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Old Hornady manual almost got me in trouble

Discussion in '10mm Reloading Forum' started by BobinIL, Apr 30, 2012.

  1. BobinIL

    BobinIL

    31
    0
    Nov 7, 2001
    central IL
    Started loading some 155 Hornady XTP with AA#7 I have an old hornady manual and it has a max load of 13.9 grns of AA#7 :wow: After reading on here and looking at the Accurate manual, I decided to rethink using this old hornady manual. I had some loaded to 13.5 and promptly pulled them and reloaded them with 12.5 grns.
     
  2. Minnow

    Minnow

    2,399
    1
    Jan 13, 2006
    Techas
    Latest Hornady book, 8th Edition

    10MM Auto
    155gr Hornady XTP
    AA#7
    Maximum Load = 12.7gr
    Cartridge Overall Length = 1.260"
    1250 Feet Per Second from Hornady's 5" Colt Delta Elite test barrel.
     

    Last edited: Apr 30, 2012

  3. Jitterbug

    Jitterbug

    870
    5
    Aug 27, 2002
    It's always a good idea to get two or more reliable sources of published data, I prefer three, and try and make some common sense of what your reading.

    It's been rumored the older Hornady manuals had some error regarding AA7 and 10mm. Typo's and mistakes made by mere mortals are common.

    Hornady 4th 13.9 grains
    Hornady 7th 15.1 grains

    Accurate Arms 3.5 Edition, 12.7 grains for a 155 gr. HP @ 37,500 psi

    Lyman 49th, 155 gr. Silvertip, 12.8 grains @ 29,800 CUP

    No doubt that 15.1 grain load is a bit warm. BE CAREFUL AND DO YOUR OWN DUE DILIGENCE WHEN RELOADING ANYTHING!

    ALWAYS START WITH A MINIMUM LOAD AND WORKUP
     
    Last edited: May 1, 2012