What is this line inside my barrel?

41 Colt

41 Colt

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Got a Henry Golden Boy yesterday. Taking it out tonight so I cleaned it. I noticed this weird line going down the length of the barrel inside. It is straight, does not follow the rifling. It covers the lands & the grooves.

:confused:

barrel.jpg


This was the best picture I could get, sorry.
 
Have you wiped out the barrel, to make sure it isn't something superficial?
It is really hard to tell, but it does look like a crack.
 
tiriaq said:
Have you wiped out the barrel, to make sure it isn't something superficial?
It is really hard to tell, but it does look like a crack.
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I cleaned it. Patches, jag, brozne brush down the barrel.

A crack?? It's brand new! :eek:
 
I've seen this before in other rifles,and always new ones.
Shoot the hell out of it,must just be a drag mark from tooling
 
Gibbs505 said:
I have seen that mark from a shaddow. Which end did you take the photo from?
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Muzzle, with the bore light shoved in the chamber, and it doesn't seem to move, so I'm not sure what could cause a shadow, but I'll take another look and try to get better photos.

(Ronin), that's interesting. I decided to still shoot it tonight, and it shot just as well as my Winchester.
 
if you are seriously concerned take your gun to a smith with a decent borescope to do a close up inspection. Most likely a drag from tooling which may iron out from use.
 
Just a general comment that I believe that most .22 rim fire barrels are manufactured from a milder steel than center fire barrels that are used with higher pressure rounds... I think that means they may be more prone to damage from cleaning rods?? I had that thought stored away in my mind for a while ... could very well be wrong though...however if I am correct you should use reasonable caution with any sort of bore abrasive
 
A rifling button would not leave an irregular longitudinal mark.
If the mark does not clean out, it is an irregularity or flaw in the bore. Whether it is a flaw in the steel or a scratch left by tooling, it is a defect.
If you decide to keep the rifle, that is your choice.
 
abrasive

AP said:
Just a general comment that I believe that most .22 rim fire barrels are manufactured from a milder steel than center fire barrels that are used with higher pressure rounds... I think that means they may be more prone to damage from cleaning rods?? I had that thought stored away in my mind for a while ... could very well be wrong though...however if I am correct you should use reasonable caution with any sort of bore abrasive
Click to expand...

I agree - caution with abrasives - with one exception - J B bore paste - It will not harm any bore - ever - was dubious about all the claims and all the positive opinions from the ohio bench ass'c and camp perry shooters I talked to - Tested the stuff myself - a lot of sweat went into the test - really excessive J B use (for several years) - the rifle just kept getting more accurate - Use it on all my center fires - (22 rimfire bores dont benefit from any kind of bore cleaning [except a dry mop] - only the chambers require regular cleaning to get rid of the accuraccy destroying lead ring) I do however polish a new .22 rimfire bore with the red ultra fine J B - only once on a new rifle :eek:
 
M_A_T_T said:
Muzzle, with the bore light shoved in the chamber, and it doesn't seem to move, so I'm not sure what could cause a shadow, but I'll take another look and try to get better photos.

(Ronin), that's interesting. I decided to still shoot it tonight, and it shot just as well as my Winchester.
Click to expand...

OK, I have seen similar marks from shadows from ejectors and the like. Not likely with a bore light inserted though.

As others have said, get it looked at with a proper bore scope.
 
Here's another idea, One method of verifying the straightness of a barrell was to look at a well lit vertical edge object thru the barrell and the vertical line could be seen as a shadow and if the barrell wasn't straight then you see two or more line shadows and where the shadows ended was the apex of the bend and the barrell could be tweeked until the shadow was a single line and then the barrell bore was straight in that plane other planes would then be checked and the operation repeated. Sharp's riflebarrell makers could do this in minutes. Now what you see using a bore light in the chamber may be nothing more than the shadow of a minor mark where the chamber meets the barrell diameter and because it is so short the shadow only goes part way up the bore. Try an chambering a fresh round you may even see the mark after unchambering. This mark is so tiny it's probably why it disappears so quickly with use.
 
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