Gunsmithing I have a borescope and need some help

[TimK]

I've borrowed a good borescope and used it last night to look down the barrel of my new-to-me 700VS in .308 with stock factory barrel. The gun is used, but maybe never fired.

I ran a wet patch down it, then two dry. The second came out absolutely clean. Did it again, same result. Then I looked with the scope, and I saw all kinds of stuff in the grooves. Never having looked through a borescope before, I can't evaluate what I'm seeing, meaning I can't tell if the junk is on the surface of the barrel or imperfections in the barrel.

I cleaned it again, this time taking a few swipes with a brush and then using Sweets. I never saw any traces of copper fouling, and the clean up patches again came through absolutely clean.

I checked again with the scope, and the barrel appeared to be unchanged. What the heck am I seeing in there?

 

[krlemas]

Re: I have a borescope and need some help

Have you shot it yet if so how does it shoot?

 

[BOLTRIPPER]

Re: I have a borescope and need some help

typical stock barrel....to include tooling chatter marks and inclusions.....

do some isso on a patch ,,,this will polish out and perceived imperfections and smooth out the linear striations...

some barrels exhibit the makings of a potato field but will shoot bungholes as long as there is a plumb crown....go figure

this endeavor is like reading tea leaves....

 

[BOLTRIPPER]

Re: I have a borescope and need some help

find and examine a barrel that got fire cracking and land loss....maybe a .300wm or some other "overbore" tube, there is an education on how the throat burn out leads to accuracy loss.

 

[The Mechanic]

Re: I have a borescope and need some help

Welcome to factory production barrels. Long story short it is normal go shoot it.
hope this works. Top video
http://www.6mmbr.com/videos.html
[video:google]http://www.6mmbr.com/f/Lilja_BoreScope_VID.wmv[/video]
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[Hateca]

Re: I have a borescope and need some help

A borescope is useless unless you know what you’re looking at, as you have found out.

After many a year looking at lots of barrels the only real way you will know if a barrel shoots is to shoot it, just as Boltripper has indicated.

A borescope causes more harm then good to the inexperienced.

Every barrel will foul and you will never get it all out contrary to what anyone else may say.

 

[TimK]

Re: I have a borescope and need some help

Haven't shot it yet, but tomorrow it the day if the weather here holds out. Ought to be interesting. I honestly wish I hadn't looked.

That video was pretty cool. If I have time, I'll try to take some stills of the borescope and post them up.