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.357 Sig seating die

Discussion in 'Handloading and Reloading' started by EBShooting, Jun 13, 2012.

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  1. EBShooting

    EBShooting Member

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    Forgive me if this has been asked before, I tried the search and came up with nothing.

    I am trying to find if there is a good seating die out there for 357 sig. I have the RCBS 2 die set and I don't care for the seating die. It is inconsistent. i get about 5% that either get seated to far or it tears off a chunk of the copper jacket. Or is this just another part of why no one like loading this round?

    thanks guys,

    Eric
     
  2. rcmodel

    rcmodel Member in memoriam

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    Sounds like the seating stem doesn't match the bullet shape you are using.

    RCBS can fix ya right up with a different stem better matched to the bullet shape.

    rc
     
  3. cfullgraf

    cfullgraf Member

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    If you only have a two die 357 Sig set, you are missing a die. You should have a resizer, mouth expander and a seating die.

    A properly expanded mouth will eliminate shaving the jacket on seating if the bullet is seated straight.

    Also, what rcmodel said about the seating stem.
     
  4. rcmodel

    rcmodel Member in memoriam

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    Most bottleneck handgun dies come in two-die sets just like rifle dies.
    Including the RCBS .357 SIG one.

    rc
     
  5. jim243

    jim243 Member

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    rcmodel, you should get the Lee pistol die sets, they are all three die sets with the exception of the deluxe sets that are four die sets (Factory Crimp Die - 4th die).

    EB, if you don't have the powder through die you are not flaring the case mouth and that's why you are tearing off copper on your bullets.

    Jim
     
  6. unknwn

    unknwn Member

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    I found the Hornady New Dimension die in the proper caliber range to be the most satisfactory choice.
     
    Last edited: Jun 13, 2012
  7. cfullgraf

    cfullgraf Member

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    My 357 Sig die set and my 38/45 Clerke die set each have three dies just like straight walled handgun dies.

    I had not seen the RCBS two die set before. Learn something every day.
     
  8. hAkron

    hAkron Member

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    I resize first with an RCBS .40 die, then ith a Lee 357 Sig die. I used to use the lee expander to expand, now I use my powderfunnels.com Universal PTX. I use a Redding micrometer competition seating die and I crimp with a Lee FCD.
     
  9. EBShooting

    EBShooting Member

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    I use a dillon 550, so the powder station flares the case mouth. The die came with two stems, one for tmj and the other for round nose. I am using a 124gr FP copper jacketed bullet.
    But I found the tmj stem to be even more inconsistent, in fact I could never get a consistent bullet depth with it. So I switched to the RN stem and had much better success.
     
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