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Old 09-16-2019, 04:52 PM
amcneilly

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Unhappy Kidd breech face damage



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My family has a very old 10/22 that we have been slowly upgrading over the years, and we put on an 18" Kidd bull barrel in 2016. I just recently noticed damage to the breech face on the side opposite the extractor that looks very similar to what spalled concrete looks like. It looks like the metal has been flaked or chipped away over a period of time. I say over a period of time because the peaks of the damage appear to have been smoothed out by the bolt face by repeated cycling. Also, I seem to remember seeing this spot a while ago, but just thinking it was the finish rubbing off.

The gun still has the original receiver, bolt, firing pin/extractor, return spring.

My first thought is the bolt face has work hardened over the years, and is now harder than the breech face of the relatively new barrel, which causes it to chip away at the breech every time it cycles. On the flip side, my second thought is that it could be the opposite where the breech of the barrel was over hardened, and cannot absorb the bolt impacts without chipping.






I was going to install the barrel in another receiver with a new a Kidd bolt that I just ordered, but now I fear that the barrel needs replacing.

Has anyone else seen similar damage to a barrel? Is it just normal wear and tear? Should I bother putting it in a new receiver at all?

Just wondering what everyone's two cents were.

Naturally, I discovered this right before I was planning on taking this to a project appleseed shoot in two weeks, which makes me anxious about getting this figured out in time.
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Old 09-16-2019, 05:04 PM
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See this just below your post: https://www.rimfirecentral.com/forum....php?t=1170833
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Old 09-16-2019, 05:17 PM
amcneilly

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Couldn't figure out how to attach the pictures, so here are the links to them.

https://photos.app.goo.gl/jdXHmgvfM6piMExC9
https://photos.app.goo.gl/YSRor9DPXT8F8gGv8
https://photos.app.goo.gl/fdi8YYxPnjmnz8E26
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Old 09-16-2019, 05:24 PM
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I wouldn't worry about it. I've seen lots of barrels that look like that. I'm honestly not sure exactly what causes it so I'd rather not speculate. I don't think it is anything that will cause any type of problem or degrade your accuracy.
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Old 09-16-2019, 05:29 PM
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Yupp.. normal.. although IF you would have been running the KIDD bolt it would not be that imprinted
Not a issue..

Here is OEM barrels in varying degrees of wear.. all were run with OEM Bolts...

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Last edited by Chaser; 09-16-2019 at 05:33 PM.
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Old 09-16-2019, 07:39 PM
JeepsAndGuns

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That is from carbon and other powder/primer residue that is left from firing a round. This builds up in the action, on the bolt face, and breech face. The bolt then hammers it into the breech face. After lots of use, this starts to happen. It seems to happen more/faster on guns that are shot a lot and cleaned very little.
It is going to happen, there is nothing you can do to prevent it (other than not to shoot it). However cleaning often can help slow down the progression.
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Old 09-16-2019, 09:19 PM
GH41

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The bolt is harder than the barrel and wins every time. Don't worry about it. The 10/22 is as far from being a precision machine. At best it is pretty much junk. That's why aftermarket mods are easy to sell.
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Old 09-16-2019, 09:58 PM
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Yes that is what happens to the barrel breach face eventually. All that carbon/glass/debris gets hammered repeatably into the barrel by the bolt. It's just what happens with the ruger 10/22 blowback action cycling.

This is one of my SS KIDD's after a couple bricks though it before cleaning. After cleaning it looks pretty much the same:

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Old 09-17-2019, 02:49 PM
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Quote:
Originally Posted by Chaser View Post
Yupp.. normal.. although IF you would have been running the KIDD bolt it would not be that imprinted
Not a issue..

Here is OEM barrels in varying degrees of wear.. all were run with OEM Bolts...

This is very helpful, first time I saw this was on my Ruger 22/45 pistol after shooting for some time and I though my gun got damaged somehow and metal must be pretty bad on Ruger but now I see this on Kidd barrel I see it doesn't just affects OEM parts. Mine looks kind of like middle picture.
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Old 10-30-2019, 10:43 AM
skeeljc
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Barrel Face Damage

Looks like normal wear. Aluminum shrouded barrel faces look far worse. Good news is as damage progresses the contact pattern will increase in area.
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