looking for 270 improved loads

Discussion in 'Reloading' started by pjracer, Oct 23, 2008.

  1. pjracer

    pjracer Well-Known Member

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    Jan 20, 2008
    aquired a .270 ackley improved with 24" douglass barrel. loading info would be appreciated. have rl 22, h4831, imr 4831,imr 4350, h1000 on hand. should I use magnum primers since increased powder charge?
     
  2. Big Jake Duke

    Big Jake Duke Well-Known Member

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    Jan 11, 2011
    I realize this is an aged thread, i was hoping you would have some info now that I can explore.
     

  3. Trickymissfit

    Trickymissfit Well-Known Member

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    130gr. bullet
    59gr. / 4350 @ 3200
    60gr. / 4831 @ 3080
    65gr. / 4831 @ 3390

    150gr. bullet
    56gr. / 4350 @ 2950
    58gr. / 4350 @ 3030
    62gr. / 4831 @ 3150

    all powders are from IMR, and most are max loads. Ackley says there is little improvment in velocity to be gained as the case is already overbore.
    gary
     
  4. Big Jake Duke

    Big Jake Duke Well-Known Member

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    looking at the numbers you have posted it appears that the 270 Ackley will have an increase in velocity of a little over 9% on the 130 gr from accepted levels (Normal max 3100fps) and just under 9% for the 150's. (Normal max 2900fps.)

    Thanks for the info.