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SEQUENCE PROFILE

Bamavol
I would be interested to see a profile chart that shows the pressure, and velocity, plotted against time,from the instant the hammer strikes the primer until the bullet clears the muzzle. It would be interesting to see a revolver, an auto, and a closed breach, like a bolt action. I know this would span only a small fraction of a second. I would guess it would be less than 20 milliseconds. Anyone know if this info is available?
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2 comments

Date Votes
  • cussedemgun
    Bamavol,

    What you ask would qualify for a good doctoral thesis in "balistic engeenering".

    google 'interior ballistics pressure curve'

    one hit is http://en.wikipedia.org/wiki/Internal_ballistics

    About 3/4 the way down the page are some burn rate graphs, is that you are looking for?

    There are other sights with formulae etc. for plotting the particular caliber/bullet you are interested in, but it gets too math heavy for me to care.

    Pure science & math only get you close. Many variables can not be calculated, such as friction differences from one barrel to the next.

    I like to shoot, so if a simple calculation would replace working up a load the old fashioned way - - look at all the fun I'd miss!

    Jim
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  • Bamavol
    Thanks for the reply. Your link was just what I was looking for.
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