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Thread: HPA and Co2 mix- someone around here somewhere has done this...

  1. #51
    Junior Member
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    Fri Sep 7 2012
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    14
    Shot about 50 shots, pressure at 110bar 19 cel and so weighed it at 1029.6 grams.......
    Weight loss from CO2 consumption likely......

  2. #52
    Moderator rsterne's Avatar
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    Wed Dec 7 2011
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    Coalmont, BC
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    5 grams isn't a lot of weight.... 22.4 L of air weighs 29 grams, and 22.4 L of CO2 (gas) weighs 44 grams (at 1 bar).... At 100 bar, 29 grams of air would occupy 0.224L = 224cc.... A Hatsan AT44 (short) tank is 180cc, so if filled with HPA to 200 bar, the air would weigh 29 x 180 x 200 / 22400 = 47 grams.... The 5 gram weight loss for 50 shots could be air or CO2, or a combination of both.... you would need a very accurate pressure gauge, and exactly the same temperature before and after shooting, to tell....

    Bob
    Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
    Airsonal: Too many to count!

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