GUN How do you distinguish copper fouling vs rust

Discussion in 'On Topic' started by GlobeGuy, Jun 3, 2008.

  1. GlobeGuy

    GlobeGuy New Member

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    Anything you can do to distinguish between those two in a barrel?
     
  2. JRMS

    JRMS Failing at life

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    Copper fouling turns green.
     
  3. SNDP

    SNDP New Member

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    Location:
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    edit
     
  4. Goat

    Goat That crack is really moreish

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    Run an ammonia based copper cleaner through the bore, the patch should come out with a blue/green tinge to it.

    Rust just comes out rust colored.
     

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