Smith & Wesson Forum

Go Back   Smith & Wesson Forum > >


Reply
 
Thread Tools Display Modes
  #1  
Old 08-04-2017, 08:17 PM
SW CQB 45's Avatar
SW CQB 45 SW CQB 45 is offline
Member
K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact  
Join Date: Feb 2002
Location: Victoria, Texas
Posts: 2,947
Likes: 87
Liked 501 Times in 231 Posts
Default K frame barrel and cylinder contact

I purchased and took delivery of a very clean Model 10-8 3"

it appears to be hardly shot.

upon closing the cylinder, I heard a funny clanking metal to metal noise.

I soon discovered the edge of the cylinder is making contact with the edge of the barrel when closing the cylinder. the contact has peened the edge of the barrel.

what is the proper fix and is their a quick fix (shim) to drive the cylinder rearward?

I want to shoot this piece and barrel to cylinder gap might be too tight once I start shooting as it builds up some residue.
Attached Thumbnails
K frame barrel and cylinder contact-fullsizerender-3-jpg   K frame barrel and cylinder contact-fullsizerender-4-jpg  
__________________
if you're gonna be a bear...
Reply With Quote
  #2  
Old 08-04-2017, 09:41 PM
Targets Guy's Avatar
Targets Guy Targets Guy is online now
US Veteran
K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact  
Join Date: Jul 2013
Location: Southwest Iowa
Posts: 6,115
Likes: 1,150
Liked 9,233 Times in 2,798 Posts
Default

Not a gunsmith but I don't think they should touch. An expert will be along shortly.
__________________
Mike
S&WCA #3065
Reply With Quote
  #3  
Old 08-04-2017, 09:49 PM
OKFC05 OKFC05 is offline
Member
K frame barrel and cylinder contact K frame barrel and cylinder contact  
Join Date: Aug 2007
Location: Oklahoma
Posts: 7,220
Likes: 1,779
Liked 3,375 Times in 1,549 Posts
Default

You can use ordinary feeler gauges to accurately measure the problem. First, hold the cylinder rearward as firmly as you can and measure the gap with the feeler gauges. Typically should be .004" to .012".
You have already said it is zero when the cylinder is forward.
The difference is cylinder play, due to wear between the yoke and cylinder.
A gunsmith can either stretch the yoke or add shims to reduce this play to around .001", which will make the gap about what you measured when you held it rearward.
For a proper shim installation, the interface should be trimmed square before final shim selection. Brownells sells the tool and shims.
In the off chance there is no play but somebody has improperly installed a barrel, then the installation must be completed correctly.
__________________
Science plus Art

Last edited by OKFC05; 08-04-2017 at 09:55 PM.
Reply With Quote
The Following 2 Users Like Post:
  #4  
Old 08-04-2017, 10:04 PM
SW CQB 45's Avatar
SW CQB 45 SW CQB 45 is offline
Member
K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact  
Join Date: Feb 2002
Location: Victoria, Texas
Posts: 2,947
Likes: 87
Liked 501 Times in 231 Posts
Default

I am still in the process of moving. All my **** is still in boxes or storage.

A piece of copy paper will slip in with the cylinder at rest. I do feel resistance.

I folded the copy paper and pushed the cylinder rearward and the thickness of two will not go.

I did a google search and copy paper is about .004"

the cylinder does show scaring that its in contact with the barrel when it rotates.
__________________
if you're gonna be a bear...

