Hmmm, And how did this get through QC?

[Allen R]

Well I will be sending a rifle back to the factory for the first time in my life. I got this .22 to possibly dabble in NRL22 shoots and some local club .22 shoots. I brought the gun home and ran a couple patches down the barrel. Tried 6 different brands of shells and settled on one to practice and begin “seasoning” the barrel. The more I shot the worse it grouped. I cleaned the barrel and decided to bore scope, Pics are not good quality but check the gouges out in the throat. I’ll not mention the maker but you can bet I’ve learned a lesson I’ll be checking every barrel from now on.

 

[TRSR8]

Production gun……you pays your money, you takes your chances.
With a little homework on factory guns, you can substantially reduce that outcome.

 

[K22]

The answer - No QC!

Second option: QC texting instead of inspecting!

 

[T.Rhodes]

Barrel cut on Friday before noon Christmas office party...

 

[Rimneck]

Yikes!

 

[sacre]

Had one worse than that on a used gun I bought. Had a Smith set it back 0.25" and rechamber.

 

[rwj]

Very few companies inspect every part. Sampling inspection has become the norm. It is likely that your barrel was not selected to represent the group. The one that was, likely passed inspection which allowed all in the group to proceed downstream.

 

[snowpro440]

It happens !

 

[tommeboy]

You think that is bad look at the 9mm AR barrel from Wilson I got.

 

[Idaho-Lefty]

Barrel cut on Friday before noon Christmas office party...

More Like AFTER,.. the Christmas Party at,.. 3 AM

 

[Idaho-Lefty]

Just bought, a clean looking, 1990 Mfg, Marlin 30 A, .30-30 at, a Pawn Shop, last week.
The Barrel was reasonably Clean and we looked at it, carefully with, a Bore Lite to Verify,.. YUP, it "Looked Good" and was, a Micro-Groove barrel and, "Shoot's" MOA easily, with 150 gr. Sierra's and 31.5 grs of, 3031,..
Yippee,. I'm, a Happy Camper !

 

[Squirrelhunter17]

What rifle is this

 

[diyj98]

Why not tell what rifle it is?

 

[sacre]

 

[grauhanen]

Inspecting each barrel with a borescope would be time consuming for each manufacturer. There must be a certain level of confidence that bores will at least appear as they should that allows barrels to be made and used without having to pass careful visual inspection.

Unfortunately, despite a high level of confidence that all is as it should be, barrels get on rifles with visually sub-standard bores.

Below are some images from the bore of an Australian-made rifle that I bought new in 2018. Fortunately the manufacturer readily agreed to replace the firearm after seeing the bore images.

 

[Alex Wheeler]

You think that is bad look at the 9mm AR barrel from Wilson I got.

The ops barrel doesnt supprise me. But you got a dandy!

 

[L.Sherm]

Inspecting each barrel with a borescope would be time consuming for each manufacturer. There must be a certain level of confidence that bores will at least appear as they should that allows barrels to be made and used without having to pass careful visual inspection.

Unfortunately, despite a high level of confidence that all is as it should be, barrels get on rifles with visually sub-standard bores.

Below are some images from the bore of an Australian-made rifle that I bought new in 2018. Fortunately the manufacturer readily agreed to replace the firearm after seeing the bore images.

Was that on a barrel with zero rounds down it, I saw a very well known Barrel makers barrel that was perfect looking but after 200 rounds it started shooting like crap and looked similar after 200 rounds.
It was a steel problem that no QC would have picked up, shit happens to the best of them

 

[L.Sherm]

Perfect barrel brand new, after 200 rounds.

 

[grauhanen]

Was that on a barrel with zero rounds down it, I saw a very well known Barrel makers barrel that was perfect looking but after 200 rounds it started shooting like crap and looked similar after 200 rounds.
It was a steel problem that no QC would have picked up, shit happens to the best of them

Yes. As noted the rifle was bought new and the manufacturer readily agreed to replace it. Simply shooting a rifle shouldn't cause the bore imperfections seen in the barrel.

 

[L.Sherm]

Thats what happened In the pic I posted.
I saw the same thing on 6 barrels that were bore scoped before heat treat were perfect looking after heat treat when I was cleaning the barrels there it was. It was only out of 1 stick of barrel steel in the lot I was just about to reject the whole lot but the barrel steel manufacturer had me test some other sticks and the rest were fine, go figure.
Thats great they replaced it, my point is not 100% of the time barrel manufacturers are 100% in control of what happens to the barrel even if every single one is QC with a bore scope, there at the mercy of the steel.