Watch a Massively Powerful "Walkback" Slingshot Shoot Cannonball-Sized Ammo [Video]

We've got a big ol' crush on slingshot master Joerg Sprave, but for all his rubbery kinetic might, there comes a point when the maximum power of a slingshot maxes out. That is, unless you're such a huge badass you use trees for slingshots. More »

Source: http://feeds.gawker.com/~r/gizmodo/full/~3/Lxlx8YckJJg/watch-a-massively-powerful-walkback-slingshot-shoot-cannonball+sized-ammo

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