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Thread: JB paste

  1. #1

    JB paste

    Hi guys


    I've recently bought a tub of JB paste to clean out ingrained deposits from inside barrels

    its a lapping paste so not something you would use as part of your regular cleaning regime, probably only recommend it's use one a year to bottom out the deposits in a well used barrel


    use the compound in a patch with a little bit of light machine or gun oil, best way to use it Is to rod the first four inches of your barrel ten times then rod 8" of the barrel keep going further into the barrel from your breech to the muzzle meaning the breech end will be rodded 70 strokes and the muzzel end would have been rodded 10 times

    you will not believe how much muck will come out of your barrel, best bet is to clean your barrel first using your normal barrel cleaning regime then clean it out using the JB paste you won't believe the results


    hope this is of some use to you guys


    lee

  2. #2
    Would be useful to know where you bought it - was it a UK stockist?
    I can only find it on Brownells.

  3. #3
    I've been using JB Bore paste for 40 years. It really works well. My brother-in-law used it on his .222 once a week: it's still a tack driver.~Muir

  4. #4
    Quote Originally Posted by Muir View Post
    I've been using JB Bore paste for 40 years. It really works well. My brother-in-law used it on his .222 once a week: it's still a tack driver.~Muir
    Hi Muir.
    If you shot your barrels in when new you would not need to use JB paste quite so much .

    On a serious note. To those who have not used it the stuff turns black when being used. Do not keep applying more paste thinking your barrel is really dirty and you need to keep going.

    Yorkie.

  5. #5
    Like Muir, I have used it for a number of years (well 50% of the time Muir has used it !) Usually after 50 to 70 firings. One thing I do not do is let the patch with JB exit the barrel (crown worries) - use a rod stop thingy so the patch stops a centimetre short of the muzzle.

  6. #6
    Just wait for his ad in the for sale section.
    A young man who isn't a socialist hasn't got a heart; an old man who is a socialist hasn't got a head.
    I have summat for sale; here's the M̶i̶d̶w̶a̶y̶ Brownells UK price... effin jokers.
    "The .30-'06 is unstable at close range" - Ahahahahhahh!


  7. #7
    Quote Originally Posted by PeterH View Post
    Like Muir, I have used it for a number of years (well 50% of the time Muir has used it !) Usually after 50 to 70 firings. One thing I do not do is let the patch with JB exit the barrel (crown worries) - use a rod stop thingy so the patch stops a centimetre short of the muzzle.
    What worries you?

  8. #8
    Quote Originally Posted by PeterH View Post
    Like Muir, I have used it for a number of years (well 50% of the time Muir has used it !) Usually after 50 to 70 firings. One thing I do not do is let the patch with JB exit the barrel (crown worries) - use a rod stop thingy so the patch stops a centimetre short of the muzzle.
    Each to his own but if Iíve need to use JB I donít put it on patches but rather on a suitably sized piece of cloth as wrapped around a PH jag and then stroked up and down the bore without exiting.

    As an aside donít make the mistake of thinking you need to keep applying a fresh blob of compound to a patch until one exits the barrel clean as youíll still be at it in 2020.

    K

  9. #9
    Quote Originally Posted by leebut View Post
    Hi guys
    I've recently bought a tub of JB paste to clean out ingrained deposits from inside barrels

    its a lapping paste so not something you would use as part of your regular cleaning regime, probably only recommend it's use one a year to bottom out the deposits in a well used barrel

    you will not believe how much muck will come out of your barrel, best bet is to clean your barrel first using your normal barrel cleaning regime then clean it out using the JB paste you won't believe the results
    hope this is of some use to you guys
    lee
    It's not lapping paste. JB Bore paste is harder than copper but softer than steel, so it will not lap your barrel. JB paste is intended to remove excessive copper fouling. It needs to be used with a tight fitting patch so that it gets into the corners of your lands. The proper way to use it is to stroke the entire length of the bore in either direction. One curiosity of JB paste is that it is a light brown, but the moment you put it through the barrel it turns black. This is a reaction, with the steel I presume, it isn't a load of black muck being removed from your barrel. Even if you put JB paste through a spotless barrel, it turns black. If you clean you barrel regularly with a proprietary bore cleaner, one that removes copper, you really won't need JB Bore Paste. I use it once in a blue moon, which is an annual event :-) just because.

    -JMS

  10. #10
    I occasionally use JB paste on a patch wrapped round a nylon brush to reach into the corners of the rifling but only occasionally for a deep clean, correct cleaning with good solvents should generally be enough.
    Right where's those stones , I'll start !

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