LR-308 issues

[gemini1]

OP Have you removed the gas block and tube, and check that tube hole is aligned with gas block hole? And on re-installation, make sure to have a small gap at the shoulder and block as mentioned above.

[nate76239]

It's also possible the bolt carrier gas key could be leaking, I remember a recent thread where the person had close up pictures of his chrome or nickel boron bcg and you could see on the sides of the gas key some dark areas where it was leaking

[Redeyedrider]

It's also possible the bolt carrier gas key could be leaking, I remember a recent thread where the person had close up pictures of his chrome or nickel boron bcg and you could see on the sides of the gas key some dark areas where it was leaking

True..... I forgot all about that. There's a way to test that with an air compressor.

I wouldn't suggest wrapping your lips around your rifle anymore

[hundy]

Hello, here is a update on my original post. I was not able to take it out and go shooting. I was able to re-check the gas block, and again air successfully went through the tube to the bolt carrier. I was going to remove it and re-install and check everything, however, I stripped the head of one of he allen heads as I was trying to remove it. So for now I am stuck with keeping it on as it is.
I checked the buffer tube and bolt, interesting finding was that my bolt catch is short of catching the head/tip of bolt head by a eighth of a inch. When I pull it back manually to lock it back, the bolt catch actually catches the tip of the bolt carrier.
So I think and hope that it is the tube as mentioned a few times here. I did order the Armalite buffer tube extension and spring. I did check and that buffer tube is much longer than the one I currently have. So I really hope that fixes the problem. I will let you know.

Thank you
Jay

[BigBamBoo]

Also might check the gas rings in the bolt. There has been folks having problems with the one piece gas ring.

Good luck.

.

[hundy]

I got the new Armalite extension tube and spring. I installed in the rifle today. The bolt catch now catches the bolt at the head, where it is suppose to catch. So I work tomorrow, So Thursday I am going to rush home. I have a doctor appointment at 0930hrs. Right down the street from the range I go to. So I am going to race into the range and try to fire the rifle and check it. If it works I am rushing home, if not I will remain briefly and tweek a little. But I am only going to fire this rifle and check it. Have to get home for the appliance repair man appointment and to pick up my son.

I will let you know how things go

Thanks
Jay

[Redeyedrider]

I got the new Armalite extension tube and spring. I installed in the rifle today. The bolt catch now catches the bolt at the head, where it is suppose to catch. So I work tomorrow, So Thursday I am going to rush home. I have a doctor appointment at 0930hrs. Right down the street from the range I go to. So I am going to race into the range and try to fire the rifle and check it. If it works I am rushing home, if not I will remain briefly and tweek a little. But I am only going to fire this rifle and check it. Have to get home for the appliance repair man appointment and to pick up my son.

I will let you know how things go

Thanks
Jay

Appliance repairman?!?!?!!?!?!?

Dude, Jay, you need to turn in your man card bro

edit to add -

I hope that's warranty work you're having done.

[hundy]

Appliance repairman?!?!?!!?!?!?

Dude, Jay, you need to turn in your man card bro

edit to add -

I hope that's warranty work you're having done.

No, you are right I get it. We just finished a full house remodel, part of that my wife got all new appliances. Our refrigerator stopped working in the middle of the night twice in 5 weeks. It was working fine when we got up, but everything thawed and got warm over night. So this all warranty work.

Thanks

Jay

[Redeyedrider]

No, you are right I get it. We just finished a full house remodel, part of that my wife got all new appliances. Our refrigerator stopped working in the middle of the night twice in 5 weeks. It was working fine when we got up, but everything thawed and got warm over night. So this all warranty work.

Thanks

Jay

I was just joking with you

Let us know how the shooting goes. It's funny cause you're just like me when I have a gun issue I'm working on. I try to fit my testing in where ever I get the chance...... I'm a full time single Dad of 2 teenaged girls so I don't get much "me" time.

I can picture you loading up your rifle and running around waiting to squeeze in your testing. I know cause I've done it.

[gemini1]

Hundy, you are aware that the longer Armalite (AR10) buffer tube, uses a different buffer right? If you're saying that the extension is longer, then Im assuming your old tube is for the AR15, with an LR308 buffer and spring?
Anyway, you can use the AR15 buffer with the Armalite (AR10) extension and spring you just got

[97F1504RAD]

Can I ask how many rounds you have fired through this gun?

