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Posted: 8/29/2014 4:10:44 PM EDT
[#1]
PICs!!!
It could be a myriad of issues. Get us some good pics of the inside of the lower and upper and a few of the bolt. Right off hand I would check:
I could go on and on. Pics needed... |
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Posted: 8/29/2014 4:22:07 PM EDT
[#2]
Pic would help. Both of feeding issues and the FCG inside the lower.
MAHA |
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Posted: 8/29/2014 4:47:42 PM EDT
[#3]
Yes....we had it back here.....got it running great. I been using my JP lower, CCI blazer, federal match (Even some Remington).
We use BDM's....with the nylon feed lips........I really do think they are better than the steel ones. Only thing I can say is to send it in again......I'll try some different brands, see if we can get not to run Tim |
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Posted: 8/29/2014 6:01:04 PM EDT
[#4]
It's an Anderson lower with Anderson lpk (but have tried it on 3 other lowers, one with cmmg lpk, one with an unknown milspec lpk and one with Cmc trigger, same result with all of them) Taccom bcg, upper and barrel. Taccom pressure plug as well.
I only have the one mag at the moment but was under the impression the steel feed lips were supposed to be superior. I could order a new mag but I'm skeptical of the mag causing ALL the issues. Will take some pics now |
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Posted: 8/29/2014 8:02:00 PM EDT
[#6]
Is the bolt dragging on the bolt catch?
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Posted: 8/29/2014 9:29:45 PM EDT
[#7]
Your hammer is hitting the Recoil tube on the 22 Bolt. You can see the wear marks in the photos, on top of the hammer and on the bottom of the recoil tube. This will cause the hammer not to hit the firing pin will full force so it wont fire.
From the photos it looks like something has hit the bottom on the bolt moving some metal, you can see it in the photo where you are holding the bolt back and showing the Firing Pin. Check that and see if it is causeing drag, this would cause the chambering issues. I also think your hammer spring installed backwards. The legs should come up from the bottom and in the photo the look like they are on top if the Hammer Pin, it might just be the photo. MAHA Quote HistoryQuoted:
<a href="http://s.photobucket.com/user/02blackws679ta/media/Mobile%20Uploads/20140829_170407_zps4c1f7gtb.jpg.html" target="_blank">http://img.photobucket.com/albums/v228/02blackws679ta/Mobile%20Uploads/20140829_170407_zps4c1f7gtb.jpg</a> This is how the majority of rounds load. Every now and then it'll load properly and go into full battery but still no firing. That issue I could see being mag related and I had thought maybe the light primer strikes were the fcg but after trying it on other lowers and knowing taccom had success with a 3.5 lb trigger, I'm still stumped. <a href="http://s.photobucket.com/user/02blackws679ta/media/Mobile%20Uploads/20140829_170604_zps8abpnkfo.jpg.html" target="_blank">http://img.photobucket.com/albums/v228/02blackws679ta/Mobile%20Uploads/20140829_170604_zps8abpnkfo.jpg</a> <a href="http://s.photobucket.com/user/02blackws679ta/media/Mobile%20Uploads/20140829_170615_zpsphryoa8s.jpg.html" target="_blank">http://img.photobucket.com/albums/v228/02blackws679ta/Mobile%20Uploads/20140829_170615_zpsphryoa8s.jpg</a> <a href="http://s.photobucket.com/user/02blackws679ta/media/Mobile%20Uploads/20140829_170640_zpsb3lx3nct.jpg.html" target="_blank">http://img.photobucket.com/albums/v228/02blackws679ta/Mobile%20Uploads/20140829_170640_zpsb3lx3nct.jpg</a> <a href="http://s.photobucket.com/user/02blackws679ta/media/Mobile%20Uploads/20140829_170724_zpsishomg1m.jpg.html" target="_blank">http://img.photobucket.com/albums/v228/02blackws679ta/Mobile%20Uploads/20140829_170724_zpsishomg1m.jpg</a> <a href="http://s.photobucket.com/user/02blackws679ta/media/Mobile%20Uploads/20140829_171501_zps4wl49mca.jpg.html" target="_blank">http://img.photobucket.com/albums/v228/02blackws679ta/Mobile%20Uploads/20140829_171501_zps4wl49mca.jpg</a> Firing pin protrusion <a href="http://s.photobucket.com/user/02blackws679ta/media/Mobile%20Uploads/20140829_171532_zpsuwe7f80m.jpg.html" target="_blank">http://img.photobucket.com/albums/v228/02blackws679ta/Mobile%20Uploads/20140829_171532_zpsuwe7f80m.jpg</a> Cmmg 22 ch <a href="http://s.photobucket.com/user/02blackws679ta/media/20140829_171720_zpsms4cmuh6.jpg.html" target="_blank">http://img.photobucket.com/albums/v228/02blackws679ta/20140829_171720_zpsms4cmuh6.jpg</a> |
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Posted: 8/29/2014 10:17:09 PM EDT
[#8]
Didn't catch the hammer and the tube but you are correct MAHA.
Set up doesn't have a chance to work correctly as is. Dave N |
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Posted: 8/29/2014 10:19:49 PM EDT
[#9]
Can't believe I didn't see that. Bought the lower already built and didn't even notice the springs.
I was wondering about it dragging but can't believe I don't have one lower that wouldn't have that issue. What would be the best remedy for that? Taking a file to some parts? |
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Posted: 8/29/2014 10:46:22 PM EDT
[#10]
Told you pics would help!
And yes, you hammer spring is backwards. I'm thinking you may need to purchase another magazine as that is the only constant against all testing that has resulted in failure.
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Posted: 8/29/2014 10:49:47 PM EDT
[#11]
Quote HistoryQuoted: Can't believe I didn't see that. Bought the lower already built and didn't even notice the springs. I was wondering about it dragging but can't believe I don't have one lower that wouldn't have that issue. What would be the best remedy for that? Taking a file to some parts? So you bought the lower that just happened to match the upper? If you had the lower coated/painted the hammer spring was installed incorrectly at reassembly.
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Posted: 8/29/2014 11:19:27 PM EDT
[#12]
Take your other lowers and color the top of the hammer with a sharpie, fire it a couple of time and look for the sharpie rubbing off. See if it is just that lower or an upper issue.
MAHA |
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Posted: 8/29/2014 11:33:51 PM EDT
[#13]
Quote HistoryQuoted:
So you bought the lower that just happened to match the upper? If you had the lower coated/painted the hammer spring was installed incorrectly at reassembly. Quote HistoryQuoted:
Quoted:
Can't believe I didn't see that. Bought the lower already built and didn't even notice the springs. I was wondering about it dragging but can't believe I don't have one lower that wouldn't have that issue. What would be the best remedy for that? Taking a file to some parts? So you bought the lower that just happened to match the upper? If you had the lower coated/painted the hammer spring was installed incorrectly at reassembly. The lower was bought from and coated by the same person. I never saw the receiver before it was coated or assembled. |
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Posted: 8/30/2014 12:51:57 AM EDT
[#14]
Quote HistoryQuoted:
The lower was bought from and coated by the same person. I never saw the receiver before it was coated or assembled. Quote HistoryQuoted:
Quoted:
Quoted:
Can't believe I didn't see that. Bought the lower already built and didn't even notice the springs. I was wondering about it dragging but can't believe I don't have one lower that wouldn't have that issue. What would be the best remedy for that? Taking a file to some parts? So you bought the lower that just happened to match the upper? If you had the lower coated/painted the hammer spring was installed incorrectly at reassembly. The lower was bought from and coated by the same person. I never saw the receiver before it was coated or assembled. So that hammer is taller than a standard hammer, and just a touch too tall to work properly with the 22 conversion frame assembly. You'll need to take a file or grinder to the top of the hammer, just a few thousandths, until it clears the conversion tube, or replace it with a standard hammer that clears the conversion tube. Backwards hammer spring, as mentioned already, isn't going to help you get reliable ignition, but is not the major source of your failures to fire - that source being the too-tall hammer. |
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Posted: 8/30/2014 9:13:10 AM EDT
[#15]
Good call!!!......didn't see that!!!
