So I purchased a model 66-2 last year unfired in the box with all of the original papers. However, when I went to shoot the gun, the cylinder wouldn't index. So I had the gun worked on by a well known smith in my area. When I got the gun back I noticed some strange marks on the rear cylinder face, but I can't recall if they were there when I bought it or not. Almost look like dremel marks or something. Can anyone tell me if these 'machine marks' look normal? Any input would be much appreciated as I'm a bit ocd about marks on my guns lol

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You mean that the "gunsmith" did not tell you what he did nor show you the repaired or "worked on" area or areas ??
You just paid him, picked up your revolver and left?
Boy does this sound fishy to me!

He told me and showed me that he replaced the cylinder stop. I looked the gun over before I left the shop, but didn't notice the marks on the cylinder until I took it to the range as they are not noticeable unless looked at in the right light.

I'm not sure what marks you're referring too. I can't tell anything is wrong by the picture.

My 66-2 has the same turn marks. It's not polished smooth.

It also looks like you have the "F" that's supposed to be stamped there as well, so no metal was removed.

Thank you all for your responses! I kind of figured the marks were factory, because like you said, the F is still clearly there. Thanks for the reassurance!

Glad everything worked out so you can go out and shoot that fine 66-2!

Just curious about why the cylinder wouldn't index on a NIB revolver, and that required replacement of the cylinder stop. I guess anything's possible, but it's surprising that the factory would let one go that way, especially given the quality of the 66-2 era guns.

Anybody care to venture a guess without me taking this over to the Smithing section?

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Thank you! I can't wait to take it out and shoot it some more! It was really surprising to me too. I think I recall reading that some other 66 models had the same issue, but I'm not sure why. Basically what would happen was while shooting in double action, it would bind up and the hammer would only come back about half way. Very strange. However it shoots great now

Welcome to the FORUM! Glad your Smith functions O.K. now. Fortunately, I have never had any repair work done on anything. Wouldn't know where to take something. Guess that is a good thing though. Bob

I was wondering the same thing. If it didn't index, that sounds like a hand issue, but you never know without your own exam. The good thing is the gun works properly now.

However, keep an eye on it. I would be hesitant to take a revolver to any local gunsmith. Colt or S&W, because most gunsmiths aren't actually master pistolsmiths, which is what one should be if working on them. Most are just 'advanced assemblers' and probably not trained on revolvers. So if I need work, it goes to a master via mail.

Thanks Bob! I will definitely keep an eye on it, but thankfully since the work was done it has not had anymore issues. The work was done by a gentleman named Doug Jones, the inventor of Acc-u-rail. Hes a master 1911 smith and also does work on revolvers. I'm very pleased with his work. I just happened to notice the marks on the cylinder and found it looked odd as my other Smiths look a little more "clean" in that area, but the gun more than likely came that way and I just didn't notice. Anyway, thanks everyone for your replies! This forum is great, glad to be here