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Cartridge Jamming before OAL max

Discussion in 'Handloading and Reloading' started by berettaprofessor, Sep 30, 2019.

  1. berettaprofessor

    berettaprofessor Member

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    I have a Savage Axis ii 6.5 Creedmore that, measured with a Hornady straight gauge and using a Hornady 147 grain ELD bullet, has a maximum OAL of 2.965. This weekend, doing a fine-tune on a load, I was loading OAL of 2.800, 2.840, and 2.880 with the same Hornady 147 ELD to try to find the best OAL for consistency. I can't close the bolt on the 2.880 rounds. Anyone have a reasonable explanation why a finished cartridge OAL of 2.880 is too long in a gun that measures a max 2.965 with the same bullet in a Hornady gauge ((cases all trimmed appropriately to the same length)?
     
  2. VoodooMountain

    VoodooMountain Member

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    Is the brass sized correctly?
    Is the base of the cartridge riding correctly on the bolt face?

    Are ther rifling marks on the bullet?
    Is the gauge in spec?
     
  3. whughett

    whughett Member

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    OAL has nothing to do with head space. That ok?
     
  4. MEHavey

    MEHavey Member

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  5. berettaprofessor

    berettaprofessor Member

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    Voodoo mountain; yes, yes, no, yes. I use a Wilson gauge to confirm trim and sizing. I thought it was interesting that there were no rifling marks.

    MEHavey; the empty case chambers. So do the 2.800 and 2.840 rounds. Hornadys 2019 data says to seat it at 2.800 but I don’t think that’s max. SAAMI specs say the max is 2.825”

    I guess what I’m really wondering is where all those folks who talk about seating 0.020 off the lands would set OAL in this rifle. Or how they would get close to that magic -0.020 (2.945!) here.
     
  6. Walkalong

    Walkalong Moderator Staff Member

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  7. berettaprofessor

    berettaprofessor Member

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    Okay, Walkalong, I've seen that before,, but thanks for the reminder. Around 5:10, this guy probably solves my dilemma because he talks about the Hornady tool pushing bullets into the lands, i.e. overestimating length to lands...and I've been pushing HARD when I measure with it. So my 2.965 number is probably way over.
     
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  8. Walkalong

    Walkalong Moderator Staff Member

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    Yep, it is very seat to push a bullet into the lands with finger pressure. It's very hard to feel the initial contact.
     
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