Seating depth when load requires max oal

Discussion in 'Handloading and Reloading' started by AJC1, Apr 13, 2021.

  1. AJC1

    AJC1 Member

    Joined:
    Jan 14, 2020
    Messages:
    2,793
    Location:
    Memphis
    So my 357-180-sil bullet requires maximum oal of 1.590 when loaded. Where would you seat the bullet? Currently I'm using 1.580 but may up it to 1.585 when I get crimp growth figured out.
     
  2. milsurpguy

    milsurpguy Member

    Joined:
    Feb 12, 2021
    Messages:
    393
    I would seat them as far out as possible where I could get a good crimp.
    But not too far out to where the bullets will jump out from recoil and jam the cylinder.
    Assuming they're for a revolver?
     
  3. Jim Watson

    Jim Watson Member

    Joined:
    Dec 24, 2002
    Messages:
    29,146
    Location:
    Florence, Alabama
    Does it have a crimp groove? You only have a little room to play with if you are roll crimping in the groove.

    Are you loading it to full power? Then you need a good crimp in the deepest part of the groove (if any.)
     
    mdi, FROGO207 and Wreck-n-Crew like this.
  4. reddog81

    reddog81 Member

    Joined:
    Apr 2, 2014
    Messages:
    1,377
    Location:
    Iowa
    What's the problem with using the crimp groove (assuming it has one...)?

    Looking at generic pictures of that bullet online and it seems like using the crimp groove should work for most applications.
     
  5. AJC1

    AJC1 Member

    Joined:
    Jan 14, 2020
    Messages:
    2,793
    Location:
    Memphis
    What you think is a crimp grove would exceed sammi spec by a lot. My next batch I'll measure
     
  6. Walkalong

    Walkalong Moderator Staff Member

    Joined:
    Nov 20, 2006
    Messages:
    67,007
    Location:
    Alabama
    Where you can roll crimp into the cannelure. Adjust max powder charge if needed vs OAL in load book.
     
    Barbaroja likes this.
  7. Walkalong

    Walkalong Moderator Staff Member

    Joined:
    Nov 20, 2006
    Messages:
    67,007
    Location:
    Alabama
    As long as it is not too long for the cylinder, you're OK.
     
    mdi and Barbaroja like this.
  8. reddog81

    reddog81 Member

    Joined:
    Apr 2, 2014
    Messages:
    1,377
    Location:
    Iowa
    What gun are you shooting them in? Not all .357’s have the same cylinder length. 1.59 is listed as .357 Mag max OAL for the ammo and that should work for any gun however most newer guns (GP100 & 686 for example) will have longer cylinders.
     
  9. AJC1

    AJC1 Member

    Joined:
    Jan 14, 2020
    Messages:
    2,793
    Location:
    Memphis
    I'm in a worst case loading for multiple guns a pistol and lever, and a neighbor. Tons of functional testing in my near future.
     
  10. Barbaroja

    Barbaroja Member

    Joined:
    Apr 9, 2020
    Messages:
    682
    You will likely need loads specific to each gun if you want to get all you can from your handloads.
    If your wanting something to work in everything I would think you would have some better luck with a more common weight bullet like a 158.
    Good luck
     
  11. AJC1

    AJC1 Member

    Joined:
    Jan 14, 2020
    Messages:
    2,793
    Location:
    Memphis
    When moulds become reasonable again I'll be hunting down a 158 round nose flat point. This situation is just a short term solution.
     
    Barbaroja and kalielkslayer like this.
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice