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Posted: 7/10/2017 6:25:03 PM EDT
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I am trying to identify the cause of the failure to feed problem with my rifle.
When the FTF first occurred, I did not realize what had happened so when I pulled the trigger the round failed to fire. When I examined what had happened I saw that the the bolt did not go fully into battery. I extracted the round and saw this: (To see the photo, right-click on the icon or link then select "Open in a new tab". This opens the mediafire.com page for my photos - click "View" to display the photo) http://www.mediafire.com/file/9bs1t9o1tzbnzdh/Cartridge_Damage_%231_%282%29.JPG When comparing the damaged cartridge with a good cartridge, is saw this: http://www.mediafire.com/file/25vs1m2f17i4ofa/Cartridge_Damage_%233_%283%29.JPG The ammo is Wolf Gold .223 Rem. The rifle is a Anderson Manufacturing AM15. The customer service person at Anderson Manufacturing is implying that the ammo is the problem and said try using "American manufactured 5.56 NATO ammo" and "[T]his is the ammo that is designed for the rifle and what we base functionality on." Any ideas? Thanks in advance for any advice. |
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Ammo makes a big difference.
Wolf Ammo is UNDERPOWERED JUNK. New guns need to be broken in before they become reliable (a minimum of 200-500 rounds of US made M855). You can kickstart the break-in process by NOT LUBRICATING the BCG (bolt carrier group) or the upper receiver, and dry cycling the action using the charging handle 500 times (pulling the BCG back and letting the buffer spring close the action). During the dry cycling process, you will be able to feel the difference as the parts start to break into each other, and the sliding surfaces get used to working together. Then, wipe the upper receiver and bcg parts with a oily rag, and lubricate the parts normally. Not need to drown the parts in oil. This thread is worthless without visible photos. Could be the underpowered ammo, as person from Andersen stated, or the problem could be lack of break-in, improper assembly, or could be a bad magazine. |
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He said wolf gold. It's real stuff.
What magazines are you using? Try some pmags or usgi. Make sure the rifle is cleaned/lubed. Nothing special here, don't need secret sauce lube, just not packing grease. Look up pics of properly aligned feed ramps and barrel extension/receiver combo (feed ramp) pics. Make sure you have the correct barrel extension for the upper, and that it's aligned properly. IME 99% of failure to feed is magazine related, either old/worn mags, or cheap junk mags. I didn't look at the pics, but it is totally normal to have the cartridge smashed/bent in a ftf. I assume the pic shows 2 dimples on the shoulder of the case where it crashed into the barrel extension (locking lugs). |
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No photos are showing up, but lets run through the basics,
Make sure to use CLP to clean the "rig", including the chamber with a chamber brush and CLP as well. This will remove all the storage grease that is used to prevent the parts from rusting long term storage. Once the rifle has been de-greased, then you need to apply a light coat of fresh CLP to the upper receiver bearing areas, as well as the inside of the buffer tube and the buffer/recoil spring. Now for the first round on the cleaned rig, only a single round in a mag, insert the mag and charge the round, and with the emtpy mag still in the mag well, the bolt should lock back on the mag catch once that only round is fired. Hence this first step needs to be taken to make sure that the B/C if fully stroking from the start. With this out of the way, and the rifle correctly stroking, then we can get into if the mag is being retained high enough in the well, as well if the mag is feeding the rounds correctly. Also to point out, when you are first cleaning the rig, make sure to pull the mags apart and give them a good CLP too!!!! And yes, even brand new mags, since they tend to be over greased with assembly debries when being assemblies. If you still have problems, then you need to post you photo's in a way that they will show up on the site. |
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