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Bullet Depth & OAL

Discussion in 'Reloading' started by Leatherneck7202, Jun 17, 2020.

  1. Leatherneck7202

    Leatherneck7202 New Member

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    Jun 17, 2020
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    I’ve started playing with 458 SOCOM. I have the Lee 3 die set with sizer, expander, and bullet seater/crimper. The instructions say to put in a round that you’re duplicating in order to set up the seater die. But, I’m not duplicating the rounds I have – instead I’m using hardcast 300 gn. So I just guessed on the seating plug and figured I could “walk it in” if I was too long. fullsizeoutput_1dcb.jpeg
    As you can see, it’s not even seated to the cannelure yet. But, it’s shorter than the closest thing I could find in my reloading book (Lyman 50th ed). That was a 300 grain flat nosed round and the OAL should be 2.145” The one above is currently 2.067”.

    So, I guess my question is, do I keep seating it till I get to the cannelure and disregard the OAL? Or do I need a longer bullet?
     


  2. rotor

    rotor Active Member

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    My solution is a case gauge to set your resizing die and a Lyman ammo checker to check the final product.
    I use case gauges on everything I reload and have rifle ammo checkers but rarely load rifle. I am very conservative when I reload and check everything twice. Lyman makes a 458 socom ammo checker.
     
  3. Leatherneck7202

    Leatherneck7202 New Member

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    Jun 17, 2020
    Spring Branch, TX
    I've got a Tromix slotted case gauge. Seems to fit fine, but I haven't seated to the cannelure and it's much shorter than the example in the book. That's my concern.
     
  4. ZX9RCAM

    ZX9RCAM Over the Rainbow bridge... TGT Supporter

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    Welcome to the Forum!
     
  5. Leatherneck7202

    Leatherneck7202 New Member

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    Jun 17, 2020
    Spring Branch, TX
    Thanks! Hoping to get some good knowledge. I've reloaded pistol for about 4 years but just started out on rifle this week.
     
    ZX9RCAM likes this.
  6. popsgarland

    popsgarland MEMBER

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    Howdy and welcome to TGT where you will the answers you may need for any questions you may have.
     
  7. toddnjoyce

    toddnjoyce TGT Addict

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    You picked a hell of a load to start with. Much easier options to transition on, but that’s neither here nor there.
    You’ll find a trove a data and information at http://458socomforums.com/
     
    ZX9RCAM likes this.
  8. Leatherneck7202

    Leatherneck7202 New Member

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    Jun 17, 2020
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    I actually did some .308 but need to try them out before I go into "full production." So I switched to this little thumper. Next two projects are 30-06 and 45-70 Govt.
     
    toddnjoyce likes this.
  9. Leatherneck7202

    Leatherneck7202 New Member

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    Thanks!
     
  10. SQLGeek

    SQLGeek Wheel Gun Nut TGT Supporter

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    That bullet isn't made for 458 SOCOM I don't think so the cannelure isn't necessarily going to work. I wouldn't seat all the way to it if you're going under your min COL.
     


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