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Thread: how long co2

  1. #1
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    Question how long co2

    how long can/should you leave a co2 cartridge in a pistol?

  2. #2
    harvey_s's Avatar
    harvey_s is offline Lost love child of David Niven and Victoria Beckham
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    Now I always thought leaving them for any length of time was best done un-pressurised.

    However, since owning a Crosman 600 - where a few respected people have informed me that the gun is best preserved when left pressurised, I have good reason to query my own previously held beliefs...

  3. #3
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    I always leave them in on every gun I own, I've never replaced a seal.

    I have 22 CO2 Pistols, some well into their second decade of use, I had more and some older ones but some were sold on and my Original Umarex PPK/S recently gave up due to metal fatigue in the frame, the seal was still fine and spent most of it's life with a CO2 bulb pressed up against it.

    I am sure that most of the CO2 eventually will leak out, but my view is that constantly removing CO2 does far more damage to the seal that leaving it in. This is far worse when there is even a small amount of gas left in the bulb, removing the bulb releases the pressure making the seal expand, the escaping gas freezes the seal causing the seal to try and contract because of the lower temperature. Mechanical expansion and contraction due to temperature drop happening at the same time is what messes seals up.

    Others may disagree, these are my observations of the many guns I have owned since CO2 came off ticket.
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  4. #4
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    I guess owning 22 pistols and no problem with the cartridges left in is good enough for me. thanks for the reply

  5. #5
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    If the co2 capsule empties into a pressure tube I leave it in.
    If the co2 capsule presses on a seal eg Umarex I don't.

    Seems to work.

  6. #6
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    My brother recently bought an Umarex S&W revolver off my dad and he had left a co2 cartridge in there for what must have been 6-8 years and it still seals perfectly well. I dont see how you could possibly damage a rubber seal by leaving a cart in there.

  7. #7
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    +1 for leaving them in.

  8. #8
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    Yeah each to there own on this, people have different views on it..

    I for one never leave a 12g CO2 capsule in any of my guns for longer then 24 hours, but I tend not to ever leave one in, because from my experience it has caused damage compressed seals..

    ATB Marc
    Some of my favourite guns in. You collection, Umarex Beretta 92fs - Colt Custom 1911 - Walther Lever Action - TM Hi-Capa Custom Build Project - Colt SAA .45 & many more..

  9. #9
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    I have bought a few pistols that have had capsules in them 'for years.'
    Most of them won't hold gas.

    That said I have only had one Umarex with a duff capsule seal and that was bought empty.
    And I've had a few.

    What I have discovered is that you need to use Co2 guns to keep them on form.
    That is why my bedroom is full of co2 in winter.

    Fart jokes expected!

  10. #10
    harvey_s's Avatar
    harvey_s is offline Lost love child of David Niven and Victoria Beckham
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    Quote Originally Posted by gingernut View Post
    If the co2 capsule empties into a pressure tube I leave it in.
    If the co2 capsule presses on a seal eg Umarex I don't.

    Seems to work.
    This seems very logical and is probably the best answer.

  11. #11
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    Not entirely my own idea.
    Guided by my friend Baz -Benelli something on here.

  12. #12
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    Leave them in.
    On PCP and multipump guns everyone knows that the seals need to be held under pressure to keep them working.
    CO2 is not fundamentally any different, it's just a compressed gas.

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