Another thing I notice in one of the pics......why is that firing pin sticking out? If I remember correctly, when you sent the upper to us, there was no spring return on the firing pin. I put one in......did you take it out again? If so....put it back in. Tim |
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Posted: 8/30/2014 10:53:52 AM EDT
[#16]
Hammer spring!
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Posted: 8/30/2014 2:31:24 PM EDT
[#17]
Quote HistoryQuoted:
Good call!!!......didn't see that!!! Another thing I notice in one of the pics......why is that firing pin sticking out? If I remember correctly, when you sent the upper to us, there was no spring return on the firing pin. I put one in......did you take it out again? If so....put it back in. Tim I was pushing on it so they could see how far it protruded. |
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Posted: 8/30/2014 3:54:00 PM EDT
[#18]
Took enough material off the hammer that it's not dragging anymore that I can tell. Put some sharpie on the portion where it was dragging until I couldn't get any transfer between the two. Still hit or miss with feeding and still no fire. Going to fix the hammer spring if I can find a punch set here (not at home currently) and see if that'll fix the firing issue.
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Posted: 8/30/2014 4:30:39 PM EDT
[#19]
Hammer spring was definitely the culprit for light strikes. Feel kind of dumb that I didn't even check that from the start but assumed the guy that did the coating and assembly was competent. This is a perfect example of why I normally do all my own work.
Now if I can get it to feed reliably I think I'll finally be content with this thing. Ran about 15 rounds through it but 3 or 4 were malfunctions that had to be cleared. The first round usually jams up but if I manually load it and then load the mag it'll run through them for the most part. Guess I'll order a different mag and see what happens. |
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Posted: 8/30/2014 4:58:14 PM EDT
[#20]
Thanks for the extra sets of eyes and suggestions
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Posted: 8/30/2014 6:36:57 PM EDT
[#21]
Get another magazine...contrary to popular belief, the nylon feed lipped magazines are better than the steel lipped mags. For the x form
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Posted: 8/30/2014 7:42:31 PM EDT
[#22]
Quote HistoryQuoted:
Get another magazine...contrary to popular belief, the nylon feed lipped magazines are better than the steel lipped mags. For the x form Ordered one earlier. Hopefully it feeds better. Thanks again for the help. |
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Posted: 8/30/2014 9:31:43 PM EDT
[#23]
Contact BDM about the steel feed lip mag. They have excellent customer service.
They also had some mags that I believe had follower issues. Dave N |
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Posted: 9/3/2014 11:26:03 AM EDT
[#24]
Quote HistoryQuoted:
Contact BDM about the steel feed lip mag. They have excellent customer service. They also had some mags that I believe had follower issues. Dave N Emailed them last weekend but haven't heard anything. |
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Posted: 9/4/2014 7:07:01 PM EDT
[#25]
Got the new mag. Feeds MAYBE 10% better. Still doesn't feed properly, most of the time the bolt doesn't go into full battery with seems to be the biggest issue. When I can get it to feed correctly I can get a short string of rounds to fire. I got 3 in a row out of one mag.
I don't know what else to do. |
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Posted: 9/4/2014 7:36:20 PM EDT
[#26]
Quote HistoryQuoted:
Got the new mag. Feeds MAYBE 10% better. Still doesn't feed properly, most of the time the bolt doesn't go into full battery with seems to be the biggest issue. When I can get it to feed correctly I can get a short string of rounds to fire. I got 3 in a row out of one mag. I don't know what else to do. I am in the exact same boat with the feeding issue, less than pleased.  Bad batch possibly? When did you order your Taccom kit?
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Posted: 9/4/2014 8:43:11 PM EDT
[#27]
I mentioned it earlier.
