Quantcast
  1. Sign up now and join over 35,000 northwest gun owners. It's quick, easy, and 100% free!

Shell Casing question

Discussion in 'General Firearm Discussion' started by sadiesassy, Apr 29, 2011.

  1. sadiesassy

    sadiesassy Prescott Active Member

    Messages:
    553
    Likes Received:
    51
    I am new to this Semi auto pistol scene and have been saving the casings for reloading later. MOst of my guns have been revolvers

    I was noticing today on my .40 S&W casings that there appears to be a slight indentation (Like something struck it or gripped it). It is about 4mm below the top of the casing and the width is about 2mm - thin line not deep – ( Like something crimped it). It is not easy to detect it by running a wire down the inside. I looked at the last 200 rounds and it looks pretty consistent.
    My definition of top is the location where the bullets sits.
    The gun is Springfield XD 40 SC

    I checked some ammo off my .380 pistol and see something similar - not as pronounced

    Is this normal?

    IS it still good for reloading / or will the reloading process address this?

    Thank for any inputs
     
  2. chizuck

    chizuck central Wa. Member

    Messages:
    164
    Likes Received:
    7
    It sound like the empty is just hitting the slide on its way out. That wont hinder reloads at all. My 45 does the same thing, has not caused a problem. By the way I love that little pistol you got xd sc is a nice gun.
     
  3. sadiesassy

    sadiesassy Prescott Active Member

    Messages:
    553
    Likes Received:
    51
    Thanks
    I figured since it was happening on two different guns it was probably normal.
    But if not - I wanted to get oit addressed
     
  4. deadshot2

    deadshot2 NW Quadrant WA State Well-Known Member

    Messages:
    2,407
    Likes Received:
    537
    .40 S&W cases are prone to developing a bulge, not unlike what a girl might show over tight low-rise britches. This occurs for various reasons and it can be aggravated by the sizing procedure during reloading. Several reloading equipment manufacturers have developed a die to remove this. They use a die with an open top and the case is pushed all the way through from the bottom. If you are loading any of the straight walled, autoloader calibers, like 380 ACP, 40 S&W, 10mm Auto, 41 AE, 45 GAP, 45 ACP, 45 Win Mag, it would be a good idea to have one. The biggest cause of this "bulge" is the unsupported portion of the chamber but can also be caused by timing issues where the case is being extracted too soon and the chamber pressures are still too high (like too light a recoil spring).
     
  5. sadiesassy

    sadiesassy Prescott Active Member

    Messages:
    553
    Likes Received:
    51
    Thank you
    Have not seen a bulge - more an indentation.
    But will take the feedback for when I start reloading
     
  6. chizuck

    chizuck central Wa. Member

    Messages:
    164
    Likes Received:
    7
    He was referring to a flattened case mouth on one side. That happens when the brass hits the slide on the ejection. But that is great bit of info you have there thanks.