What velocity for sub-sonic?

Discussion in 'The Ammo & Reloading Forum' started by jdon72, Mar 15, 2010.

  1. jdon72

    jdon72 New Member

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    What velocity is the limit for ammo to be considered sub-sonic? How fast before it is over the 'sub-sonic' factor?

    J
  2. Alpo

    Alpo Well-Known Member

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    The speed of sound, at sea level, is 1125 feet per second. If it is slower than the speed of sound, it is "sub sonic". Faster than the speed of sound, it is "super sonic".
  3. jdon72

    jdon72 New Member

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    thanks Alpo.
  4. Alpo

    Alpo Well-Known Member

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    You're welcome.
  5. big steve

    big steve New Member

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    Exactly.
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