From the photos it looks like something has hit the bottom on the bolt moving some metal, you can see it in the photo where you are holding the bolt back and showing the Firing Pin. Check that and see if it is causeing drag, this would cause the chambering issues. If this isnt it . Look in the recoil tube it self. Tell us what it looks like. MAHA |
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Posted: 9/4/2014 8:50:03 PM EDT
[#28]
MAHA, What do you mean by recoil tube? The tube on the top of the bolt that the spring rides inside?
I have one of these too that I haven't had much time to shoot so I am following this discussion with interest. |
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Posted: 9/4/2014 8:51:37 PM EDT
[#29]
Quote HistoryQuoted:
MAHA, What do you mean by recoil tube? The tube on the top of the bolt that the spring rides inside? I have one of these too that I haven't had much time to shoot so I am following this discussion with interest. Yup that is what I am talking about. MAHA |
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Posted: 9/4/2014 8:52:38 PM EDT
[#30]
Quote HistoryQuoted:
MAHA, What do you mean by recoil tube? The tube on the top of the bolt that the spring rides inside? I have one of these too that I haven't had much time to shoot so I am following this discussion with interest. Yup that is what I am talking about. MAHA |
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Posted: 9/4/2014 9:36:15 PM EDT
[#31]
Quote HistoryQuoted:
I mentioned it earlier. From the photos it looks like something has hit the bottom on the bolt moving some metal, you can see it in the photo where you are holding the bolt back and showing the Firing Pin. Check that and see if it is causeing drag, this would cause the chambering issues. If this isnt it . Look in the recoil tube it self. Tell us what it looks like. MAHA Just looked at my recoil tube, thing has so many ridges inside it's almost threaded. I also used a marker to mark multiple points across the bottom of the bolt. The only ones that were affected were the section which pushes the hammer back(which was cocked the entire time) and the bottom of the bolt where it rubbed the magazine follower. I also marked the top of the bolt catch and it was unaffected. |
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Posted: 9/4/2014 9:43:31 PM EDT
[#32]
Quote HistoryQuoted:
I mentioned it earlier. From the photos it looks like something has hit the bottom on the bolt moving some metal, you can see it in the photo where you are holding the bolt back and showing the Firing Pin. Check that and see if it is causeing drag, this would cause the chambering issues. If this isnt it . Look in the recoil tube it self. Tell us what it looks like. MAHA Yes, I mentioned I took enough material off of the hammer that it's not dragging anymore. Nothing is dragging anymore as far as I can tell. The recoil tube looks normal inside. |
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Posted: 9/4/2014 9:48:22 PM EDT
[#33]
Well maybe not, shining a light through it, it does look to have a lot of ridges as well.
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Posted: 9/4/2014 10:33:07 PM EDT
[#34]
Quote HistoryQuoted:
Yes, I mentioned I took enough material off of the hammer that it's not dragging anymore. Nothing is dragging anymore as far as I can tell. The recoil tube looks normal inside. Quote HistoryQuoted:
Quoted:
I mentioned it earlier. From the photos it looks like something has hit the bottom on the bolt moving some metal, you can see it in the photo where you are holding the bolt back and showing the Firing Pin. Check that and see if it is causeing drag, this would cause the chambering issues. If this isnt it . Look in the recoil tube it self. Tell us what it looks like. MAHA Yes, I mentioned I took enough material off of the hammer that it's not dragging anymore. Nothing is dragging anymore as far as I can tell. The recoil tube looks normal inside. 
