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Thread: Power factor

  1. #1
    mccoy's Avatar
    mccoy is offline Member
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    Question Power factor

    Dear all,
    reading some of Jerry Miculek's tips on the web (very clear and useful ones) I came across the expression: "Power factor" for the first time.

    For revolvers up to a Power factor of 200 he suggests one type of grip, for bigger revolvers, another (lower) one (the S&W 500 mag has a power factor of 640 according to him).

    Anyone can tell me exactly what is this power factor and its units?

  2. #2
    TOF's Avatar
    TOF
    TOF is offline Senior Member
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    Hey mccoy, how are things across the big water.

    Power factor in the competative gun world is :

    Muzzle Velocity (Fps) X bullet weight in grains divided by 1000

    for example:

    Mv = 1000 Fps
    bullet = 180 Grains

    1000*180=180000
    180000/1000= 180PF

    In IPSC there are 2 PF levels used to determine scoring. Major is 165 and Minor is 125 last I heard.

    I hope that helps.


  3. #3
    mccoy's Avatar
    mccoy is offline Member
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    TOF,
    here across the big pond we are having some springtime weather, although we'd be supposed to have nearly freezing temps in this period.

    Thanks for the reference on PF. I went and searched more on IPSC but it's a wide world out there, previously unknown to me, I've soon stopped lest I stay glued to the screen all day.

    So PF should have the dimensions of a momentum, unless, as maybe I've understood, it's normalized by a momentum of 1000 fps*grs so it becomes a pure number...

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