To be perfectly fair up front, the bullet in the first clip in the video below is moving at half speed. Repeated with a round moving at a full 1,080 feet per second, the skin gives way. But both half-speed and full-speed tests were also conducted with real human skin and human skin augmented with regular silkworm silk, as well as with piglet skin. In all cases, the bullet won out. The only exception was the bioengineered spider silk tissue.