This is what I was asking about. It looks like something hit it or was dropped. Possibly moving metal. MAHA |
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Posted: 9/5/2014 12:32:59 AM EDT
[#35]
Make sure your charging is in good shape and not bent
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Posted: 9/5/2014 4:53:04 PM EDT
[#36]
Quote HistoryQuoted:
<a href="http://s87.photobucket.com/user/Mahamotorworks/media/22issues.jpg.html" target="_blank">http://i87.photobucket.com/albums/k158/Mahamotorworks/22issues.jpg</a> This is what I was asking about. It looks like something hit it or was dropped. Possibly moving metal. MAHA Quote HistoryQuoted:
Quoted:
Quoted:
I mentioned it earlier. From the photos it looks like something has hit the bottom on the bolt moving some metal, you can see it in the photo where you are holding the bolt back and showing the Firing Pin. Check that and see if it is causeing drag, this would cause the chambering issues. If this isnt it . Look in the recoil tube it self. Tell us what it looks like. MAHA Yes, I mentioned I took enough material off of the hammer that it's not dragging anymore. Nothing is dragging anymore as far as I can tell. The recoil tube looks normal inside. <a href="http://s87.photobucket.com/user/Mahamotorworks/media/22issues.jpg.html" target="_blank">http://i87.photobucket.com/albums/k158/Mahamotorworks/22issues.jpg</a> This is what I was asking about. It looks like something hit it or was dropped. Possibly moving metal. MAHA That's just a notch in the bolt. It was there from the manufacturer so I figured it was supposed to be. 
Better pic |
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Posted: 9/5/2014 4:56:11 PM EDT
[#37]
Quote HistoryQuoted:
Make sure your charging is in good shape and not bent Its the cmmg 22 ch and looks to be in perfect shape. |
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Posted: 9/5/2014 4:57:47 PM EDT
[#38]
Again I really appreciate all the help and suggestions. Hopefully with Y'all's help I can get this thing running properly.
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Posted: 9/5/2014 6:02:33 PM EDT
[#39]
Quote HistoryQuoted:
That's just a notch in the bolt. It was there from the manufacturer so I figured it was supposed to be. That's the clearance cut for removing and installing the extractor pin. |
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Posted: 9/6/2014 12:18:40 PM EDT
[#40]
Just out of curiosity have you used a standard aluminum charging handle. With finish applied to the upper you can see drag marks from the charging handle. With the way the underside of the plastic charging handle is not relieved I wonder if the bolt could be dragging on the charging handle. Swapping charging handles would eliminate one component. It does not take very much drag to impede functioning.
You did correctly install the hammer spring? Are the mag feed lips dragging on the bottom of the bolt. I'd probably try marking the feed lips or the bottom of the bolt with ink. The mag catch might be allowing the seated mag to ride to high. A few thousandths here or there can be very frustrating and difficult to find, but that's all it takes to cause functioning problems. |
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Posted: 9/6/2014 3:52:00 PM EDT
[#41]
Quote HistoryQuoted:
Just out of curiosity have you used a standard aluminum charging handle. With finish applied to the upper you can see drag marks from the charging handle. With the way the underside of the plastic charging handle is not relieved I wonder if the bolt could be dragging on the charging handle. Swapping charging handles would eliminate one component. It does not take very much drag to impede functioning. You did correctly install the hammer spring? Are the mag feed lips dragging on the bottom of the bolt. I'd probably try marking the feed lips or the bottom of the bolt with ink. The mag catch might be allowing the seated mag to ride to high. A few thousandths here or there can be very frustrating and difficult to find, but that's all it takes to cause functioning problems. I will try a standard ch when I get home. I have a Bcm that's actually coated for this build but had already ordered the 22 ch so I figured I'd run the Bcm in another build. Yes I reinstalled the hammer spring correctly which was the first time I actually got the damn thing to fire. It wasn't even close to enough force with it on there backwards. I couldn't see that the feed lips were dragging which was my first thought after it still wasn't running right but I will use a sharpie like I did on the hammer and see if it is making contact. Thanks for the suggestions. |
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Posted: 9/6/2014 5:48:31 PM EDT
[#42]
Quote HistoryQuoted:
I am in the exact same boat with the feeding issue, less than pleased. Bad batch possibly? When did you order your Taccom kit?Quote HistoryQuoted:
Quoted:
Got the new mag. Feeds MAYBE 10% better. Still doesn't feed properly, most of the time the bolt doesn't go into full battery with seems to be the biggest issue. When I can get it to feed correctly I can get a short string of rounds to fire. I got 3 in a row out of one mag. I don't know what else to do. I am in the exact same boat with the feeding issue, less than pleased. Bad batch possibly? When did you order your Taccom kit?Mine that I received today in the mail is not fully going into battery as well. I used a small punch to lightly push the bolt forward into battery and after doing this it will fire, then the next round stops in the same place. It seems as if the chamber might be to tight. With no mag/ammo in place letting the charging handle fly it will go into battery just fine. Tried several black dog mags with cci minimag, and federal bulk pack. My Nordic upper doesn't like Remington gold hp's, but I might try it next. I will be calling on monday to see what they come up with. It might have been a bad batch. 
