123 gr Sierra MK load data for 260 Rem.

Discussion in 'Reloading' started by Txhillbilly, Nov 11, 2012.

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  1. Txhillbilly

    Txhillbilly Well-Known Member

    Jan 20, 2010
    I'm trying to find some load data for these bullets.My Sierra data book doesn't list them-it's a couple years old.
    Can anyone help me out?
    I'm looking for data with Hogdon or Alliant powders. Thanks
  2. Bear 9362

    Bear 9362 Well-Known Member

    Nov 3, 2008
    I did a ladder test with 123 Sierras and started at 45grains of H4350 and went up in 1/2 grain increments to 48grains.
    47. 5 and 48 grains were too hot.
    46 and 47 grains looked promising but i didn't get round to shooting them at 300 yards as I've decided to use 140 A max's and just about settled on a load for these.

    Hope this helps.

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