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How many feet per second does a bullet have to travel to be supersonic?

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The dry air speed of sound is about 1125 FPS, so anything over that is considered supersonic.
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How many feet per second does sound travel?

1100 feet Update: You're just about right. Technically, though, it's a little over: 761 miles = 4018080 feet 1 hour = 3600 seconds ~1116 constitutes supersonic flight

How many feet per second does a bullet go?

  It depends on several factors, such as the specifications of the cartridge fired, and what type of gun is used to fire it (or more specifically, the barrel length). It c