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Old March 17, 2018, 14:22   #1
Nathaniel01
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Bula M14 build failing to extract...

& bends the case rim. Bolt goes back & picks up the next round, pushing it up to the stuck case. Tapped two empties out and they are stuck pretty good.
Help Art!
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Old March 17, 2018, 14:49   #2
ArtBanks
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Knock it out and polish the chamber.
What ammo?
I have had both ZQI and Malasian get stuck in chambers. Flex hone on all my .308 barrels solved the problem.



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Old March 17, 2018, 17:50   #3
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It's Magtech .308 made in Brazil. I'll try a few other brands, but I try to use the Magtech for administrative chores.

Just checked out Flex-Hone video on their website. Thanks for letting me know about it. What length and grit did you use?

Last edited by Nathaniel01; March 17, 2018 at 18:01.
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Old March 17, 2018, 18:44   #4
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.308 12" 800SC.
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Old March 17, 2018, 18:53   #5
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Out of curiosity, what barrel is on It?
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Old March 17, 2018, 19:25   #6
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Bula GI profile 18 or 19"
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Old March 19, 2018, 17:44   #7
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Can the Flex-Hone be used with the barrel installed?
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Old March 20, 2018, 04:53   #8
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Sure can. I turn the stripped rifle upside down and run the flex-hone under the safety bridge and into the chamber. Follow the directions and use plenty of cutting oil and keep the drill moving. Try not to hit the neck area. I think you will be amazed how simple an operation this really is.
Doesn't take much to clean up even the nastiest of chambers.
I started using one on an FAL that I was having extraction problems on. Took about 20 seconds to clean it right up.

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Old March 20, 2018, 10:47   #9
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Thanks for the recommendation and tips! Looks like lots of .308s will now get a chamber polish.
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Old March 20, 2018, 13:13   #10
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I am looking forward to your opinion on the device. So simple and effective.
I noticed no more bent extraction rims on my brass after using this tool.

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Old March 20, 2018, 13:14   #11
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Quote:
Originally Posted by ArtBanks View Post
Sure can. I turn the stripped rifle upside down and run the flex-hone under the safety bridge and into the chamber. Follow the directions and use plenty of cutting oil and keep the drill moving. Try not to hit the neck area. I think you will be amazed how simple an operation this really is.
Doesn't take much to clean up even the nastiest of chambers.
I started using one on an FAL that I was having extraction problems on. Took about 20 seconds to clean it right up.

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Art
Hey Art, ever use this on a fluted chamber; Cetme or G3? Had a case from the current Malaysian ammo get stuck in my Cetme this weekend. Was able to pogo it out but would give this a shot if it's been done successfully.
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Old March 20, 2018, 13:53   #12
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Never used one on a barrel that was fluted on the inside only the outside.
I suppose if you ran it slow it would work.
Only ever had one rifle on my range with a fluted chamber and the gent got rid of it after shooting one of my M14s.
Seems to me his rifle was made right here in CT. I think is was PTL or something like that. A copy of some European stamped piece of junk.

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Old March 21, 2018, 12:52   #13
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Originally Posted by ArtBanks View Post
Never used one on a barrel that was fluted on the inside only the outside.
I suppose if you ran it slow it would work.
Only ever had one rifle on my range with a fluted chamber and the gent got rid of it after shooting one of my M14s.
Seems to me his rifle was made right here in CT. I think is was PTL or something like that. A copy of some European stamped piece of junk.

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Art
Thanks Art,

Probably a PTR; a clone of the German HKG3. Not bad rifles, they'd compete favorably with a standard M1A for accuracy, but damn, they get dirty due to the blow-back roller lock design and maintaining bolt gap requires periodic parts replacement.

Apologies to the OP for hijacking this thread.
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Old March 21, 2018, 13:30   #14
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Doesn't look like they ship in the handy storage tubes anymore.

Art, when did you acquire yours and did you get them direct from brush research?

http://www.brushresearch.com/brush-types.php?c1=4
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Old March 21, 2018, 13:48   #15
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Over a year ago and I think probably Amazon. Just easy that way.
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Old April 06, 2018, 17:29   #16
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Just used the chamber honing brush from BRM. It came in the cardboard tube. Also got a quart of their honing oil. Tried it in a FAL first to get a feel for it, followed their directions and used it with a new Dewalt DCD996 on speed setting 3. Churched upper in a padded vise. Honed for about 40 seconds, stroking the brush in & out & rotating while inserting & removing. Rinsed per instructions with soapy water, blew out with air, sprayed aerosol Rem Oil and blew out with air.

Repeated process for Bula M14 but honed for 30 seconds. Checked chamber with bright 5o'clock sun and still noticed small perpendicular tool marks in chamber, honed another 20 seconds. Still a large perpendicular tool mark, but didn't want to over-hone until function test. Fired one round with mag, ejected and locked back on empty mag
5 more rounds ran like a scalded dog.

Brass does have some light banding, can see it but not really feel it. I'm happy the rifle works. This tool will probably fix a lot of troublesome rifles with tight chambers.

Can't wait to fire the FAL and see if the rim bending goes away.

Thanks Art for the recommendation, you got my build running!

It looks like the matte grey is gone from the abrasive material on the brush. What do you think the lifespan of a brush is?
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Old April 06, 2018, 19:09   #17
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Got a dozen chambers done with the one I am using and it is showing no signs of wear yet. Using the 800 gr, you would have to run it for a long time to change the chamber very much. All I like to do is take the rough edges off and let the rifle do the rest in normal service.

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Old April 06, 2018, 19:24   #18
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Have you had any brass with the banding? Trying to figure out if I did something wrong.
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Old April 07, 2018, 06:14   #19
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How about a photo. Don't have anything I would describe as banding on any of mine.
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