EDIT: Did some more looking into this. Round drops into chamber freely. Tried a 10rd black dog polymer ramps same result as metal. Tried better mag adapter and S&W mag would not push round from mag, not enough spring power. Tried different charging handle, same result...  Still messing with it, need to try a different lower next.
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Posted: 9/7/2014 1:04:28 AM EDT
[#43]
Quote HistoryQuoted:
Mine that I received today in the mail is not fully going into battery as well. I used a small punch to lightly push the bolt forward into battery and after doing this it will fire, then the next round stops in the same place. It seems as if the chamber might be to tight. With no mag/ammo in place letting the charging handle fly it will go into battery just fine. Tried several black dog mags with cci minimag, and federal bulk pack. My Nordic upper doesn't like Remington gold hp's, but I might try it next. I will be calling on monday to see what they come up with. It might have been a bad batch.
EDIT: Did some more looking into this. Round drops into chamber freely. Tried a 10rd black dog polymer ramps same result as metal. Tried better mag adapter and S&W mag would not push round from mag, not enough spring power. Tried different charging handle, same result... Still messing with it, need to try a different lower next.Quote HistoryQuoted:
Quoted:
Quoted:
Got the new mag. Feeds MAYBE 10% better. Still doesn't feed properly, most of the time the bolt doesn't go into full battery with seems to be the biggest issue. When I can get it to feed correctly I can get a short string of rounds to fire. I got 3 in a row out of one mag. I don't know what else to do. I am in the exact same boat with the feeding issue, less than pleased. Bad batch possibly? When did you order your Taccom kit?Mine that I received today in the mail is not fully going into battery as well. I used a small punch to lightly push the bolt forward into battery and after doing this it will fire, then the next round stops in the same place. It seems as if the chamber might be to tight. With no mag/ammo in place letting the charging handle fly it will go into battery just fine. Tried several black dog mags with cci minimag, and federal bulk pack. My Nordic upper doesn't like Remington gold hp's, but I might try it next. I will be calling on monday to see what they come up with. It might have been a bad batch.
EDIT: Did some more looking into this. Round drops into chamber freely. Tried a 10rd black dog polymer ramps same result as metal. Tried better mag adapter and S&W mag would not push round from mag, not enough spring power. Tried different charging handle, same result... Still messing with it, need to try a different lower next.I have swapped: Lowers Charging handles(3 different ones) Mags(BDM and S&W) Ammo (Remington and CCI) Stripped uppers The feed ramp is nearly a mirror. I cycled the action by hand several hundred times today to see if the parts would "wear in" some, to no avail. I put marker on the bottom of the bolt to see if it was rubbing and all I see is where it resets the hammer. Tomorrow I will take a dial caliper and measure the chamber, but rounds do freely drop into mine as well. I almost wonder if the barrel and the bolt are not lining up properly, causing the round to try to stay at a slight angle, thus causing it to bind? I also noticed when installing the bolt it doesn't slide in all the way. It can easily be made to go in but it sits like this: 
Maybe the bolt is binding? I have never had a build give me as much trouble as this one, actually the rest of them combined haven't given me this much trouble
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Posted: 9/7/2014 3:34:21 AM EDT
[#44]
I had the same problem with mine on feeding. Would hang half way up when feeding the round and you had to push the bolt forward manually. When dropped straight in, the rounds were free and easy going in and out but not when coming from a magazine. I wound up taking the upper off and using a .22 brass cleaning brush on a cleaning rod chucked up in a battery drill to polish the chamber area and back into the feed ramp area of the barrel collar. After doing this it all feeds and cycles reliably now.
