Anvil Shooting

Discussion in 'General Firearm Discussion' started by raindog, Oct 22, 2009.

  1. raindog

    raindog
    Portland, OR
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    http://www.youtube.com/watch?v=IhQ4dE_RGnQ


    I like it ;-)

    I was looking at that and thought...you know, that's not much powder for what he's moving.

    Looks to me like he poured in half a can of blackpowder - maybe a half pound. 1 pound = 7000 grains, so about 3500 grains.

    To take a load I'm familiar with, a 168gr .308 bullet is often moved with about 42 grains of powder (granted, it's not the same formula but we're talking rough numbers here). That's a 21:1 weight:powder ratio.

    In this case, he has a 200# anvil (200*7000=) or 1.4 million grains on top of 3500 grains. That's a 400:1 weight:powder ratio. Even if he used a full pound of powder, that's still 200:1.

    I'm guessing that the heavy weight of the anvil keeps the reaction contained for a longer time, allowing pressure to build very high. The pressure letoff has to be very immediate - the moment the top anvil lifts, the entire reaction is exposed and containment is lost in all directions (unlike a gun's barrel, where the reaction can only vent in one direction). So it must all just be that initial pressure containment, largely due to the top anvil's weight.

    Well, that's my amateur speculation.

    http://everything2.com/title/anvil+shooting
     
  2. jimwsea

    jimwsea
    Vancouver, Washington state
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    Now lets see it at night with tracer powder.....
     
  3. 56kninja

    56kninja
    Portland
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    That was awesome. Anvil shooting is the greatest thing ever. It's amazing what you can do with metal and gun powder..
     
  4. chiefchip

    chiefchip
    Rainier, Oregon
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    That was awsome thanks
     
  5. numbnutz

    numbnutz
    molalla
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    Thats spectactular,love it! Now I wanna try it
     
  6. BooKilla

    BooKilla
    Portland, OR
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    What the bubblegum....












    ...that was awesome
     

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