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Discussion Starter · #1 ·
My first trip to the range with the 7.62x39 XCR turned into two Saturday trips.
Before I went, I preloaded the 30 round mag 4 times. It never did unload well by hand. The follower would not always push the cartridges up. At the range it worked 100%.

The first Saturday was for fun during the break-in. I invited a friend and my son along. We shot at close range and all shot to the same point of aim with the MI front sight and an A3 carry handle sight. Don’t flame me for my choice in rear sights. I had a $100 rear sight lying around I couldn’t bring myself to spend money on a different one. We had the XCR on gas setting 4 and loaded the mag with 30 rounds. Having one mag really slows things down when you are shooting with others. Somewhere at 200 rounds we started loading 20 cartridges.

We shot 281 rounds Wolf Military Classic 124gr. The last 51 rounds were on gas setting 2. I shot 11 shots out of 20 and the bolt would not move. It was time for us to leave anyway so I packed the gun up to go home.

I did try a Colt .223 9 shot mag. It sometimes worked when loaded with three 7.62x39 cartridges. When it failed the cartridges nose dived in the mag.

At home I used a brass punch and hammer to move the bolt back. A fired casing was stuck in the chamber. I would need this knowledge on the following Saturday.

The next Saturday was just me. The drive was pleasant with the leaves falling from the trees and an overcast sky. No sun to beat down on me this time.

This was long distance sighting in time and to try out a scope. I want to eventually hunt deer and hog with this gun. I went through 131 rounds of Wolf Military Classic 124gr without a single problem on gas setting 2. A 5 round mag would have been nice since the 30 round one gets long with a bipod.

I also shot 12 rounds of Corbon 762x39 125gr. This stuff is around $1 per shot. But I want to use it for hunting. Only three of the Corbon ejected on gas setting 2. I got practice hitting the but stock on the table while pushing on the charging handle. One hit worked every time. I moved to gas setting 3 but it still did not eject. Gas setting 4 ejected every one.

The scope did not work well is this setup. The eye relief was okay but there was no check weld. It was more like a chin weld with my mouth open.

When I arrived home my Yankee Hill Machine ½” risers had arrived. I mounted my red dot scope. This will probably be more accurate than the scope setup. This is the setup I had in mind anyway.

Shooting on gas setting 2, when standing, is like being kissed in the shoulder. It is very pleasant.

The 30 round mag has straight ends and a more aggressive curve in the center when compared to an AK mag.
 

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Yeah, it's always nice to have tools available at the range..... just in case. :duh: I militech1'd the hell out of my 6.8 bolt prior to breakin and (crossed fingers) haven't had a problem yet. I'm happy with the 6.8, but am on the list for the 6.5. I wonder how those Wolf 7.62x39, 154gr softnose will work in the XCR? They should be devistating at short range (200 yards or under). Damn sure hell on Hogs. ::)
 

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I'm going to try my very hardest not to rip on that rear sight... >:D

Anyhow, I don't know that I'd be "happy" with cases getting stuck in the chamber... am I missing something? Is this something you are investigating?
 

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I read it as saying that he is happy to know that the gun will run as long as it is on the correct gas setting. I had a similiar problem with an AR leaving fired rounds in the chamber. Turns out the low-pro gas block had loosened up.

Sounds to me like the rounds are either lowered powered or you will have to leave it on setting 4. My question is how far was it throwing the brass on setting 4 with the Corbon? Did it feel the same as shooting the wolf?
 

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Discussion Starter · #5 ·
When I shot the Corbon I was at the benches. It bounced off the next bench, so I can't compare landings. Both rounds felt brisk when supported at the bench. But I'm used to a 10.5 pound AR.

If a round does not eject, should it be hard to get the casing out?
I could not cycle it by hand.
 

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I am sure there are way smarter people on here when it comes to what happens to the case when it is fired. Not sure how case expansion coupled with a low power setting results in a stuck case. I had to do the same thing with my AR when the gas block was loose. I felt silly hitting the butt of the weapon on the bench every round.

One thing that may contribute (though I am not sure the correlation) is if the round is being fired on too low a setting the bolt may get enough push to move a little (Super short stroke) but not enough to eject the fired case. The bolt is then going back into battery and perhaps it forces the brass forward a little? maybe since the brass is still hot it is maliable enough to push the shoulder back?
You would have to measure the shoulder on one that was stuck and compare it to one that wasn;t to really see if there is a difference.

Are you confused yet? I think I am ;)
 

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The round that got stuck was probably due to not enough energy to eject the round. It's unlikely to happen again now that your break in is complete. ;)
 

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Discussion Starter · #8 ·
0000032952 said:
What's the make/model of your bipod ?

Do you like the bipod ?

Any issues with it ?
I got it from www.cheaperthandirt.com it is item BIPOD105 and costs $27.97.
I lost the box and I can't remember the brand name.

Likes:
1. it is cheap
2. it detatches with a push of a button.
3. picatinney rail mount. I switch between my AR15 and XCR. With the fore grip / light combo I hav on the XCR I unscrew the flashlight.
4. folds in both directions.

Issues:
1. the bolt is held down by 2 nuts. I lost one nut rather quickly. I lost the bolt last month. I replaced the bolt and used a nylon lock nut.
2. I keep forgetting that it is better to pull the legs all the way out. This puts my elbows under the gun instead spread out. This is ME not the bipod's fault.
 
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