may be worth looking into |
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Posted: 9/7/2014 6:16:58 PM EDT
[#45]
Quote HistoryQuoted:
I had the same problem with mine on feeding. Would hang half way up when feeding the round and you had to push the bolt forward manually. When dropped straight in, the rounds were free and easy going in and out but not when coming from a magazine. I wound up taking the upper off and using a .22 brass cleaning brush on a cleaning rod chucked up in a battery drill to polish the chamber area and back into the feed ramp area of the barrel collar. After doing this it all feeds and cycles reliably now. may be worth looking into Thanks for posting that up. I think it is a binding/feeding issue. I tried your brass cleaning brush idea, and made it thru half a mag. Then tried another mag, and still had to push it forward. Then after 2 rds of next mag and maybe 75 to 80 rds total. I have been checking every round to make sure the bolt is all the way foward, and notice the ejector has come off.  Me and my 7 yr old son have searched the grass for over an hour on our knees and I am taking a break before I lose something else 
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Posted: 9/9/2014 6:27:03 PM EDT
[#46]
Quote HistoryQuoted:
Got the new mag. Feeds MAYBE 10% better. Still doesn't feed properly, most of the time the bolt doesn't go into full battery with seems to be the biggest issue. When I can get it to feed correctly I can get a short string of rounds to fire. I got 3 in a row out of one mag. I don't know what else to do. a few suggestions: no magazine in place, chamber empty. pull back & pause/hold the chg-handle. do quick-as-you-can release, does bolt snap into battery, every time, doing above 4-6 times? have you inspected the rod that the recoil spring rides, is it very smooth? any perceptible kinks/oddities about the recoil spring? I'm suspicious that the bolt doesn't go into battery with no mag, it indicates to me that something is rubbing along the path of travel. that may be the guide slots, guide ribs, possible dirt inside the tube the spring/rod fits in? yes, you have a chrome plated/titanium/etc plated bolt, which should be especially friction-free, but something is dragging on the bolt, it looks like, and must be addressed somehow. as others have noted, pic's of upper in a failed state could help further diagnosis. |
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Posted: 9/9/2014 10:26:38 PM EDT
[#47]
Quote HistoryQuoted:
a few suggestions: no magazine in place, chamber empty. pull back & pause/hold the chg-handle. do quick-as-you-can release, does bolt snap into battery, every time, doing above 4-6 times? have you inspected the rod that the recoil spring rides, is it very smooth? any perceptible kinks/oddities about the recoil spring? I'm suspicious that the bolt doesn't go into battery with no mag, it indicates to me that something is rubbing along the path of travel. that may be the guide slots, guide ribs, possible dirt inside the tube the spring/rod fits in? yes, you have a chrome plated/titanium/etc plated bolt, which should be especially friction-free, but something is dragging on the bolt, it looks like, and must be addressed somehow. as others have noted, pic's of upper in a failed state could help further diagnosis. Quote HistoryQuoted:
Quoted:
Got the new mag. Feeds MAYBE 10% better. Still doesn't feed properly, most of the time the bolt doesn't go into full battery with seems to be the biggest issue. When I can get it to feed correctly I can get a short string of rounds to fire. I got 3 in a row out of one mag. I don't know what else to do. a few suggestions: no magazine in place, chamber empty. pull back & pause/hold the chg-handle. do quick-as-you-can release, does bolt snap into battery, every time, doing above 4-6 times? have you inspected the rod that the recoil spring rides, is it very smooth? any perceptible kinks/oddities about the recoil spring? I'm suspicious that the bolt doesn't go into battery with no mag, it indicates to me that something is rubbing along the path of travel. that may be the guide slots, guide ribs, possible dirt inside the tube the spring/rod fits in? yes, you have a chrome plated/titanium/etc plated bolt, which should be especially friction-free, but something is dragging on the bolt, it looks like, and must be addressed somehow. as others have noted, pic's of upper in a failed state could help further diagnosis. OP had a photo of his as the bolt failed to go into battery. Mine is doing the exact same thing. I have it now where it's slightly better, but still not in battery. 
