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how to determine if subsonic

Discussion in 'GATE Self-Defense Forum' started by olympicmotors, Jul 29, 2010.


  1. olympicmotors

    olympicmotors
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    Joined:
    May 24, 2009
    106
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    Mas:

    You have mentioned several times on this forum to make sure to use supersonic rounds in the 155 - 165 grain 40 caliber Speer Gold Dots.

    I do not have access to a chronograph , I just thought all the gold dot rounds were standardized and the only difference in them was the grain.

    My box says:

    Speer LE
    Gold Dot
    duty ammunition
    40 S&W 165 GR. GDHP
    53970

    This is a 50 round box I purchased online from ammunitiontogo.com

    How do I know if these are the full power rounds?

    I was carrying 180 grain but have switched to the 165 as per your recommendation.

    Thanks
     
  2. Mas Ayoob

    Mas Ayoob
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    KoolAidAntidote
    Moderator

    Joined:
    Nov 6, 2005
    4,657
    345
    Product code for the Speer Gold Dot 165 grain .40 S&W in full power loading (1140-1150 foot seconds nominal velocity) is 23970. Speer is not currently listing a 165 grain subsonic in the Gold Dot series.

    best,
    Mas