Go Back > Forums > Small Caliber Discussion Board

Thread Tools Display Modes
Old 11-14-2019, 02:03 PM
360Sideways 360Sideways is offline
Join Date: Jan 2012
Location: Humphreys Co. TN
Posts: 97
Unhappy What's this in my 20vt bore?

It's been a long time since I've posted here, but I'm hoping you guys can help me out...

After some pretty big life changes, and my rifles sitting for a few years, things have started to settle down a little. I pulled out my ringer 38 Cooper 20VT and ran a patch through it.

Apparently I didn't clean it after the last time I shot it, which would be the first time in my life that I've done this kind of BS...

So after sitting for 4-5 years, I cleaned it, and noticed I had a sticky spot I couldn't get out very easily. Before I went crazy, I ordered a borescope off Amazon (same one 358Scott posted about, Thanks BTW). Below is what I found...

And finally without the mirror... (ignore the patch fiber sticking up in the picture)

So, having never had a borescope before, I'm hoping to glean some of the collective knowledge around here.

What am I looking at? In the last picture without the mirror, it really looks to me like copper, but I've put multiple rounds of the nastiest copper solvent I've got through it, and gone back to look at the same places afterwards, and can see no change at all.

I'm thinking I ruined the best shooting barrel I've ever had
Reply With Quote
Old 11-14-2019, 02:09 PM
DAA DAA is offline
Senior Member
Join Date: Oct 2006
Location: West Bountiful, Utah
Posts: 728

I doubt it's ruined.

I'm not sure exactly what you are looking at, either. But I'd bet some short strokes with JB will make whatever it is disappear.

Reply With Quote
Old 11-14-2019, 02:39 PM
Teancum1 Teancum1 is offline
Supporting Member
Join Date: Jun 2013
Posts: 115
Default surface deposit

I agree with DAA. I don't think it looks like corrosion. Looks more like a surface deposit. Most organics will include impurities that can coalesce and plate out over time - especially if they had something added like powder residue. If a long soak with a solvent like Hoppes #9 hasn't softened it, then I'd probably go the JB route, but I suspect that the underlying metal is fine.
Reply With Quote
Old 11-14-2019, 02:39 PM
Bayou City Boy Bayou City Boy is offline
Supporting Member
Join Date: Sep 2006
Location: Tomball/Klein, Texas
Posts: 3,367

Nothing else in the world can cause you to worry about a perfectly good shooting rifle more than a bore scope can..........

Still, they are a very helpful tool. Like DAA stated, some careful judicious cleaning in that area will likely solve the "problem".

Yo no creo en santos que orinan.

Be Proactively Safe:

Yesterday I did something that I normally don’t do. I picked up a hitch hiker. After he got into my car, he said to me, “I’m surprised that you picked me up. I could be a serial killer.”

I replied, “I'm not worried because what are the odds of there being two serial killers in the same car at the same time?”

He suddenly got very quiet, and he got out of my car at the next stop light.

Women and cats will do as they please. Men and dogs should relax and just get used to the idea.

Last year I joined a support group for procrastinators. We haven’t met yet.

Why do I have to press one for English when you’re just going to transfer me to someone I can't understand anyway?



Last edited by Bayou City Boy; 11-14-2019 at 02:42 PM.
Reply With Quote
Old 11-14-2019, 02:40 PM
jimreed1948 jimreed1948 is offline
Join Date: Jul 2018
Location: Houston, Texas
Posts: 80

As DAA mentioned, I would use some type of quality bore cleaner as well. By looking at the photo without the mirror, some of it appears to be loose.
Maybe CLR would take it out and then come back and clean as usual to get the CLR out. It doesn't look pitted.
Reply With Quote
Old 11-14-2019, 03:05 PM
Hog Patrol Hog Patrol is offline
Senior Member
Join Date: Sep 2011
Location: DE
Posts: 1,323

Could be copper. Try some JB bore paste. If it's a stainless barrel, it could still be corrosion. Having said that, if it still shoots, fuggeddaboutit.
Define the mission. Buy the hardware/software to suit.
Reply With Quote
Old 11-14-2019, 03:34 PM
Bill K Bill K is offline
Senior Member
Join Date: Aug 2012
Location: N.E. Commie Kalifornia
Posts: 4,440

After a few years sitting, as you say, it could be one small spot that has corroded or a small area with some rust setting in.
A good bore cleaning, working some JB in that area lightly should work it off or out, the best that it can. Follow it up with some cleaning solutions and then see how it looks with your bore scope. One spot like that should not do much to effect your rifles accuracy. Bill K
Reply With Quote
Old 11-14-2019, 06:16 PM
Nor Cal Mikie Nor Cal Mikie is offline
Supporting Member
Join Date: Jul 2010
Location: 125 miles North of San Francisco.
Posts: 969

That's what you get for looking with a bore scope!!
Shoot that sucker and see what your target tells you AND, hide that bore scope.
Reply With Quote
Old 11-14-2019, 06:34 PM
coyotespotter coyotespotter is offline
Senior Member
Join Date: Aug 2014
Posts: 184

Do you use a coated cleaning rod, has it flaked off some coating?
Reply With Quote
Old 11-14-2019, 07:56 PM
37L1 37L1 is offline
Junior Member
Join Date: Dec 2014
Posts: 3

Looks like minor pitting, not going to hurt your accuracy one bit.

Don't look in your other barrels, you'll find more stuff.
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT. The time now is 08:29 AM.

Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.