Weaponized Silly Putty: But Will it Still Copy the Funnies?

A little less lethal (probably), non-Newtonian fun. Don’t try this at home, kids. [h/t thegunwire.com]


  1. avatar Rich says:

    Anything worth doing is worth overdoing. The action starts at 1:50.

  2. avatar Greg Camp says:

    How did they chamber the shell without getting the putty in the works? Shotgun shells typically don’t have the slug or pellets sticking out the front end. That being said, F = mv. The difference here is that the putty wouldn’t hold together to penetrate a resistant material.

    1. avatar Moonshine7102 says:

      Pretty sure they were single-loading them. Also, momentum = mv. F = ma.

      1. avatar cmdrlimpet says:

        Dang, beat me to it!

    2. avatar great unknown says:

      non-Newtonian liquid [e.g., silly putty] = stiffens up under stress. That’s why it demolished the tv screen and came out the back. It might just penetrate resistant materials more easily than you expect.

    3. avatar C. Walther says:

      These are the same guys who melted Crayolas crayons into wax slugs and went to town. That was a fun video. (First two minutes are how to make them; second two, what they can do).

  3. avatar jwm says:

    The beauty of a smooth bore. If it’ll fit, it’ll fly. I always heard that silly putty was the by product of a failed weapons developement program. If that’s true these guys are just advancing the experiment years after the fact. Fun stuff either way.

    1. avatar Moonshine7102 says:

      A rubber-substitute during WWII, actually. Wiki knows all:


  4. avatar Ralph says:

    Is it just me, or does that Silly Putty slug look vaguely obscene?

    1. avatar Ing says:

      Not just vaguely… That thing looks wrong on every level.

    2. avatar Sanchanim says:

      I am still sitting here giggling like an idiot!

  5. avatar Chris Dumm says:

    I wish they’d weighed and chrono’d the Silly Slugs, because then we’d know how much energy they had to play with. The more mvv/2 you’ve got, the more interesting things happen. Even a 2mm plastic pellet does wild things at 7km per second from a light gas gun.

    If I were loading these (and I’m absolutely NOT) I’d use a paper-wrapped Silly Slug inside a solid-walled shot cup-wad. This would hopefully keep the barrel from being slimed by smearing/burning Silly Putty.

  6. avatar Daniel says:

    Wow. Looks like someone has finally found the perfect way to deal with the daily Garfield, aside from yelling “BOOOO” at the page.

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