Quantcast
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

First 9mm loads need help.

Discussion in 'Handloading and Reloading' started by djmike, Aug 4, 2013.

Thread Status:
Not open for further replies.
  1. djmike

    djmike Member

    Joined:
    Jan 26, 2013
    Messages:
    21
    I just loaded my 1st batch of 9mm and have discovered something is wrong. I did these on a Dillon 550b with Dillon dies and did what I thought was the same exact thing each time. The cases were lubed. As you can see by the pictures, when I put them in the case gauge about 3 out of 10 did not sit flush. I now see a small buldge at the bottom of the case which was not there when I inspected the brass. Could this be a sizing problem? Maybe I didnt pull the handle down all the way? I am confused because some worked and some didntt. I DID NOT SHOOT THESE but am able to load them through my weapon smoothly without problem. I wont shoot them unless someone can tell me if they are safe to shoot or not. These are obviously unacceptable to me so I would really like some input on ideas of why/how this happens. I am using once fired brass that is mine and I know it has only been fired once before if that helps at all.
    Thanks,
    Mike
     

    Attached Files:

  2. Muddydogs

    Muddydogs Member

    Joined:
    Nov 23, 2011
    Messages:
    458
    Same or different head stamps? Probably just need to set your sizer die down a little or maybe you are squashing the case during crimping. If they feed and chamber I would shoot them. Basically throw the case gauge away, set your dies right and test fit new bullet combos in your barrel. If dies are set right there is no need for a case gauge and as you have seen the problem rounds won't fit into the case gauge but they will fit in your barrel so is there really a problem?
     
  3. larryh1108

    larryh1108 Member

    Joined:
    Aug 29, 2008
    Messages:
    2,454
    Location:
    NC
    The one on the right seems to have the "bell" still on it where you load the bullet. It does not look like it got any crimp. The one on the left has less bell. It looks like a crimp issue to me. Others who know more will probably chime in.
     
  4. Bush Pilot

    Bush Pilot Member

    Joined:
    Oct 17, 2007
    Messages:
    1,636
    If they chamber in your gun I'd shoot them. Make sure you don't short stroke your press, it may be the problem with these rounds.
     
  5. Walkalong

    Walkalong Moderator

    Joined:
    Nov 20, 2006
    Messages:
    48,851
    Location:
    Alabama
    In the pics the bell is not completely removed. That will stop it from going all the way into the gauge every time.

    I also have 9MM chambers that will accept rounds that fail the gauge, but good reloads should pass the Wilson gauge. I also have an EMP with a SAMMI minimum chamber, so my reloads have to pass it.

    [​IMG]
    [​IMG]
     
  6. Mike 27

    Mike 27 Member

    Joined:
    Jan 22, 2010
    Messages:
    454
    Location:
    Alaska, Fort Wainwright
    As Walkalong said the flare looks like has not been removed fully and could be your issue. Have you done a plunk test in the barrel of your gun? if it passes the plunk test it is fine as unless it is at the tight end of sammi specs it will probably work and load into battery. I would run them through and work the flare out and re-inspect from there.
     
  7. jwrowland77

    jwrowland77 Member

    Joined:
    Apr 8, 2012
    Messages:
    2,293
    Location:
    Central Arkansas
    I'd have to agree with everyone as well. Looks like a crimp issue. The one on the right doesn't look like its been crimped at all with as much flare that's still there. The one on the left looks better but still looks like it has a little flare to it.
     
  8. rcmodel

    rcmodel Member in memoriam

    Joined:
    Sep 17, 2007
    Messages:
    59,082
    Location:
    Eastern KS
    Adjust your taper-crimp die down so the finished rounds case mouth measures .376".

    I think that will fix your problem.

    rc
     
  9. beatledog7

    beatledog7 Member

    Joined:
    Jun 18, 2011
    Messages:
    5,093
    Location:
    Tidewater
    Yep, you need to remove that flare. Just don't overdo it.

    In all likelihood, you wouldn't have needed to flare at all.
     
  10. djmike

    djmike Member

    Joined:
    Jan 26, 2013
    Messages:
    21
    Thank you to everyone who responded to this post. I went back and adjusted my crimping die maybe an 1/8 turn and it took out the flare. It was a very minor adjustment that made the difference. Even though they cycled through my gun, the piece of mind knowing they are correct is really what matters.
    Thanks again,
    Mike
     
  11. elwoodm

    elwoodm Member

    Joined:
    Mar 17, 2011
    Messages:
    241
    Location:
    north carolina
    another thing don't over flare the mouth just enough to get the bullet in will do. the seater die will do the rest. after a few more loads check the case length and trim if needed remember headspace is on the mouth.
     
  12. goon

    goon Member

    Joined:
    Jan 20, 2003
    Messages:
    7,251
    Yep, don't overflare. Some of my first .357 reloads looked like a trumpet after I ran them through the expander die, but that just puts unnecessary wear on your casings. Just flare enough to allow smooth seating of the bullet.
     
  13. gamestalker

    gamestalker member

    Joined:
    Sep 10, 2008
    Messages:
    9,832
    Location:
    SW Arizona
    I kind of thought the one on the left appeared to have a bit too much crimp, (.376") as per RC, being the target number. And the one on the right definitely appeared to still have some bell remaining on the mouth. And the amount of belling appeared to be a little excessive, I think I see what might even be a split on that right one?

    And if I were you, I wouldn't waste time lubing cases, no need to with carbide dies, and other similar dies. Just give them a quick tumble to knock grit and debris off, and re-size. I would avoid adding the task of cleaning lube off the brass to your process.

    It's good that you are asking questions, and appear open minded to sound advice also. But you might be over thinking it slightly, in that, if you know the load is what you intended, the rounds fit your chamber, then you are perfectly good to go. Your chamber is actually the best case gauge to use. Pull your barrel out and do the plunk test. If the cartridges pass the "plunk"test they are perfectly acceptable to shoot from that firearm.

    GS
     
Thread Status:
Not open for further replies.

Share This Page