fps drop off

Discussion in 'Reloading' started by jimbothepunk, Nov 2, 2010.

  1. jimbothepunk

    jimbothepunk Well-Known Member

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    May 17, 2010
    chronyed my load the other night and i got so resonable speeds then i let the barrel cool down the the next 5 gradually slowed down is this a neck tension problem?

    lucas
     
  2. Catfish

    Catfish Well-Known Member

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    Jan 6, 2007
    It could be alot of thing. Neck tention can cause some problems, but usually only with custom chambers and over bore rounds. If you are loading hot it can occure with factory chambers and rounds though.
     

  3. jimbothepunk

    jimbothepunk Well-Known Member

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    Not really a hot load thought the heat of the barrel and the weather mite play a part
     
  4. bigngreen

    bigngreen Well-Known Member

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    Was the sun going down on the last set of shots lightbulb
     
  5. jimbothepunk

    jimbothepunk Well-Known Member

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    Was getting late in the day is it better to do it on a cloudy day or a sunny one
     
  6. Loner

    Loner Well-Known Member

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    Any temp sensitive powder can up the pressure if they sit in a hot chamber on a
    hot day.