3D printed shotgun slugs suck. Who knew?

Honestly, I'm surprised it wasn't tried sooner...

  bOing bOing is carrying a blurb about printed shotgun slugs. Apparently, they're terrible. They're made of ABS plastic, they take 30 minutes to an hour to print, and they require a lead ball to be inserted into them anyway. Hell, I never figured plastic printed ammo would be any good - the medium just isn't a good material for projectiles.

  The comments, however, led me to this gem: Silly Putty as shotgun ammo. Now THAT is kind of terrifying.

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