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Load Data for 7.7 Jap

Discussion in 'Handloading and Reloading' started by myhandle87, Oct 1, 2009.

  1. myhandle87

    myhandle87 Well-Known Member

    Does anyone have some useful 7.7 Jap data? My handbook doesn't cover it.

    I need OAL, trim to length, and powder charges for IMR 4064. Any info would be of great use.
  2. rcmodel

    rcmodel Member in memoriam

  3. R.W.Dale

    R.W.Dale Well-Known Member

    When all else fails I use much more common and up to date 303brit data if need be. If course start low and work up.
  4. myhandle87

    myhandle87 Well-Known Member

    Thanks folks, does anyone know the trim to length? I'm making the brass from 30-06 brass so that's pretty important....
  5. rcmodel

    rcmodel Member in memoriam

    According to Hodgdon it is 2.260".

    Hornady says MAX case length is 2.270".
    Trim to length is 2.260".

  6. Kernel

    Kernel Well-Known Member

    According to my mystical modified Powley Computer, IMR 4064 is about the perfect powder for this cartridge. Good pick.

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