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  1. Old Comment
    fredj338's Avatar

    OAL & pressures

    I use an Oehler to do the vel. AS to improved SD; most powders will show less spread as the pressures increase. The higher pressres often mean better combustion. You see the same thing in compressed loads, very uniform vel, but all powders are not compressable.
    Posted 01-02-2013 at 10:43 by fredj338 fredj338 is offline
    Updated 07-29-2014 at 14:01 by fredj338
  2. Old Comment

    OAL & pressures

    Fred what chronograph do you use?
    Posted 01-02-2013 at 01:04 by Ffej backwards Ffej backwards is offline
  3. Old Comment
    TX Archer's Avatar

    OAL & pressures

    Good stuff, Fred. How do you explain the improved standard deviation when shortening the 9mm FMJ loads? Is that an effect of the pressure/velocity or is it possibly a result of the way the bullet is seated?
    Posted 02-23-2012 at 19:54 by TX Archer TX Archer is offline

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