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I have a couple noob questions

Discussion in '10mm Reloading Forum' started by panzer10mm, Dec 8, 2010.

  1. panzer10mm

    panzer10mm

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    What exactly is keyholing, and what is the glock smile? (i don't have a glock but i'm curious)

    Thanks
     
  2. CitizenOfDreams

    CitizenOfDreams

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    Tumbling bullets that are not properly spin-stabilized leave keyhole-shaped holes in a paper target.

    There are at least two unrelated phenomena referred to as "Glock smiles":
    - A bulge at the base a spent case caused by the shape of a Glock chamber (esp. in 10mm and .40S&W);
    - Wear marks on a Glock barrel where it touches the slide.
     
    Last edited: Dec 8, 2010

  3. panzer10mm

    panzer10mm

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    That's wierd because all of the cases I shoot out of my dan wesson have this bulge your talking about. Is the bulge attributed to a loose chamber or is it just a byproduct of the 10mm or 40 s&w case at high enough pressures?
     
  4. B__

    B__

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    In your case you likely need a stronger recoil spring to hold the gun in battery longer. Pretty much all 10mm should run a 20# spring or higher. 20 is plenty IMO though.
     
    Last edited: Dec 9, 2010