another thing to eject them. Took it to a true gunsmith. Upon looking at it, he drop the cylinder ream in the holes. There was a good 1/4 of the ream sticking out. Reaming and polishing the charge holes made all the difference. Didn't seem that the cartridges were tight or real loose. The fired brass came out if with a little help with the ejector rod, sometimes fell out. I don't know if this was a QC issue, or was to be that tight. Works and functions fine.