@r.tenorio671 thank you, I'll know pretty quick if that's been the problem all along, then I'll put your method to use.
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AR new barrel cycling issues
- Thread starter Shoebox
- Start date
Here are those video links on AR15 troubleshooting from that other thread- I figure it can't hurt to have them here too.
www.arbuildjunkie.com
www.wingtactical.com
www.wingtactical.com
AR-15 Gas System Issues – School of the American Rifle –
AR-15 gas system issues such as under-gassed or over-gassed are common. To learn more, we spoke with Chad Albrecht at School of the American Rifle.
www.arbuildjunkie.com
How to Fix an Over Gassed AR-15
Most AR-15s are excellent firearms right off the factory line, but they sometimes need some fine-tuning to work their best. The good news is, you can solve many common issues with simple troubleshooting and adjustments, and by upgrading your components. If your rifle is performing under...
www.wingtactical.com
AR-15 Failure To Feed | Expert Information | Wing Tactical
At one time or another, you will likely encounter a situation where your AR-15 has a failure to feed. Learn how to fix this with the help of Wing Tactical.
www.wingtactical.com
Thanks dude your comment helped my dumb ass figure out why my new build wouldn’t cycle. Running an 18 in proof barrel in 6mm arc, it was advertised as rifle length gas system but turns out it’s rifle +1 so the rifle length gas tube I put in was too short. And yeah the barrel came with its own gas tube which was the right length, but I had to go and put in a different one I had on hand due to it being higher quality. Lol. It’s only my third build so didn’t notice anything was off with the length of the gas tube. Been reading through these forums for a week trying to figure out why this fucker won’t cycle, seen your comment, swapped out the gas tube and now it cycles flawlessly. Go figure.How far is your gas tube protruding into the upper? Does it end at the cam pin cutout like this one or is it shorter?
So I did essentially the opposite of your suggestion, started with adjustable block fully open and closed it 2 clicks each 2 rounds (40 clicks fully open to closed). 2 different factory loads (Norma and Winchester m193) would cycle the next round but not lock back, until about 10 clicks from closed. Then it wouldn't cycle the next round. Wouldn't run H335 24.5gr reloads at all.
Definitely not overgassed. Next step is sending to BA for evaluation.
Well I think I've solved my issue.
Initially the new gas block was leaking, but once I got a properly fitting block, factory ammo would run, but most of my reloads would not.
I was resigned to drilling out my gas port, but then decided to try one last thing - using a small base sizing die. That never occurred to me because these loads always ran reliably in the previous barrel. Apparently the BA 223 Wylde barrel has much tighter tolerance. The rounds would chamber, but apparently would expand enough to interfere with extraction, slowing the bolt in the process.
I ordered an RCBS small base die, and resized and loaded 50 rounds with H335, 10 each at 23.9, 24.2, 24.5, 24.8 and 25.2 (similar to a previous round of testing I had done that wouldn't lock the bolt back). All the 23.9-24.5 rounds functioned perfectly, but I had a few fail to lock back at 24.8 and 25.2. It may actually be a little overgassed at those loads, I had a light buffer in it at 2.5 oz.
I'm going to load up some more, and some different powders, add some weight back into the buffer, and see how it does, but I'm optimistic.
Initially the new gas block was leaking, but once I got a properly fitting block, factory ammo would run, but most of my reloads would not.
I was resigned to drilling out my gas port, but then decided to try one last thing - using a small base sizing die. That never occurred to me because these loads always ran reliably in the previous barrel. Apparently the BA 223 Wylde barrel has much tighter tolerance. The rounds would chamber, but apparently would expand enough to interfere with extraction, slowing the bolt in the process.
I ordered an RCBS small base die, and resized and loaded 50 rounds with H335, 10 each at 23.9, 24.2, 24.5, 24.8 and 25.2 (similar to a previous round of testing I had done that wouldn't lock the bolt back). All the 23.9-24.5 rounds functioned perfectly, but I had a few fail to lock back at 24.8 and 25.2. It may actually be a little overgassed at those loads, I had a light buffer in it at 2.5 oz.
I'm going to load up some more, and some different powders, add some weight back into the buffer, and see how it does, but I'm optimistic.
I would also recommend checking the gas rings on your bolt to make sure they have a good seal.
You can do this by extending your bolt from the BCG and then standing it on the bolt face vertically on a flat surface. The tension of the gas rings should keep the bolt in the extended position. If the bolt collapses, your gas rings are weak.
You can do this by extending your bolt from the BCG and then standing it on the bolt face vertically on a flat surface. The tension of the gas rings should keep the bolt in the extended position. If the bolt collapses, your gas rings are weak.
I have sold tens of thousands of 18" RG barrels with .093" ports over the last 15 years and never get calls about short stroking unless they are using light 223 ammo and a H2 buffer.
I loaded up some 73gr tipped match seconds from Midway with several loads of AR Comp. Finally got out to the outdoor range for the first time in a while. All cycled normally, except the lightest didn't lock the bolt back empty. But that's a huge step in the right direction, considering no AR Comp under 55gr FMJ would lock back at all.