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Posted: 9/10/2014 2:21:54 AM EDT
[#48]
Quote HistoryQuoted:
OP had a photo of his as the bolt failed to go into battery. Mine is doing the exact same thing. I have it now where it's slightly better, but still not in battery. <a href="http://s647.photobucket.com/user/dlxle/media/IMG_20140831_121712_503_zps75a68945.jpg.html" target="_blank">http://i647.photobucket.com/albums/uu196/dlxle/IMG_20140831_121712_503_zps75a68945.jpg</a> Quote HistoryQuoted:
Quoted:
Quoted:
Got the new mag. Feeds MAYBE 10% better. Still doesn't feed properly, most of the time the bolt doesn't go into full battery with seems to be the biggest issue. When I can get it to feed correctly I can get a short string of rounds to fire. I got 3 in a row out of one mag. I don't know what else to do. a few suggestions: no magazine in place, chamber empty. pull back & pause/hold the chg-handle. do quick-as-you-can release, does bolt snap into battery, every time, doing above 4-6 times? have you inspected the rod that the recoil spring rides, is it very smooth? any perceptible kinks/oddities about the recoil spring? I'm suspicious that the bolt doesn't go into battery with no mag, it indicates to me that something is rubbing along the path of travel. that may be the guide slots, guide ribs, possible dirt inside the tube the spring/rod fits in? yes, you have a chrome plated/titanium/etc plated bolt, which should be especially friction-free, but something is dragging on the bolt, it looks like, and must be addressed somehow. as others have noted, pic's of upper in a failed state could help further diagnosis. OP had a photo of his as the bolt failed to go into battery. Mine is doing the exact same thing. I have it now where it's slightly better, but still not in battery. <a href="http://s647.photobucket.com/user/dlxle/media/IMG_20140831_121712_503_zps75a68945.jpg.html" target="_blank">http://i647.photobucket.com/albums/uu196/dlxle/IMG_20140831_121712_503_zps75a68945.jpg</a> Yep looks just like mine... I also noticed when pulling the rounds back out a spot of the lead is shiny, like the bottom of bullet is rubbing/scrapping while traveling into the chamber. And that is with the bolt in the same position you posted, aka the round has even been fully chambered. My collar/ramp stops 1/32-1/16" shy of the chamber and I wonder if there should be a very slight/mild chamfer to make the transition from the ramp to the chamber smoother (looks like a ledge the nose of the bullet would have to jump up over) and since they are 2 separate pieces to compensate for any movement of the collar not being and interference fit.
edited with some pics SBR 4.5" with suppressor "single shot" 
View of "step" between ramp and chamber (pic after using brass .22 cleaning brush in cordless drill which could of "broken/smoothed edge" which started to feed better for 10rds then back to normal misfeeds, then ejector pin came up allowing ejector to come out and is forever lost) 
.22 round after letting the handle fly and bolt not closed by .25-.375" 
And here is a pic of my nordic upper showing ramp to chamber transition 
Pics from CMMG/google search showing ramp to chamber transition 
Thoughts??? Could be a bad batch of ramp collars, or barrel chamfers??? 
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Posted: 9/10/2014 3:17:05 AM EDT
[#49]
Quote HistoryQuoted:
Thoughts??? Could be a bad batch of ramp collars, or barrel chamfers???
None of my chamber adapters has a step between the ramp and the chamber. I can't think of a good reason for a collar to present such. |
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Posted: 9/10/2014 11:06:15 AM EDT
[#50]
I believe that upper is coming back to us so we can get a new extractor in and correct any issues he is having.
We do not support the S&W 15/22 magazines, so you will be on your own for that part.......we will get it to run with BDM's TRANSAM.......you still having issues? tim |
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