Powder for the 280 Improved

Discussion in 'Reloading' started by chad, Mar 24, 2014.

  1. chad

    chad Well-Known Member

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    Which is the best temp stable powder for the 280 AI?
     
  2. cowboy

    cowboy Well-Known Member

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    What is the twist in your barrel and what weight of bullet are you referring to?
     

  3. clambdin

    clambdin Well-Known Member

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    I have had good luck with H4831SC in mine..
     
  4. chad

    chad Well-Known Member

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    its a factory Remington 280 barrel im rechambering. I believe its a 1-9 twist. Im looking between the 140 grain bullet and 168
     
  5. cowboy

    cowboy Well-Known Member

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    On the 140's - I have no personal field proven experience
    On the 168's - H4831sc but don't rule out Retumbo (it will be a slightly compressed load)
     
  6. chad

    chad Well-Known Member

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    What was your velocities and how long was your barrel?
     
  7. cowboy

    cowboy Well-Known Member

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    2 different rifles both finished @ 25", field verified at 3400 ft. elevation and 40F, 1-10 twist

    H4831sc - running at 2840 fps w/168 berger VLD
    Have been higher velocity but this is where my field verified accuracy was
    at it's best

    Retumbo - 2950 fps (different rifle) from H4831sc w/168 Berger VLD

    Work loads up gradually as all rifles/barrels are different.

    Not questioning the above response but I would be surprised if a factory 280 Rem would come with a 1-9 twist.
     
  8. DocDoc

    DocDoc Well-Known Member

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    Actual twist for current 280 Rem factory is 1 in 9.25.
     
  9. MudRunner2005

    MudRunner2005 Well-Known Member

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    I have been shooting IMR 7828 SSC in my .25-06 Ackley Improved (and several other Ackleys) and it's working great. Excellent velocities and seems to be very temp stable in several of my other calibers as well.