10/22T Problem - Case Blowouts *** Update Post 39 - Problem Identified***

Glad you got the rifle working properly again - pity you had to deal with buggered up equipment.

Unfortunately when you buy other people's used stuff, you may also be buying their problems. Or they've fouled the thing up and want to get rid of it rather than spend money fixing the output of their incompetence.

I bought a CZ85 a while ago - someone had worked on the sear engagement on both the hammer and sear, and made it so unstable that an attempt to apply the safety would fail, and when I took the pressure off the safety lever, the hammer would drop. Fortunately this never happened when I had a round chambered. A new sear (included when I bought the gun) and a new hammer (bought later when I'd figured out what the problem was) and everything works again, but... sheesh.. ease up on the stoning parts folks unless you know what you're doing!
 
AikiNut said:
Unfortunately when you buy other people's used stuff, you may also be buying their problems. Or they've fouled the thing up and want to get rid of it rather than spend money fixing the output of their incompetence.
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You know, I've bought quite a few used firearms off the EE (probably 20 or so) and this is the only one that I've ever had a problem with. And it was a fixable problem too so I still feel lucky. Still, anyone who knowingly sells a firearm that they've buggered up is a full value dink.
 
Ouch, sorry to hear that was the issue... Glad you got it all sorted out though. I've thought about things like this before, but never actually expected it to happen. Certainly gives me something to think about when doing modifications.
 
BigUglyMan said:
The warranty guys contacted me this week and advised me that the previous owner had ground away part of the rear of the bolt which lightened it and subsequently allows it to open before the pressures had dropped to a safe level.
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Was this radiusing the bolt to smooth the action or something more extreme? Do you have any pics of the bolt and did the parts make their way back to you?


Hodaka said:
Would the commonly practised radiusing of the rear of the bolt be enough to cause this? I've not wanted to go that far with my bolt, as I am worried about this exact problem occurring. Maybe with the addition of a heavier spring?
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That's what it sounded like to me, too. I can't imagine that the standard radiusing would cause problems, though. It has been done to thousands of 10/22's, if there was an issue it would be widely known at this point.


Mark
 
"Radius-boy" probably went overboard and removed too much from the rear of the bolt. Since a belt sander is one of the radius creation methods mentioned a home gunsmith would have to proceed with caution. Without being very familiar with the normal 10/22 bolt dimension or having another to compare against it would not jump out to the next owner :-(

Ideally should have only been sold as a parts gun...
 
Interesting. I've radiused several 10/22 bolts and run them in rifles with heavier recoil springs as well as well-worn recoil springs without issue. I've also cut hammer springs and polished hammers to increase bolt velocity. I've done this with both loose OE chambers and tight match chambers without issue. Here's my thoughts. The combination of radiused bolt with the aftermarket trigger group may be the issue. An overly light hammer spring and/or hammer might cause this. I'd say try a stock trigger group but you've already paid for warranty work.
 
BigUglyMan said:
You know, I've bought quite a few used firearms off the EE (probably 20 or so) and this is the only one that I've ever had a problem with. And it was a fixable problem too so I still feel lucky. Still, anyone who knowingly sells a firearm that they've buggered up is a full value dink.
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I've bought one, traded one, sold one on EE. No problems to date. Fully agree that if someone who stuffs up a gun and then dumps it on an unsuspecting other deserves to be hung by the eyelids and kicked in the cojones until he blinks.
 
I've radiused many 10/22 bolts over the years and NEVER EVER had a problem. (combined with different trigger groups, springs, charging handles etc.)
The previous owner must have massacred it......
 
Well I'm not 10/22 expert so I can't say how drastic the change was, but I'm curious to see when the rifle is returned. I took the rifle apart but didn't see anything glaringly wrong. I have to call the repair company to pay for the repairs. Just keep forgetting to do it before I get home which is too late to be calling Quebec. Time to email myself the number and call from work!
 
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