Can you turn 300wsm into 7mm wsm

Discussion in 'Reloading' started by remcraz, Jan 29, 2011.

  1. remcraz

    remcraz Well-Known Member

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    Sep 26, 2008
    Can you run 300 wsm brass into a 7mm wsm sizer and turn it into 7mm wsm brass. I dont like the Winchester brass and am wanting another brand and does everyone that shoots the 7mm wsm use Win. brass or what brand
    Thanks Ted
     
  2. dirtball

    dirtball Well-Known Member

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    Jan 18, 2007
    Yes BUT The shoulder on the 7MM is farther forward than the 300 and 270, so you need to only partially size the neck down so that you have a false shoulder and then fireform with a modest load for the first firing.

    Dave
     

  3. geargrinder

    geargrinder Well-Known Member

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    Yes, exactly what dirtball said. All of my 7mmWSM is made from 300wsm Norma brass.

    Here's a picture.

    [​IMG]