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Posted: 7/4/2012 9:05:02 PM EDT
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I have just completed my build and took it out for a test fire. The first time was a single shot. I blew the bolt back but not far enough to chamber the next round. Charged it again, it fired one shot, then shot two, but on shot 2 it did the same thing again. Kicked out the spent round and the bolt closed again with no round chambered. A couple more tries and I started getting 3-4 rounds before the problem. Then it started trying to load the round and it seems the bolt slip of the back of the round and the bolt would close on the round with it halfway loaded? Rechecked the gas system tonight, taking it back out tomorrow to check again. Running some wolf ammo, rifle length gas system, a1 buffer tube, rifle buffer and spring.
It really seems like the bolt doesn't blow back far enough when firing. It charges with enough distance to function everything. Any ideas what is going on? I remember reading somewhere about trimming the buffer spring to dial in the cycling but I can't be for sure. Any help will be appreciated. Going out tomorrow for a second run after dissassembling the gas system and checking, then reinstalling it. |
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You might want to have a close look at your gas block. From what I understand gas blocks can sometimes have a tenancy to leak therefore bleeding much of the gas which is necessary for the weapon to function. Sometimes gas blocks can be misaligned pin therefore covering a good portion of the gas port and pinching off the necessary gas for proper function.
I have several AR-15s (Colt, RRA, Bushmaster, DPMS and home built) and they all function perfectly with Wolf ammo. I don't know why people always blame Wolf first. It doesn't make any sense to me. A good weapon should shoot Wolf just fine. My dad has a Model 1 Sales 10.5" AR pistol that has what sounds like the exact same issue, sent it back 1-2 times and still no satisfaction. I guess their strategy is to wear you down until you give up. I carefully removed the gas block and found that Model 1 Sales gouged the hell out of the gas block seat  The gas block itself also has some significant flaws on the interior as well. I believe that this specific problem/malfunction is the messed up barrel and a messed up gas block causing too much gas to leak. After I fix that issue I will see if that was the source of the malfunction. If it doesn't then I have to troubleshoot further.
I also have a 7.5" AR pistol that has always shot Wolf ammo perfectly. |
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check gas system first. line up gas block. what weight buffer are you using?
then lube the crap outta the bolt and carrier. I had this problem on my first build and thought I had it lubed up good. but I did not. pull the carrier out and pull the bolt out of carrier. lube the bolt "really" good. covering gas rings good. lube ejector pin and exersice it to work the lube down into the bolt. lube the carrier "really" good and give it a shot. everything is new metal on metal, lube it |
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Took the gas block off; checked the port in the barrel, and checked the tube. All good to go. Marked the center of the gas block hole and the center of the barrel hole to ensure perfect match up after installation. Took everything down and cleaned it again, lube everything individually, then re lubed everything after the bcg was reassembled. Lubed everything in the upper receiver and put everything back together.
Took it out for a test fire and the first 8 rds with wolf were fine. Then I had a failure to feed. It was only catching half the round and the bolt was closing on it. I cleaned the bore after every three shots and hit it with a little lube while it was open. Had a couple of rounds being ejected and not picking up the next round, but when I charged the rifle it picks the same missed round up just fine. On an last round it even failed to hold the bolt open. Did a couple of single round mag loads and it would do it 50% of the time. Even with different mags. Ran some good quality brass trough it and flawless function. I felt the buffer hit when doing that, I can't say it felt the same shooting to wolf. Maybe it just needs better rounds to break it in, not sure. I'm no knocking on wolf but I may have got a bad batch of ammo, I use wolf all day long in my carbine. I guess the real test will be to fire some o that same lot # through the carbine and check it. I have no idea what buffer weight I have. I just know its the rifle buffer? |
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Quoted:
I have no idea what buffer weight I have. I just know its the rifle buffer? If you have an A1 or A2 buttstock, you have a rifle buffer. There is one rifle buffer, no system of different weights like carbine. Don't change anything, just try some brass, full power American ammo. This is the ammo that the weapon was designed for. |
| Cheap and easy test will be to try that lot of Wolf in another firearm like you stated. I've had issues in the past with their .30 carbine 9mm and .223. I'd rule out mag issues since it ran good with other ammo. Check your gas rings on your bolt too and make sure they're spaced right. You can also try lubing up your buffer/spring and see if that helps. |
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Quoted:
Cheap and easy test will be to try that lot of Wolf in another firearm like you stated. I've had issues in the past with their .30 carbine 9mm and .223. I'd rule out mag issues since it ran good with other ammo. Check your gas rings on your bolt too and make sure they're spaced right. You can also try lubing up your buffer/spring and see if that helps. Don't tell him to continue to monkey with Wolf ammo. He needs to run some normal, full power ammo for a baseline. If it doesn't run that, there are issues with the weapon. |
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Gas rings are fine, spring and buffer is lubed. It has a prs stock with a1 buffer tube.
It shoots fine with brass ammo. Just having th random problems with the wolf. Tried the same mags with the brass ammo and they function fine. Just seems the wolf ammo is t working so well with the rifle gas system. I'm planning on double checking the ammo in my carbine. It usually chews wolf ammo up with no hiccups. |
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The reason that steel cased ammo is so cheap is because it is inconsistent. You might have one batch that runs fine in your rifle then you get another batch and it short strokes constantly. I went through the same thing with my rifle and thought it was everything but the ammo. After all was said and done it was definitely the ammo. I had the exact symptoms that you describe. |
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