Borescoped my new barrel blank before machining

B

Budweiser360

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Did I make a mistake and borescope this? Maybe ignorance is bliss, but, now that I've looked at it, this barrel seems to have quite a few imperfections in the steel. It makes me wonder how deep these pit and wormholes go.


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Honestly I have never bore scoped a rifle and really don't want to.

In this case I can't ask the typical question of does it shoot well or not ? My understanding is tooling leaves marks so its bound to happen more or less depending on the machining processed used to cut the rifling along with the tooling age and sharpness.

Allot of issues will get worn down after shooting the barrel a few times along side proper cleaning. Was the barrel lapped prior to shipment ? An is it a big name brand or someone smaller ?

I would say chamber it and send it! or maybe look in some factory barrels on newer rifles for comparison ?

B
 
Budweiser360 said:
Brand new blank from Bartlein.
Click to expand...

I would trust bartlein and chamber/shoot it. If it doesn't shoot whats warranty going to do ? and if you dont chamber it can you return it ? can you sell it ? If you include the photos some might not want to buy it.

That said I would be extremely curious to see to see it chambered and shot. Then bore scoped again once you have some accuracy findings and see what shooting does to the imperfections.

Do you have any other Bartleins on good shooting rifles you can look at to compare ?

B
 
For the vast majority of shooters owning a bore scope is a waste of money. Here you are questioning a top name in barrel makers before even shooting it... sell your scope and buy another barrel.
 
Budweiser360 said:
Did I make a mistake and borescope this? Maybe ignorance is bliss, but, now that I've looked at it, this barrel seems to have quite a few imperfections in the steel. It makes me wonder how deep these pit and wormholes go.
Click to expand...

Have you chambered and installed a barrel before ?
Just asking cause , well I dont know.
Possibly you already know the answer.
Me, I like to fix things till they break.
Be interested so see the final outcome when together and shooting.
Rob
 
It looks more like foreign object debris on the surface than a defect in the surface. Try running a few patches, and try pushing the 'weird things' with the camera itself and see if they move.
 
GimpyGolden said:
I'm going to keep the mantra that ignorance is bliss and NEVER buy a borescope.
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Yea. Does it matter what a barrel looks like, as long as it shoots?

Would the hoi-poloi be happy if their new barrel was absolutely perfect and the rifle didn't group?

Fixating on the look of the bore is fixating on the wrong thing.
 
Budweiser360 said:
Did I make a mistake and borescope this? Maybe ignorance is bliss, but, now that I've looked at it, this barrel seems to have quite a few imperfections in the steel. It makes me wonder how deep these pit and wormholes go.
Click to expand...

LOL, most of those are inclusions in the steel and most of them are absolutely tiny. Look at the size of them compared to the size of the lands / grooves.

STEP AWAY FROM THE BORESCOPE and get on with your life.
 
adamg said:
It looks more like foreign object debris on the surface than a defect in the surface. Try running a few patches, and try pushing the 'weird things' with the camera itself and see if they move.
Click to expand...

This^
Looks like cleaning patch fluff. I don't know how how a defect could be proud after a broach has been pulled through.
 
$60 horoscopes are handy tools for the average shooter to own. I use mine all the time to aid in cleaning my F Class rifle. Use it see if I've removed all of the flowing and that's about it. I've seen imperfections use as this on previous Bartlien barrel, as well as my current Kreiger... at the end of the day, they both performed well.

Keep your borescope for the purposes of verifying your cleaning process.... they are damn handy for other applications as well... inspecting brass, dies..
 
I borrowed a fairly good bore scope from my local GS to see if I wanted to buy one. Tried it on two nearly new Tikka T3x's plus a custom IBI barrel and decided the panic I felt looking down the barrels was not worth the price lol

Eventually wound up buying one of the cheap USB scopes to check after cleaning etc, but as far as having one to inspect barrels otherwise, no.
 
I think most (if not all) of what you're seeing there is cloth fibers from cleaning patches. Note where the "inclusions" are, run another patch down the bore and I think you'll see that things have moved.
Remember, there's a fair bit of magnification there.
And yes, today's barrel makers probably hate those cheap borescopes.
 
OP, that barrel is fine.

I've seen a lot worse.

The only time those minute imperfections aren't there is when they are lapped out.

There aren't any "chatter tracks" and only very fine tool marks, which are impossible not to get with cut barrels.

As mentioned, install it and shoot it.


I had an M29 Mosin, New in Grease, and a fellow bore scoped it and immediately declared "it's pitted" If you looked down the barrel with a light, it was bright and shiny. I gave him his money back with no hard feelings. Took it to the next gunshow and it lasted fifteen minutes.

Magnification will make any surface look flawed.
 
It's SUPER unlikely that there are voids in the steel. I've been a machinist for 20 years, and in the hundreds of thousands of parts I've machined out of bar stock, I've only ever seen imperfections or voids a couple of times. It just doesn't really happen. The overwhelming majority of what you're seeing is just junk that will likely be removed by the first bullet that passes by.
 
I looked at 5-6 of your pictures

What I see is dirt etc

You want to see a bad barrel look at something 30-50 years old that has been shot alot or a barrel that has had corrosive in it
 
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