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Pressure calculation and wall thickness

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    Pressure calculation and wall thickness

    I’ve seen old revolvers with very thin cylinder wall thickness, like these for example https://www.kirstkonverter.com/ruger...converters.gif

    Back in the days the quality of the steel was inferior, so it got me to wounder about the steels of today.

    What’s the minimum thickness of a chamber in cal .40 containing a 25-30 grain FFFG black powder (or equivalent pyrodex P) load with a 92 grain lead roundball tightly infront of it (+wadding) if it’s made of a steel with following properties:

    Yield strength min [MPa]
    700

    Tensile strength [MPa]
    900-1050

    Elongation A5 [%]
    12

    Hardness
    270-325 HB

    And how many PSI will such a load described above generate?

    #2
    I know quite a bit about this subject but I think I will send you to the experts.

    https://www.muzzleloadingforum.com
    In memory of our Founder, Michael T. June 15, 1946 - February 26, 2017

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      #3
      I dont think there is one answer but mabe a range of opinions since such things as a different safety factor will affect the size.

      Sent from my SAMSUNG-SM-G930A using Tapatalk

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        #4
        Welcome to the forum Cal,45. You came to the right place & looks like you got the info you need.
        Think Green.......Recycle Congress

        Certified Armed Infidel

        Right Wing Extremist

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