They all eject about 4 o'clock and 8 ft or so.
Its not gassing issues then, for
Kicks if you have a spare bolt to try can bring light, carbine or rifle tube?
Here are a couple informative links
www.arbuildjunkie.com
www.80percentarms.com
AR-15 Buffers and Buffer Springs Basics – AR-15 News, Reviews and...
One of the most frequently asked questions in AR-15 groups or boards is, "What AR-15 buffers should I consider for my build?" The answer is not always as simple as someone would like, as several factors will determine the proper buffer. Complicating the process is the fact that many who are new...
www.arbuildjunkie.com
AR-15 Buffer Weights: Difference Is, and How to Choose
While AR-15 buffer weights are often overlooked in an 80% build, choosing the right one is important for your rifle's performance. Find out more at 80 Percent Arms!
www.80percentarms.com
AR-15 Buffer Weights: Difference Is, and How to Choose
While AR-15 buffer weights are often overlooked in an 80% build, choosing the right one is important for your rifle's performance. Find out more at 80 Percent Arms!
www.80percentarms.com
AR-15 Buffers and Buffer Springs Basics – AR-15 News, Reviews and...
One of the most frequently asked questions in AR-15 groups or boards is, "What AR-15 buffers should I consider for my build?" The answer is not always as simple as someone would like, as several factors will determine the proper buffer. Complicating the process is the fact that many who are new...
www.arbuildjunkie.com
I have tried 2 different BCGs, both of which work fine in my 300blk upper. Midway had an AR Stoner lightweight BCG on sale, so I picked one up, I'll try it next time.
I have tried milspec carbine spring and buffer, and Tubb flat spring stock and with 3 coils cut, with adjustable buffer from 1.5 oz to 5.6 oz. It's not a buffer or spring issue.
Really odd only one that gave me issues were 308s amd cure was drowning in oil. Which you can also try, oil ot to death some. Even lay thin film of axle greese in the bcg rails. Some say the 15 csn be dry but i have a dozen now all from parts and all diff cals. Try and oil slick it. Worst that Can happen as you clean it I clean mine after every outing anyway including stripping the bowl all the way down, on a positive note there’s only a few things that create the problem so try not the stupid stuff first oil grease it’s even a good idea to get it set a readers and look at the bowl of clothes and see if it has any rough machining or birds or what not and see how well it slides for the upper when I have a deep PMS problem I took it to a gunsmith were sad for two weeks and did absolutely nothing said fuck it came home I don’t he’s silly ass possible solutions and low behold in an hour problem solved the reason I say it’s probably not a guessing problem is because that’s everyone’s first excuse and everyone loves to fuck with these gas blocks and everyone seem to think I need adjustables I don’t have one rifle in adjustable block and if you think about it it’s so simple it’s almost silly how they work try and receive the block look for Bluewell where is it might be leaking or actually what am I saying if you’re checking in 4 o’clock it’s not gassing, did you try the one around in the mag trick or utilize several magazines?
I appreciate you're trying to help but that reply hurt my brain.
I addressed all of that earlier in the thread.
Overlubed, lightly lubed, 8 or 10 different mags, etc etc.
I appreciate you're trying to help but that reply hurt my brain.
I addressed all of that earlier in the thread.
Overlubed, lightly lubed, 8 or 10 different mags, etc etc.
The reply system of this page is useless, that was for somewhere else, there are hundreds of similar ones lately, and got crossed in wrong box
After trying several mags and adjusting my buffer weight i had a 10” barrel that wouldnt lock back with super sonic ammo or even super sonic suppressed. The barrel manufacturer said I should be running a stock buffer spring and carbine buffer for the barrel port size. I was running the JP SCS Heavy that i use in all my pistols and 6.8 AR both suppressed and not. After some research I found this manufacturer was using a smaller gas port and wouldn’t guarantee function with my JP SCS. I also tried a JPSCS standard and tried all the spring weights in both. No luck. Finally drilled out the gas port to 0.100” believe (its been a while). Worst case is i run an adjustable gas block if its over sized. Well it ran perfectly in my original configuration both suppressed and not. It would run subsonic supressed, but not lock back in subs not suppressed. Im happy with the outcome.
I rarely use an adjustbpable gas block or atleast not early on. I have more now, but I have SBR’s in 300BO that will run any configuration with no changes and without ADJ gas blocks. Buffer weight and spring combos in JO SCS silent bufffers. Food for thought. Maybe I got a little lucky.
I rarely use an adjustbpable gas block or atleast not early on. I have more now, but I have SBR’s in 300BO that will run any configuration with no changes and without ADJ gas blocks. Buffer weight and spring combos in JO SCS silent bufffers. Food for thought. Maybe I got a little lucky.
Thanks for all the troubleshooting help, I followed all the steps I found here and the problem was a “new style” captured buffer spring being too heavy. Installed mil spec buffer setup and it locks back non empty mag and got gas block adjusted along with a hudu brake and gas virtually no recoil now.
