Researchers at Sandia National Laboratories have built a prototype bullet that can guide itself to hit a target over a mile away. Unlike most bullets, this one is shot from a non-rifled gun, which is typically grooved to spin bullets out of the barrel. The self-guided bullet exits the barrel much like a dart would leave your hand. This release allows the bullet to calibrate it's adjustments must faster, at up to 30 times per second, which means that it actually is more accurate at longer distances.
The bullet is able to travel at speeds of up to 2400 fps, which isn't quite up to military standards yet. As noted in the article, these speeds were reached using off-the-shelf gunpowder. The research team believes that using a customized gunpowder will allow it to fly much faster.
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Self-guided bullet could hit laser-marked targets from a mile away
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