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.402 Diam. for loading .40 SW

Discussion in 'Reloading' started by owtlaw, May 1, 2011.

  1. owtlaw


    Dec 4, 2007
    I just recently started to load for my G22. I purchased a LW barrel for shooting cast bullets. I purchased some LSWC 155 grn that are sized to .402
    I loaded up some and ran them accross the chronograph. I am using 6.0 grns of WSF and they are shooting about 1100 give or take 20 fps. This is a bit faster than I had expected but being that they are sized at .402 maybe not too bad. The question is this. Will the .402 diam slugs cause undue weaand or damage to my barrel being that most cast are sized at .401 and jacketed are usually sized at .400?
  2. Bob2223

    Bob2223 Jack's buddy!

    Mar 26, 2009
    Spencer Indiana
    Not a problem it wont hurt your barrel.
    My cast 40's are sized about .402


  3. fredj338


    Dec 22, 2004
    Lead bullets are supposed to b at least 0.001" larger than groove dia, you are fine. That does seem a bit fast for 6gr of WSF, what OAL are you using?
  4. Zombie Steve

    Zombie Steve Decap Pin Killa

    May 31, 2007
    Old Colorado City