Gouges/Lapping new barrel?

[deertroy1]

I had a new rifle built on a Lone Peak action. After chambering the gunsmith fired once to proof test.
Once I received it I thoroughly cleaned the barrel. For only have been fired once it took a lot of patches and Bore Tech Eliminator. After soaking it overnight and dry patching it I had a look at the barrel with my bore scope and seen this!
I proceed to clean this out and had another look and seen this!
I realize a borescope make things seem worse but these seem pretty bad to me. If you notice in the second video one of the gouges sem to have caught a piece of thread for a cleaning patch.
My question is: now that the barrel is chambered, cut, crowned and installed, can the barrel maker lap these out or is the barrel toast?
If one shot is picking up this much copper (I can't imagine what was there before I cleaned it) what would it be like after twenty shots.
Before anyone ask, I use coated one piece cleaning rods, aluminum jags, bronze core nylon brushes and a bore guide.

 

[DShortt]

All I really see is some copper deposits left in the first video.
I would finish removing the copper and not fire the barrel clean and dry. That's likely why it coppered with one shot.

 

[ShtrRdy]

I would do several more of the fire one shot and clean cycles before making an assessment. The barrel looks pretty nice in the video.

Would you mind posting a video of the throat area of the chamber?

 

[243winxb]

Break in Method.
Factory barrels need more break in.

Less to little for custon or hand lapped barrels.

Do the break in, report back.

 

[L.Sherm]

If thats a factory barrel that's one of the best I've seen.
Just about every factory barrel ive looked down has some kind of tooling marks some worse than others

 

[ShtrRdy]

If thats a factory barrel that's one of the best I've seen.
Just about every factory barrel ive looked down has some kind of tooling marks some worse than others

Please read the first sentence on the original post.

 

[deertroy1]

All I really see is some copper deposits left in the first video.
I would finish removing the copper and not fire the barrel clean and dry. That's likely why it coppered with one shot.

Check around 2:05 - 2:15 of vid #2

 

[DShortt]

Check around 2:05 - 2:15 of vid #2

You're right, didn't see that the first time.

Keep in perspective, that's magnified quite a bit. If the OP is really worried about it, he can contact the barrel manufacturer and see what they think. Personally, I think by the time the OP does load development, that will probably be difficult to locate again.

 

[tac284]

Looks like you have a minor gouge in the top of that land that is tearing the jacket causing copper deposits in and after the gouge. How far down the barrel from the chamber?

 

[L.Sherm]

Please read the first sentence on the original post.

I did, only reason I posted what I did because a factory barrel was mentioned

 

[L.Sherm]

The throat could be a little rough from the chambering causing some of the coppering.
I would give it 15 rounds and see if it starts getting better

 

[deertroy1]

Looks like you have a minor gouge in the top of that land that is tearing the jacket causing copper deposits in and after the gouge. How far down the barrel from the chamber?

Most of the scratches are at or within two inches from the muzzle. It's these raise up burrs I'm most concerned about. Especially where they're so close to the muzzle and catching most of the copper!

 

[L.Sherm]

I've seen barrels copper pretty good at the muzzle its like the throat area is a little rough and a copper mist goes down the barrel and collects towards the muzzle.
After 12-15 rounds it basically quite.
Theres 2 choices shoot it and see if it clears up or see if the barrel manufacturer will give you a new one and start over.
The only other solution I see is some very mild lapping BUT if you dont know what your doing can be more of a determent than good.

 

[DShortt]

I've seen barrels copper pretty good at the muzzle its like the throat area is a little rough and a copper mist goes down the barrel and collects towards the muzzle.
After 12-15 rounds it basically quite.
Theres 2 choices shoot it and see if it clears up or see if the barrel manufacturer will give you a new one and start over.
The only other solution I see is some very mild lapping BUT if you dont know what your doing can be more of a determent than good.

^^^^^^^

 

[deertroy1]

I've seen barrels copper pretty good at the muzzle its like the throat area is a little rough and a copper mist goes down the barrel and collects towards the muzzle.
After 12-15 rounds it basically quite.
Theres 2 choices shoot it and see if it clears up or see if the barrel manufacturer will give you a new one and start over.
The only other solution I see is some very mild lapping BUT if you dont know what your doing can be more of a determent than good.

I was hoping the barrel manufacturer would lap it.

 

[DShortt]

I was hoping the barrel manufacturer would lap it.

Everybody makes mistakes.

Contact the barrel manufacturer and show them what you are seeing.

Their response will tell you what you want to do next.

I'd say they did lap it. Should it have been rejected before lapping?

That's the question.

 

[Bob3700]

Lapping that scratch out of the bbl at the muzzle will only make the bore bigger at the end where you want it to be tighter. Contacting the bbl manufacturer and sharing the video with them is the first move. If the bbl is yours to keep, then I would recommend a bit of JB bore paste to polish the bbl and leave it at that. I would be surprised if that small imperfection will be an issue. If it is, you can always shorten that end and re-crown.

 

[deertroy1]

Lapping that scratch out of the bbl at the muzzle will only make the bore bigger at the end where you want it to be tighter. Contacting the bbl manufacturer and sharing the video with them is the first move. If the bbl is yours to keep, then I would recommend a bit of JB bore paste to polish the bbl and leave it at that. I would be surprised if that small imperfection will be an issue. If it is, you can always shorten that end and re-crown.

The barrel manufacturer seems to think it was done with an indicating rod (the gunsmith who did the work is very good but as was stated; mistakes happen).
It can't be shortened without it looking stupid. It's spiral fluted.
I was wondering about JB Bore Paste. I've never used it on a custom barrel but at this point I guess I have nothing to lose.
Fire once, clean with JB, fire again more JB and see what happens.

 

[DShortt]

The barrel manufacturer seems to think it was done with an indicating rod.
It can't be shortened without it looking stupid. It's spiral fluted.
I was wondering about JB Bore Paste. I've never used it on a custom barrel but at this point I guess I have nothing to lose.
Fire once, clean with JB, fire again more JB and see what happens.

The barrel manufacturer thinks it was done with an indicating rod?

Right

 

[L.Sherm]

The barrel manufacturer seems to think it was done with an indicating rod (the gunsmith who did the work is very good but as was stated; mistakes happen).
It can't be shortened without it looking stupid. It's spiral fluted.
I was wondering about JB Bore Paste. I've never used it on a custom barrel but at this point I guess I have nothing to lose.
Fire once, clean with JB, fire again more JB and see what happens.

I wouldnt use J.B just yet, you maybe getting the cart in front of the horse.