According to the Rated RR guys, this is the most difficult trick in the world: Fire a bullet against a machete and split it in two hitting two targets. They didn't only do it once—but twice in a row. And then once more, shooting backwards using an iPad as a mirror to aim.
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Hitting the edge of a machete I get, but I don't see the challenge in hitting balloons- placed directly behind it- with shrapnel