XCR What happened?

midnightpossum

midnightpossum

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I went to the range the other day to fire of my cz 858... and there was a guy there with an XCR... I was admiring it... looks dam kool....It was 7.62/39,And he said it didnt like the surplus stuff... so he was shooting some soft point...Anyhow he managed to maybe get 20 rounds through it before it failed.The bolt would only open about 1/4 of the way...I overheard (Kinda) him telling is buddy that something or other had swollen.. and that he would have to remove the barrel.... I am just curious what it could have been... as I am not entirely knowledgeable,And I thought for $2400 bucks this kinda thing shouldnt happen. Could someone be kind enough to enlighten me.
 
Some companies shoot ammo from all over the world to check function of their weapons before they are out the door. Other's don't test all that much.

Rich
 
It is hard to guess what really is going one with his XCR based on what you kind of "overheard" him saying to his buddy ;)

However since all we have is your impression to go on, I am going say it based on what he said about how "it doesn't like surplus ammo" that it is the gas setting is too low.
 
Something had "swollen"? o k a a y.

IMO the only reason to get anything chambered for 7.62x39 is the surplus ammo cost :D
 
What is the point of this post.
Have us guess at a problem ?

this is silly.......

Was it wet outside? maybe the surplus wooden bullets 'swelled' with the moisture and one got stuck in the barrel.
 
My buddy had a XCR in 7.62 x39mm and he was using the surplus stuff and one of the rounds had metal fatigue on the casing and when it tried to eject the shell, the rim failed and it got stuck.
 
Mine Shoots the cheap surplus just fine, the only other thing I feed it is my reloads that also work well. Case head swollen maybe? possibly didn't have the barrel fully seated or running the wrong gas setting and stuck the case on extraction. Hard to speculate without seeing it. Robarms test fires their guns with lower powered Wolf metal case, if it shoots that it should shoot anything.
 
He had his gas set too low. Case partially ejected, then slammed back into the chamber. Steel cased ammo has less "shrinkage" after it fires and will stick in the chamber like this. Had it happen to mine a few times till I turned the gas up.
 
That's the thing with this gun, you need to have an idea how powerful your ammo is and set gas dial accordingly. I recommend anyone who owns this gun to search and read XCR forums and read the manual fully before shooting. Or you could always leave the gas on it's highest setting (4) for reliability but it may be hard on the gun in the long run if using snappier ammo all the time.
 
"Hi, I'm interesting in getting a XCR as well. If you don't mind telling me, what kind of malfunction did you have?"

A simple question would've cleared up your doubts.
 
Umm.. I'm betting this is a new XCR owner, who didn't turn it up to 4 before shooting his first 200 rounds.

I did that with mine, after than I've run it on 1 ever since, and never had a single failure to fire, eject or chamber.
 
8 ball said:
He had his gas set too low. Case partially ejected, then slammed back into the chamber. Steel cased ammo has less "shrinkage" after it fires and will stick in the chamber like this. Had it happen to mine a few times till I turned the gas up.
Click to expand...

This was most likely the culprit.
 
How are you guys enjoying your XCR's (apart from cheap ammo)?

Are they worth the 2400 (just wondering why priced so high - is it due to NR legal status?) as you can get some pretty other 'toys' in that price range
 
carbonrod said:
Odd that so many skss, vzs, and the like don't have this issue though don't you think?
Click to expand...

Well they don't have an adjustable gas valve. Having it on the wrong setting will give you problems with cycling. I made a custom sized hole in the gas valve on mine for surplus ammo but I like to tweak.

Some guys can run them fine on the lowest setting some can't.
 
The Giant said:
Well they don't have adjustable gas valve. Having it on the wrong setting will give you problems with cycling. I made a custom sized hole in the gas valve on mine for surplus ammo but I like to tweak.
Click to expand...

Do you think that having to adjust the gas setting for various commercial ammo is something that should be resolved at design time, or at range time?
 
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