I had this issue on a new build and I became very frustrated.

What resolved my issue was I hand cycled th bolt by pulling charging handle 100 times backward and forward. Then lubed the BCG wet and it took almost 200 rounds of ammo fired to finally get to the point where it would eject spent case and lock back.
Once it began locking back, I began adding two rounds to magazine to see if it would cycle and worked my way up to ten rounds once I got a full magazine through it, it has run like a champ. Now I just need to work on adjusting gas block down a bit to see if I can lighten recoil a bit since it is currently wide open.

[hundy]

I was just joking with you

Let us know how the shooting goes. It's funny cause you're just like me when I have a gun issue I'm working on. I try to fit my testing in where ever I get the chance...... I'm a full time single Dad of 2 teenaged girls so I don't get much "me" time.

I can picture you loading up your rifle and running around waiting to squeeze in your testing. I know cause I've done it.

I know, I took it as a joke, no big deals. And you are right, tomorrow is the only time I can try to see if this fix works, and my time window is narrow. but I am going to make it work, because I am itching to get it dialed in. Then in future when I can set aside some quality time, I will take it to outdoor range and try to zero it. I will post sometime tomorrow.

Hundy, you are aware that the longer Armalite (AR10) buffer tube, uses a different buffer right? If you're saying that the extension is longer, then Im assuming your old tube is for the AR15, with an LR308 buffer and spring?
Anyway, you can use the AR15 buffer with the Armalite (AR10) extension and spring you just got

Yes, I have a short 308 buffer that I am using, not the long AR-15 type. I am not sure on the old tube, could be for AR15 or I think its for a different type of 308 build. (not for the LR-308)

Can I ask how many rounds you have fired through this gun?

I had this issue on a new build and I became very frustrated.

What resolved my issue was I hand cycled th bolt by pulling charging handle 100 times backward and forward. Then lubed the BCG wet and it took almost 200 rounds of ammo fired to finally get to the point where it would eject spent case and lock back.
Once it began locking back, I began adding two rounds to magazine to see if it would cycle and worked my way up to ten rounds once I got a full magazine through it, it has run like a champ. Now I just need to work on adjusting gas block down a bit to see if I can lighten recoil a bit since it is currently wide open.

I have probably put 50+ rounds through it. I did lube the bolt and BCS well. I have only put 2 to 5 rounds in the magazine at any time. If I have time tomorrow I may do the cycling multiple times and see if that helps.


Thank you
I will update tomorrow
Jay

[97F1504RAD]

If you have only put 50 rounds through it I seriously suggest following what I did until you start trying to determine if there is actually an issue to be resolved other than just breaking it in. I was ready to throw in the towel due to frustration but decided to just keep going and it all worked out without changing anything.

[hundy]

Darn it! I was able to squeeze in some range time. Unknown if problem is fixed I have a new issue. But this I may know what the problem is (I think). Now the rounds wont fully eject. Prior to new fix they did eject fine, just did not chamber next round, and the bolt would never lock back after last round fired.

I think after installing the Armalite tube extension and using the Armalite spring, that the spring may be to strong or long. Even thought it did fix the issue of the bolt catch can lock on to the front of the bolt. I can feel that this spring is stronger.

So I think I can squeeze in another range day tomorrow. I am going to switch back to my old spring, and lube up the bolt and BCG (I did not have time today). I am also going to cycle it as much as I can.

I hope that does it. If not, back to the drawing board I guess.

I wish I had more positive news, but I guess the only positive is, I may be able to correct this new issue.

I will update tomorrow

Thanks
Jay

[gemini1]

Okay, so are you saying that the bolt would try to eject the spent case, but would not move back fully to let the brass fly out? You did not mention any double feeding, so I assume the bolt does not move back far enough to try and feed/push the next round?
Sounds like now you're not getting enough gas. Could it possibly be your gas block moved out of position when you stripped the screw, when you try taking it out?
What is the clearance between bolt face and bolt catch when you pull the CH all the way? I think there should be about 1/4".
Do not put the old spring back! remember you have a longer tube. The old spring was from an LR308, which is shorter, correct? If so, then your carrier can move too far back and damage the receiver. Stick with the new spring and check your GB/tube.
My LR308 carbine spring is also too stiff/strong. It still is even after 200 rounds, but my rifle functions flowlessly using ZQI and my reloads.