338 lapua improved

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by 300spanker, Mar 12, 2010.

  1. 300spanker

    300spanker Well-Known Member

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    I have been looking at buying a 338 lapua improved, would you go with a 40 degree shoulder of 50 degree. thanks.gun)
     
  2. J E Custom

    J E Custom Well-Known Member

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    37.5 degrees is about optimum but 40 degrees would be my second choice.

    The reamer makers will make what ever you want.

    J E CUSTOM
     

  3. trueblue

    trueblue Well-Known Member

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    40 degrees or less.
     
  4. 300spanker

    300spanker Well-Known Member

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    thanks for the posts. in my original post i mean't to say 40 or 50 degree shoulder is best? What type of speed with a 338 improved push a 300 grn. smk. if i had a 28.5 inch barrel. thanks. gun)
     
  5. Long Time Long Ranger

    Long Time Long Ranger Well-Known Member

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    I did one right after the lapua case came out with the 37.5 degree shoulder and the shoulder moved forward just a bit. In a 28" Hart barrel with 1-10 twist it maxed out at 2950 fps with the 300 smk. It got excellent accuracy in the 2900-2950 fps range. Unfortunately it shot to good and I was offered to much money for it so I don't have it anymore opting to stay with my faster 338-378 wby's. The improved lapua is a very good choice for a big 338 if you have an action for it.