I've got this neat little revolver that I bought a few months ago. It's an old S&W Regulation Police in .32 S&W Long. It's a slender little 4" barrel I-frame, made sometime in the 1930's as near as I can tell.
It's in great condition, looks mechanically perfect and the finish looks excellent except for a blotchy spot on the frame, no big deal. I didn't measure the cylinder gap because eyeballing it, it looked to be just right. When shooting it, I noticed the occasional hitch in the double-action pull. I soon realized that it was only on a couple chambers. At home I checked it over carefully and see that sure enough, two chambers on one side of the cylinder rub very slightly on the barrel. Very odd. I couldn't see any sign of damage, or anything bent in any way.
I then got out my calipers and carefully measured the cylinder overall length at each chamber. Sure enough, the cylinder is .002" longer on that side. Has anyone seen this sort of thing before? It sure looks like it was made that way, because this little gun doesn't look like it's ever been fired much at all. End-shake is very minimal. I haven't checked to see if a K-frame bearing shim will fit this gun, but even if it would, it would have to be a very thin one. I suppose the best thing would be to have a gunsmith chuck the cylinder up on a lathe and carefully true it up.
Any of you revolver-smiths worked on this sort of thing before?