Cause for concern?

[Prudence]

Hi all...new to Smiths...at the range this weekend I noticed the following rub/wearing. Seems the crane is rubbing a lot. New 625JM with a couple hundred rounds through it. I did check the screw to ensure it is tight. Worry or let it go?



Thanks in advance.

Prudence

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[Trighap]

I'd be concerned ! It looks to my eye ( newbie that I am ) that the cylinder to bore gap is non-existent for at least some, if not most, of the chambers. I think that's what's causing the scrapping on the barrel. If this is a brand new gun, I'd call S&W and the dealer you bought the gun from. I think this gun needs to go back to S&W. I'll be interested to read what the more experienced guys have to say about this issue.

 

[smith revolver cop]

I would also be concerned. Not a normal sort of wear- front of cylinder should not contact the barrel/forcing cone!

 

[Vartarg]

Yep

Please keep us posted....

 

[s&wchad]

The mark on the frame below the barrel is perfectly normal, That's where the circular ledge on the front of the cylinder (gas ring?) limits forward cylinder travel by bracing against the frame. The front sideplate screw only stops the cylinder/yoke from falling off when open, it doesn't have anything to do with endshake.

The carbon fouling below and to the left is also normal and a result of firing. The back of the barrel looks a bit rough, but if it shoots fine and doesn't contact the cylinder when closed, it's fine.

 

[stevieboy]

Two questions. First, if you hold the gun up in front of a bright light and cycle it, do you see a consistent barrel-cylinder gap or does the gap close down to nonexistent on some chambers? Second, when firing the gun, does it bind?

I bought a 625JM used a couple of years ago and it bound horribly. A quick trip to a local smith solved the problem, for a few bucks he reset the barrel/cylinder gap at .006". With that the gun became one of my favorites.

 

[scooter123]

I have a 625JM that was test fired August 10, 2011, so it's quite recent. Mine has a polished area on the frame in the exact same spot as yours. However, there is zero drag when opening or closing the cylinder, so I suspect in my case it's a very near zero clearance condition and the yoke is "slapping" the frame when the gun is fired. If you see a highly polished appearance, feel not drag when opening or closing the cylinder, I wouldn't be concerned, what is actually taking place on my gun is a process call Burnishing. IF you are seeing scratches or galling, and feel some drag when opening and closing the cylinder, I think contacting S&W is in order.

BTW, mine also came in with the rear of the barrel slightly off square, enough that the B/C gap checked at 0.006 on the left and 0.0025 on the right. That was corrected and the B/C gap now checks at 0.005 inch on the right side. However, there is one small spot on the barrel that is burnishing the face of the cylinder. I could do a touch more stoning in this spot but I'll probably just leave it be, it's not causing any problems with barrel drag and I've run 300 rounds on it without any cleaning just to check for barrel drag on the cylinder.

 

[Prudence]

First, thank you for all the replies and information. Leaning towards taking some measurements when I get moment. It does not bind when fired, bit is harder to open than my other models. I will try and keep folks posted if it ends up making a trip back for maintenance.
-Prudence

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