Last edited by SW CQB 45; 08-04-2017 at 10:06 PM.
Reply With Quote
  #5  
Old 08-04-2017, 10:15 PM
OKFC05 OKFC05 is offline
Member
K frame barrel and cylinder contact K frame barrel and cylinder contact  
Join Date: Aug 2007
Location: Oklahoma
Posts: 7,220
Likes: 1,779
Liked 3,375 Times in 1,549 Posts
Default

LSG, Mfg|Gun Parts|Warranty|Gunsmithing


Frank can fix your revolver; he's in Comanche, TX.
He was a S&W warranty station for 37 years until S&W closed all warranty stations Dec 2016.
__________________
Science plus Art
Reply With Quote
  #6  
Old 08-04-2017, 10:33 PM
SW CQB 45's Avatar
SW CQB 45 SW CQB 45 is offline
Member
K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact  
Join Date: Feb 2002
Location: Victoria, Texas
Posts: 2,947
Likes: 87
Liked 501 Times in 231 Posts
Default

Quote:
Originally Posted by OKFC05 View Post
LSG, Mfg|Gun Parts|Warranty|Gunsmithing


Frank can fix your revolver; he's in Comanche, TX.
He was a S&W warranty station for 37 years until S&W closed all warranty stations Dec 2016.
Cool. does he do action jobs?

not looking for anything other that smoothing of the action.
__________________
if you're gonna be a bear...
Reply With Quote
  #7  
Old 08-04-2017, 10:44 PM
OKFC05 OKFC05 is offline
Member
K frame barrel and cylinder contact K frame barrel and cylinder contact  
Join Date: Aug 2007
Location: Oklahoma
Posts: 7,220
Likes: 1,779
Liked 3,375 Times in 1,549 Posts
Default

Quote:
Originally Posted by SW CQB 45 View Post
Cool. does he do action jobs?

not looking for anything other that smoothing of the action.
Last time I asked (couple of yrs) he did
__________________
Science plus Art
Reply With Quote
  #8  
Old 08-04-2017, 10:48 PM
SW CQB 45's Avatar
SW CQB 45 SW CQB 45 is offline
Member
K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact  
Join Date: Feb 2002
Location: Victoria, Texas
Posts: 2,947
Likes: 87
Liked 501 Times in 231 Posts
Default

cool, I will call him tomorrow or Monday.

thanks
__________________
if you're gonna be a bear...
Reply With Quote
  #9  
Old 08-06-2017, 07:22 PM
mscampbell2734 mscampbell2734 is offline
Member
K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact  
Join Date: Jan 2012
Posts: 245
Likes: 1
Liked 104 Times in 62 Posts
Default

If you have .004-.008 gap when the cylinder is fully closed but contact when opening/closing then I'd look real hard at a sprung yoke.

Pull the hammer part way back and rotate the cylinder. If everything looks square then the cylinder is being supported by the cylinder pin but makes contact other wise you could have a gun some idiot sat in front of a TV snapping the cylinder closed.
Reply With Quote
  #10  
Old 08-06-2017, 07:34 PM
Old_Cop Old_Cop is offline
SWCA Member
K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact K frame barrel and cylinder contact  
Join Date: Jan 2011
Location: Crawford County PA
Posts: 310
Likes: 287
Liked 415 Times in 166 Posts
Default

You might check the yoke retention screw, to see if it is tight. If a 10-8 has the screw with a spring and plunger, check the spring.
__________________
Made it, Ma! Top of the world!
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
2" K-Frame Barrel and Cylinder .38 spl..$ change billwill Accessories/Misc - For Sale or Trade 1 08-26-2014 11:11 AM
610 cylinder & barrel swap with any N-frame? nuubee S&W-Smithing 6 05-08-2013 03:17 PM
Forcing Cone/Cylinder Contact Opening/Closing w0lfattack S&W-Smithing 20 01-25-2013 09:46 AM
Model 17 cylinder barrel contact question Texan S&W-Smithing 4 03-14-2010 12:43 PM
17-4: contact between cone and cylinder wyguy S&W-Smithing 4 04-27-2009 01:12 PM

Powered by vBadvanced CMPS v3.2.3
smith-wessonforum.com tested by Norton Internet Security smith-wessonforum.com tested by McAfee Internet Security

All times are GMT -4. The time now is 05:20 PM.


S-W Forum, LLC 2000-2015
Smith-WessonForum.com is not affiliated with Smith & Wesson Holding Corporation (NASDAQ Global Select: SWHC)