Pennsylvania Firearm Owners Association
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  1. #11
    Join Date
    Mar 2007
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    Folsom, Pennsylvania
    (Delaware County)
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    Default Re: Cleaning AR barrel with stainless steel brush

    Quote Originally Posted by Will3212 View Post
    Side pressure shouldnt be higher compared to a copper bullet going through at 3000fps right.
    Once the bullet engraves rifling, side pressure is pretty low, and it is metal softer than steel. But I will confess I don*t have hard data.

  2. #12
    Join Date
    Oct 2009
    Location
    Chalfont, Pennsylvania
    (Bucks County)
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    Default Re: Cleaning AR barrel with stainless steel brush

    Stainless brushes will often scratch the shit out of barrel steel. Hard chrome barrels will probably take it without a problem- at least for a while.
    Nitride barrels probably will too but why risk it? bronze is all you need.
    Crusader's local #556 South Central Asia chapter

  3. #13
    Join Date
    Mar 2010
    Location
    Narvon, Pennsylvania
    (Lancaster County)
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    62
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    Default Re: Cleaning AR barrel with stainless steel brush

    I cant imagine the amount of force used to push the chamber brush through the bore, one should know in an instant they are doing something wrong. Pro tip..next time use only the first section (with the handle) of the USGI cleaning rod or a pistol length rod when using the chamber brush

    I would not worry, If you think the bore is scratched try some brownells bore lapping compound, or I have used 0000 steel wool ( wrapped around a bronze brush) and lapping compound on some very rough milsurp bores with good results to shine up the roughness

  4. #14
    Join Date
    Jun 2012
    Location
    Honesdale, Pennsylvania
    (Wayne County)
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    693
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    2990182

    Default Re: Cleaning AR barrel with stainless steel brush

    This is the exact star chamber brush I used.
    Not sure if the white bristles are bronze or steel.
    https://www.amazon.com/dp/B08H5PVTFY...xpY2s9dHJ1ZQ==

  5. #15
    Join Date
    Jul 2013
    Location
    Mohnton, Pennsylvania
    (Berks County)
    Posts
    7,194
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    Default Re: Cleaning AR barrel with stainless steel brush

    Quote Originally Posted by Will3212 View Post
    I have a question about cleaning the AR15 barrel.
    I have this chamber brush
    https://www.amazon.com/gp/aw/d/B000E59A8E#Ask

    It has steel bristles at the end for the locking lugs and a bronze brush in front.
    I had this on a bronze cleaning rod and accidently put it through the barrel chamber to muzzle once.
    Now I'm worried if I damaged the barrel.
    It's an FN CHF chrome lined barrel.
    Will a stainless steel bristle brush meant for the locking lugs damage/scratch the inside of barrel if passed through once?
    Accidentally? Really. I would have guessed determination,, steadfast fortitude and a never quit attitude.
    The Gun is the Badge of a Free Man

  6. #16
    Join Date
    Mar 2007
    Location
    Folsom, Pennsylvania
    (Delaware County)
    Posts
    2,147
    Rep Power
    21474856

    Default Re: Cleaning AR barrel with stainless steel brush

    Quote Originally Posted by Will3212 View Post
    This is the exact star chamber brush I used.
    Not sure if the white bristles are bronze or steel.
    https://www.amazon.com/dp/B08H5PVTFY...xpY2s9dHJ1ZQ==
    Yes, they*re stainless steel. Honestly, the deed is done. Nothing you can do about it now. Go shoot your rifle and forget about it.

  7. #17
    Join Date
    Jan 2016
    Location
    Pittsburgh, Pennsylvania
    (Allegheny County)
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    Default Re: Cleaning AR barrel with stainless steel brush

    There is no way to get a chamber brush through the barrel without a hammer.

  8. #18
    Join Date
    Jun 2012
    Location
    Honesdale, Pennsylvania
    (Wayne County)
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    693
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    2990182

    Default Re: Cleaning AR barrel with stainless steel brush

    Quote Originally Posted by DukeConnor View Post
    There is no way to get a chamber brush through the barrel without a hammer.
    Didnt use a hammer.
    I sprayed Ballistol down the barrel 20 minutes before pushing it through.

    The bristles bend backwards when they reach the barrel. When the brush got out all the steel bristles were bent facing backwards.

  9. #19
    Join Date
    Sep 2011
    Location
    Mt. Pleasant
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    Default Re: Cleaning AR barrel with stainless steel brush

    Chock it up to a learning experience and move on. A scratch in the bore from cleaning supplies isn't going to make it unsafe, honestly you won't even notice any accuracy difference.

  10. #20
    Join Date
    Dec 2017
    Location
    On the bypass,, Pennsylvania
    (Bucks County)
    Age
    37
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    310
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    9046867

    Default Re: Cleaning AR barrel with stainless steel brush

    I am shocked you got that thing through the barrel honestly. I've had to get creative with oversized patches before.

    Probably didn't do anything terribly serious though unless you're a talking some uber high end long range precision barrel. As others said, chf/ chrome or nitride you likely won't notice a difference shooting. It'll just get dirty a bit quicker.

    99 bucks will get you a shooter and 250 bucks will get you one hell of a barrel though, so don't sweat it too hard. They're made to be replaced.
    To disarm the people...[i]s the most effectual way to enslave them."

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