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357 sig help please

Discussion in 'Reloading' started by dirtyjoe, Aug 19, 2010.

  1. dirtyjoe

    dirtyjoe

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    Apr 14, 2010
    I have been reloading for only a few months. I started with 45 acp and I am comfortable and confident in my reloads in this caliber and have yet to have any FTF or FTE or any other problems.
    Now I am ready to try my hand at 357 sig for my G31. I am using Lee dies in a LCT. Using the info from you guys, I sized in a Lee 40 caliber carbide die first then in the Lee 357 sig die. I set my dies for my dummy rounds for case flare and bullet depth. I made 6 of these and tried to get bullet set back from thumb pressure and even placed nose of bullet on the bench and pressed as hard as I could and the bullets remained snug. All dropped in and out of the barrel smoothly and also chambered from the magazine 3 times without setback.
    My question is did I just get lucky on the bullet seating and crimp die??? I bought a 357 sig Lee FCD just as an extra safety measure and ran each dummy in it and could not tell that it was doing any work to the shell casing.
    I pulled the bullets from the 6 dummys and there were no signs of shavings or deformity. From what I have described, do you guys think I am ready to start my loads? Or am I missing something. I will be using Hornady 124 gr XTP and start with 11.7 grs of AA9 at 1.140 OAL. Your comments or suggestion are greatly appreciated. Dirtyjoe
     
  2. fredj338

    fredj338

    21,974
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    Dec 22, 2004
    so.cal.
    It sounds like your die setup is perfect & that is 90% of the battle w/ the 357sig. My only suggestion, start about 12.5gr of AA#9 & workup. I prefer mag primers w/ AA#9 but YMMV.
     

    Last edited: Aug 19, 2010

  3. dirtyjoe

    dirtyjoe

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    Apr 14, 2010
    Thanks Fred. Going to try to go out tomorrow and I will post results if I have enough fingers left to type with!!!!!
     
  4. RB98SS

    RB98SS

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    Jun 17, 2009
    Shoreview, MN
    Not everyone that reloads 357sig uses the Lee FCD but I am convinced that it does a fine job of preventing bullet setback. A firm crimp using the collet style FCD works great. IMHO.
     
  5. Glad you said that, I was just fixing to ask if anyone had tried mag primers in the 357 sig with #9.
     
  6. Hydraulicman

    Hydraulicman

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    May 21, 2007
    i also like my Lee dies for 357 sig. so far i've only used 124 grain XTP's

    I size using one shot lube. I flair the bare minimum to seat a bullet.



    soon i'll search for a cheaper option.
     
  7. dirtyjoe

    dirtyjoe

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    Apr 14, 2010
    All I have is CCI Small Pistol primers. Will they be o.k. until I can get the magnums?
     
  8. Bello

    Bello America/Italia

    2,346
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    Sep 24, 2008
    East Coast
    those sig dies are not carbide correct? does anyone make carbide sig dies?
     
  9. dirtyjoe

    dirtyjoe

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    Apr 14, 2010
    Lee's are not carbide. I read on GT that Dillon (I think) makes carbide 357 sig dies
     
  10. fredj338

    fredj338

    21,974
    1,072
    Dec 22, 2004
    so.cal.
    Many use std primers w/ AA#9, but I find mags give better ignition of the larger charge of ball powder, adding 50-75fps o/ std.
    Yep, at this moment, Dillon is the only maker of carbide dies in the 357sig. I don't understand either as all that is needed is a carbide sizing ring in any steel die. Only the case body/head needs the carbide insert for sizing. That's why the 40 sizer works w/ the 357sig.