Barrel Damage?

[Professor Doolittle]

Hello good people, sorry but after looking again at the pics blown up as much as I can it really looks like something may have been dropped down the barrel and then tried to tap it out maybe the wrong way first and maybe back out. Also that camera takes an awesome pictures.

But isn't the bore diameter consistent all the way through the barrel? Why would something stop at this spot? My first thought was a chamber bore guide for a caliber way below this one allowing the bore guide to go into the bore itself instead of stopping in the chamber. Then it was rotated to lock in. Mine rotates then locks against the bolt notch.

 

[greenejc]

Looking at a friends barrel with the Teslong bore scope this is what we found in the stainless steel barrel.

Does anyone know what caused this? They kind of look like pressure rings with material erosion? Just a guess on my part.

Any help would be appreciated.

Thanks in advance,

Frank.
View attachment 294961View attachment 294962

 

[greenejc]

Looking at a friends barrel with the Teslong bore scope this is what we found in the stainless steel barrel.

Does anyone know what caused this? They kind of look like pressure rings with material erosion? Just a guess on my part.

Any help would be appreciated.

Thanks in advance,

Frank.
View attachment 294961View attachment 294962

 

[greenejc]

Looks like it was done by something after barrel manufacture. I can see scarring on the lands. Somebody stuck something really hard and rough and then twisted it.

 

[284 Win.]

Looks like 26Reload could be correct.
If a bullet lodged in there, as it was pounded out the rod has slipped and hit the bore several times.
This is why I have numerous solid brass round bar in various sizes from 17 cal through 50 cal. It will not marr the barrel even if it whacks it.
Was this a new purchase by your buddy?

Cheers.

I have seen bullet suck in barrels and there is no pounding them out.

 

[jessegibson1978]

Tooling marks? I'm no machinist just guessing….

I have done tool and die work for over 20 years. Yes that's what it looks like a chip got hung up on the broach.

 

[MagnumManiac]

I have seen bullet suck in barrels and there is no pounding them out.

So have I, had to cut out quite a few with a boring bar. Silly people firing bullets with a little or no powder.

Cheers.

 

[Firewurx]

That's from shoving something into the barrel that shouldn't be in there, IMO. It appears to be physical damage to me. I can't possibly see that gun holding 1 MOA anymore. Prob shot good before he started trying to clean it. Maybe try some JB or just re-barrel.

 

[Firewurx]

Hello good people, sorry but after looking again at the pics blown up as much as I can it really looks like something may have been dropped down the barrel and then tried to tap it out maybe the wrong way first and maybe back out. Also that camera takes an awesome pictures.

It does take awesome pics. How much does one of these scopes run?

 

[Professor Doolittle]

I'm guessing Bushnell bore sight. When turn the know it expands the mandrel. If you twist it after tightening, it will score the bore.

Barrels are much softer than people realize.

That's why I am so anal about cleaning.

 

[coopdawg]

Looks pretty clear to me that the rifling machine jumped right there and left a burr in that barrel. If it's a custom I would send it back.
You might be able to fire lap it with the abrasive bullets sold by david Tubbs. I'd start with the most abrasive and work through the whole set. That will probably take care of it, but if I paid good money for a custom barrel I'd be send it back and ask them to cover the cost of re-chambering.

 

[Herbie]

Is the lens on the bore scope damaged?

No

 

[Herbie]

It does take awesome pics. How much does one of these scopes run?

It was around 50 or 60 dollars about a year and a half ago. I would never buy another Teslong since I found out it is Chinese.

 

[Firewurx]

It was around 50 or 60 dollars about a year and a half ago. I would never buy another Teslong since I found out it is Chinese.

Ya, the name screams Xi Jinping. Shoutout to Apple for helping me spell that correctly. (Who's in who's pocket I wonder?)

What does the crowd recommend for entry level bore scopes?