Pitting in a new barrel

[tommeboy]

The pits are like from impurities in the steel. The best reasonable explanation I've seen for the rings is they are from the drilling operation. Some of the cuttings are not flushed away and are making these marks. The hammer forging to create the rifling does not completely eliminate them.

Actually the RINGS as you call them are the tooling marks from the reamer as it feeds in. When the barrels are button rifled SOME of the rings will be smoothed out. The ones that are not smoothed out are a loose spot in the metal and the button is not swaging the marks out. Pretty sure Savage has the worst surface finish in the whole industry. But they shoot pretty well.

I had a 223 Savage years ago that tore patches from the interior surface condition. Got about 500rds on it and it stopped tering patches and the fouling got a lot less.

What the OP has is of NO CONCERN.

 

[Abram]

To be honest I do not know what BDS is, I think the term "Derangement Syndrome" is thrown around too much. This Ruger is the first new gun I have ever owned and I bought the scope to

1. See how good a job of cleaning I was doing. Yes I know shoot it and do not clean until accuracy falls off. I
do not subscribe to this ideology. My father had me clean my rifles after every shooting session.
2. I have several very old rifles that I was curious as to what the bores looked like, nothing more. It is a fun
toy to play with.

Never having owned a new rifle I was surprised by the pitting after so few shots hence the reason for my question. I was curious if others had seen this in a new rifle and if not perhaps give me an idea of why it did this. The rifle shoots fine, it was more a curious question than anything.

Thank you

 

[jelenko]

shoot it and do not clean until accuracy falls off.

Not for people who compete and need the accuracy.

 

[SKWERLZ]

For a factory barrel that is pristine! The pitting is probably from the quality of the original steel. Shoot it and enjoy it. Look at a Savage sometime and you will realize how great your barrel is. Carry on.
Paul

 

[David Milisock]

God, has put bore scopes on earth to ruin you day!

 

[M-61]

Look at a Savage sometime and you will realize how great your barrel is. Carry on.

Especially look at the groups it is shooting.
It’s actually a paradox.

 

[ELR LVR]

This year I purchased a new Ruger American Gen 2 Predator. Cleaned the rifle and looked down the bore, looked great, and I have about 4 ranges trips on the rifle. I clean after every range trip using Kroil and Hoppes #9, works pretty good. After my last range trip I decided to take a look down the bore and there appeared to be pitting, at least it loos like that to me. Why on earth would a new barrel pit like this, if is pitting. I store the rifle in my den, below ground with a dehumidifier and none of my other rifles, shot more than this one, show this level of pitting, I am at a loss. There is also some rings in the second picture that I have no idea what they are. Any ideas folks

Your bore looks insanely smooth/ polished in fact
Did you take after it with some sort of Polish?
Or was it that smooth from the factory?
---------------------------------------------------------
FYI:
Hoppes is not a protectant oil.
It is a solvent (kerosene)
-------------------------------------
Experiment for ya,
Poor some Kerosene or even diesel on your shop floor and come back the next day
tell me if there's any left or if it all evaporated
During the winter, when I spill a little diesel pooring it into my torpedo heater
I don't even bother to wipe it up anymore, as I've realized it has all evaporated by the next day
-------------------------------------
To protect Chromoly bores, I'd use silicon oil or something
then dry patch out before shooting

 

[M-61]

“below ground with a dehumidifier”
Meaning a basement?

 

[Abram]

I don't recall polishing the bore with anything but using the borescope I made sure all of the guns in my little collection were clean, I may have, but after cleaning and inspecting some 10 rifles I cannot be sure.

My Hoppes is mixed with some kroil, I guess the kroil is removed by the hoppes. I have been using a small bit of gun oil in the barrel during storage.

When I said below ground, the guns are stored in a safe in our Den which is climate controlled and mostly below ground, along with a external and internal dehumidifier, keeps the moisture down.

 

[Steve Donlon]

Actually the RINGS as you call them are the tooling marks from the reamer as it feeds in. When the barrels are button rifled SOME of the rings will be smoothed out. The ones that are not smoothed out are a loose spot in the metal and the button is not swaging the marks out. Pretty sure Savage has the worst surface finish in the whole industry. But they shoot pretty well.

I had a 223 Savage years ago that tore patches from the interior surface condition. Got about 500rds on it and it stopped tering patches and the fouling got a lot less.

What the OP has is of NO CONCERN.

I'm not sure what the rings are from but I think the holes are from impurities in the steel. No buttons where involved in the Ruger barrels . They are CHF barrels

 

[FNSafari]

No comment on the pitting, but unless you borescoped the barrel before you ever shot it you don't know if it was there when you first shot it or if its something that has developed. My guess is it was there from the get go.

You're shooting BUG HOLES but your bore scope tells you your barrel is JUNK?? What's wrong with this picture??
Get rid of the bore scope!! Folks didn't have issues before the bore scopes came out. A better mouse trap? I don't think so.

Well IMO, if you are paying north of $400 for a barrel blank and another $200 + for chambering and fitting to an action I would never accept a barrel with any pitting. Even in a factory rifle. Once you fire it the maker will blame you for the damage and good luck getting any recourse.

 

[Oso]

I seldom use my borescope… I bought it and forgot it in the corner. I decided to pull it out on a Remington that I purchased. I was horrified!!! “Pitting” would have been welcome… I had Massive Craters and heavy chatter marks from top to bottom. After +500 rounds through the barrel the chatter marks have smoothed out a bit and the sharp edges of craters have smoothed over.

For factory your barrel is a dream!!! Don’t sweat it… if it shoots then enjoy it.

 

[jelenko]

For the record, I borescope my barrels after each cleaning.
I like to know what my cleaning has done and to keep track of how much carbon is left in the throat area.

I clean so that the carbon in the throat so that at least 2/3 of the each groove shows no black.

I really, really don't want accuracy to drop off during a match. If that means the barrels has some number less rounds of accurate life, so be it.

 

[tommeboy]

I'm not sure what the rings are from but I think the holes are from impurities in the steel. No buttons where involved in the Ruger barrels . They are CHF barrels

Doesn't matter if the barrel is button or chf. If the marks are there before they may still be there after whatever forming is done