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Thread: Fired Primers Sticking on Decapping Pin

  1. #1
    Boolit Master
    Join Date
    May 2011
    Northwest corner of Vermont

    Fired Primers Sticking on Decapping Pin

    I have been having problems with fired primers sticking on the decapping pins when reloading small pistol primer cartridges. This seems to be confined to Federal Primers so I assume there is "something" about their anvil design that lets it grab onto the tip of the decapping pin. It happens on both RCBS and Lyman dies.

    If I was single stage loading it would be no big deal but using my Pro-2000 I am going nuts with fired primers getting reseated and having a bunch of bad rounds to pull down.

    The primers stick bad enough that some of them get stripped off the pin as the ram is lowered and getting re-seated just enough for them to carry over to primer seating station where they get seated back in the pocket. Sometimes I notice the ram not being in quite the right position when the old primer bottoms out, sometimes not.

    The cure would probably be to go to Dillon sizers or back to CCI primers if they were available. All I can find is Federal primers and Dillon dies are weeks out on delivery. In the short term I'm going to try polishing the decapping pins down a little to see if that helps.

    Is anybody else having this problem? I can sorta deal with it by pulling ever case out of the press after sizing to visually confirm the primer is gone, or I could resize/decap on my Rockchucker, both of which add time and steps to the reloading process.
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  2. #2
    Boolit Master
    Join Date
    Feb 2013
    Central Kansas
    I've been having the same problem, going to try putting a little bit of a radius on the corner of the decapping pin, it seemed to help on another set of dies I was using.Dillon pins come this way now, but that spring loaded decapper really works nice.


  3. #3
    Boolit Master
    Join Date
    Aug 2005
    South Jersey
    I have been having problems with fired primers sticking on the decapping pins when reloading small pistol primer cartridges.
    Alan, to resolve your issue:
    * Buy a Lee Universal Decapping Die & decap your brass
    * Clean your brass
    * Then reload using your Pro-2000

  4. #4
    Boolit Master
    lka's Avatar
    Join Date
    May 2013
    Lol, Sounds like a pain in the *** Never had it happen to me
    Hope for change.

  5. #5
    Boolit Master

    Join Date
    Mar 2013
    Northwest Ohio
    A radious will help as will a very slight bend to the pin not alot just enough so the primer is off center when relaxed. thus the edge of the primer is knocked of on the side of the pocket. Also set the pin a little on the long side. Work the radious on to the pin with a drill press and fine stone.

  6. #6
    Boolit Man Newboy's Avatar
    Join Date
    Mar 2005
    South, by God, Carolina
    Grind the tip at an angle. That will do it.

  7. #7

    Join Date
    Jul 2010
    North Florida
    Interesting problem. I think I would decapp off of press with the Lee universal decapper; however, that adds a step that you likely don't want since you are using a progressive press. Try cutting the radius on the decapping pin, or perhaps it is too sharp and needs blunting. Good luck. Just be happy you could find any small pistol primers at all.

  8. #8
    Boolit Master
    farmallcrew's Avatar
    Join Date
    Dec 2010
    Central PA
    I have the sticking primer issue to. I used a little bit of emery cloth on the pin, it shined it up a little and took the burs off. Works slick as a whistle now. Its on a Lyman die.
    Looking for: 32acp mold-- 22 hornet jwords-- 7.62x54r- jwords, boolits, mold-- 7x57 brass, mold---7.62 Nagant-brass-- 8x56r-brass, jwords-- any old firearm laying around ( I'm starting to take gun smithing classes, and I'm looking for pieces I can work on, PM me with your details)

    Poor execution of a problem on your part doesn't constitute a problem on mine.

    13/14 Trapping season

  9. #9
    Boolit Bub Wheeljack's Avatar
    Join Date
    Apr 2013
    Jersey Shore
    I like to decap before I clean my shells. I made a decaping tool from a Stanley, spring loaded, punch.
    Stanley 58-013 Self-Centering Screw Hole Punch
    Two adjustments to the punch. The tip of the punch was ground down to fit into the primer hole with no binding. The end of the punch was ground down to fit well into my 9mm shells. A piece of 2 x 4 with lots of small holes drilled thru, that the primers would fit into. The punch fits into the shell, the shell is placed over the hole in the 2x4 and a whack with a mallet and the primer is out. It's just faster than using the press. Then I may clean the primer hole or not, and then clean the shells.

    Check out the punch at

  10. #10
    Boolit Master Mike Kerr's Avatar
    Join Date
    Jan 2011
    Garland, Tx
    It will be interseting to see if grinding/beveling/radius changes etc. on the end of the decapper will solve your problem.

  11. #11
    Boolit Master

    David2011's Avatar
    Join Date
    Jan 2007
    New Mexico
    +1 for a little bevel on the tip of the decapping pin. Worked for me. Polish the edges smooth after beveling.

    Sometimes life taps you on the shoulder and reminds you it's a one way street. Jim Morris

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BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
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