Factory or me?

[Nomad8961]

I'm with long gun 505. No way a stainless cleaning rod did that.

 

[Rflshootr]

I've seen brass cleaning jags ding crowns. You don't think a stainless rod with a sharp edge could cause damage? Especially without a bore guide? I've had a piece of bullet jacket run a line down a bore with the next shot and leave a scrape mark in the groove of the rifling. Stainless barrels aren't as tough as you perceive them to be. It doesn't take much to screw them up.

 

[Nomad8961]

Yes it could no doubt, I'd suspect most damage from a stainless rod is on the lands of a barrel also probably the leade, freebore and neck could get damaged from the "lip" of where a jag and the rod meet. The picture that the OP posted does not look like a land, but more of a groove cutter mark a dull cutter "drug" a metal chip. It's from a dull cutter, I'd bet a good rifle of mine on it

 

[unclecroc]

I believe what I'm looking at is galling from the rifling process. If it shoots well continue as normal.

 

[Rflshootr]

Let's just suppose you're right. Let's say that the button galled up and made that mark. Explain to me why it's only in that very short section and nowhere else. Once 2 pieces of metal start to gall, it doesn't get better as you go along, it only gets worse. Also, if you look closely, you'll see areas at the edge of that mark where metal is raised above the land surface. Do you think it would still be there after almost 300 rounds if it was there originally? Why is there no carbon or fouling in that mark? I think there is more to the story then what the original poster is telling. But that's just my WAG.

 

[Taj]

Bore scopes can drive you crazy. I've seen bores that look like they were cut with a chain saw file, but shoot okay. When someone gets a new bore scope, they suddenly get really diligent in their barrel cleaning regime. I think it's a conspiracy between the folks that make bore solvents and the folks that make bore scopes.

 

[unclecroc]

Let's just suppose you're right. Let's say that the button galled up and made that mark. Explain to me why it's only in that very short section and nowhere else. Once 2 pieces of metal start to gall, it doesn't get better as you go along, it only gets worse. Also, if you look closely, you'll see areas at the edge of that mark where metal is raised above the land surface. Do you think it would still be there after almost 300 rounds if it was there originally? Why is there no carbon or fouling in that mark? I think there is more to the story then what the original poster is telling.

My best guess is a chip got bound between the bar and the id of the bore. Possibly the last inch or so from the looks of it in the stroke? If it wasn't done in the machining process then idk how the heck a joe blow like me could put a pecker track in there like that with any tool I've got laying around.

 

[bdlesh]

Those are obviously tuning marks to zero the bullet flight pattern.....or factory hiccups

 

[Rflshootr]

Those are obviously tuning marks to zero the bullet flight pattern.....or factory hiccups

Yep! That must be it! Or it's a weld bead to close a hole in the barrel material.

 

[Fullbore92]

So, would you like to elaborate on what you may have done to think you may have caused it?

Nothing off the top of my head makes me think there was anything particular that I did to cause it. I'm only curious if it's possible that there's something I did to cause it, what could that have been? If that makes sense.

 

[Fullbore92]

Regular cleaning will not do this. No matter what you are using (unless you used a hardened tool steel solid rod and a chipping hammer to drive it. My son-in-law has a .22LR that was so fouled I couldn't run a rod down the barrel. I looked and it was layered with lead deposits. I took a steel rod amd actually hammered it down the barrel to scrape the lead out. It took about 6 passes with chunks of lead coming out each pass. Finally got it cleaned after days of working it. Barrel looked rough but fine after all that torture. I ran JB bore paste down it about 50 times, and smoothed it right out. Shoots OK now.

The only way this could have been "you" is if you had foreign material like a loose SS chip in the bore and you fired a round down the barrel.

This is why I don't recommend a bore scope to the everyday person. If a rifle shoots well, you should never look down a barrel. This is all you are going to think about now.

Ignorance is bliss.

I agree. I've always been told to stay away from scopes for the same reason you stated. Thankfully I'm not worried about the mark. I'm just a curious person and wanted to hear others opinions about it.