 8Thanks -
 1 Post By deces -
 1 Post By AR 50 BMG -
 1 Post By Ted Brown -
 1 Post By MemphisMachinists -
 1 Post By BLACKTAIL 8541 -
 1 Post By Rawnerves -
 2 Post By Gus Fisher
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February 17th, 2012, 04:24 PM
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#1 | | Platoon Commander
Join Date: Nov 2006 Location: Im ova here!
Posts: 550
| Feed Ramp flaw
Should I be concerned with what appears to be a chip in the FR on the left of this Criterion CL med weight Barrel. The rifle has about 100 rounds through it and was assembled new by LRB in November!
Thanks
Last edited by dcobra823; February 18th, 2012 at 05:39 AM.
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February 17th, 2012, 04:33 PM
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#2 | | Squad Leader
Join Date: Oct 2010 Location: USA
Posts: 276
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It doesn't look too bad to me, I don see how at any time the cartridge would come in contact with that spot.
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February 17th, 2012, 04:36 PM
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#3 | | Rifleman
Join Date: Aug 2011 Location: OH
Posts: 67
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just my opinion!
i wouldn't worry as long as it's functioning fine.
it looks to me like a burr un the edge of the ramp and a piece of it has ben knocked off.
i would take a knife and scrape the edge to see if it is a burr.
again just my opinion!!
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February 17th, 2012, 04:36 PM
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#4 | | Lifer
Join Date: May 2004 Location: Jacksonville, OR
Posts: 3,107
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No, you should not be concerned. The edge of the feed ramp often has a burr left from machining. You'll note that it is inset from the face of the receiver so this area does not contact the bullet when chambering a round.
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February 17th, 2012, 05:00 PM
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#5 | | Old Salt
Join Date: Dec 2009 Location: Memphis Tenn
Posts: 1,335
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Looks to me like the feed ramp was cut too deep. I think I see the reciever showing thru where the feed ramps are breaking out. It looks to be similiar on both of them, maybey moreso on the right side. I would not be happy with this myself. Post more picture for clarity please.
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February 17th, 2012, 05:16 PM
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#6 | | Platoon Commander
Join Date: Nov 2006 Location: Im ova here!
Posts: 550
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The flaw seems to have a slight burr on the left side.
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February 17th, 2012, 05:23 PM
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#7 | | Platoon Commander
Join Date: Nov 2006 Location: Im ova here!
Posts: 550
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This is my Criterion Barreled Tanker mint with 800+ rounds through her!
Last edited by dcobra823; February 18th, 2012 at 05:40 AM.
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February 17th, 2012, 06:05 PM
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#8 | | Old Salt
Join Date: Dec 2009 Location: Memphis Tenn
Posts: 1,335
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Macro setings of the camera make it look huge. I think right side is a litlle deep, but probably not as bad as it first looked to me.
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February 17th, 2012, 06:35 PM
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#9 | | Platoon Commander
Join Date: Nov 2006 Location: Im ova here!
Posts: 550
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I think it not as bed as it looks. I'm gonna put a new 18.5 Barrel on it soon anyway. I'm not too fond of the 22". I think I'm an 18.5" Barrel junkie 
Thanks for the Help
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February 17th, 2012, 06:36 PM
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#10 | | Old Salt
Join Date: May 2006 Location: Northern CA
Posts: 1,201
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While it does not look good, it is nothing to worry about.
If you are worried about it, you could use a cratex tip on a dremel to debur it.
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February 17th, 2012, 08:26 PM
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#11 | | Old Salt
Join Date: Dec 2009 Location: Bellflower CA.
Posts: 1,982
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If your really worried just chamber a few rounds without firing them, extract and check for any serious damage to the bullet and/or casing. This should be done at the range by firing one round and extracting the next and so on. Then you will be able to see any damage that might be caused by this flaw. If you have no damage (or very little scrape marks or tiny dings) then your good to go. If the damage is substantial then you may have to do some work on it. How much damage is too much? I don't know I just kind of play it by ear, or post the damage here in the forum to get further advice. I have had to make adjustments to my feed ramps in the past to get to a point that I was satisfied with. I don't like too many scratches, scrapes, and/or dings being put on my rounds during the chambering process.
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February 17th, 2012, 08:48 PM
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#12 | | Platoon Commander
Join Date: Nov 2006 Location: Im ova here!
Posts: 550
| Quote:
Originally Posted by Rawnerves  If your really worried just chamber a few rounds without firing them, extract and check for any serious damage to the bullet and/or casing. This should be done at the range by firing one round and extracting the next and so on. Then you will be able to see any damage that might be caused by this flaw. If you have no damage (or very little scrape marks or tiny dings) then your good to go. If the damage is substantial then you may have to do some work on it. How much damage is too much? I don't know I just kind of play it by ear, or post the damage here in the forum to get further advice. I have had to make adjustments to my feed ramps in the past to get to a point that I was satisfied with. I don't like too many scratches, scrapes, and/or dings being put on my rounds during the chambering process. | Now this was sound advice and a heap of knowledge.
Thank you sir
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February 17th, 2012, 09:13 PM
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#13 | | Lifer
Join Date: Aug 2008 Location: Oregon
Posts: 2,716
| My two brand new Krieger 18.5" barrels had this also. I de-burred them because it bugged me. I swear I have OCD or something. It would be nice if the manufacturer just cleaned them up before shipping out.
It would not have affected the function at all though.
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February 17th, 2012, 09:35 PM
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#14 | | MGySgt USMC (ret)
Join Date: Nov 2008 Location: Virginia
Posts: 4,558
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I think by now it is pretty clear I do not have any connection with LRB. Having said that, this is a minor barrel esthetics flaw done in the barrel manufacturing process. I would try to clear the burr with a small bearing scraper or file and follow with a bullet pointed cratex polishing point. Once the burr is gone, there is no need to be concerned about it at all.
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