Bat/CZ fire pin action primers

Discussion in 'Small Stuff--22s, 20s, and 17s' started by jhn, Jul 13, 2019.

  1. jhn

    jhn

    Joined:
    Jun 28, 2011
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    Hey guys.

    Litle history first, in short, started with a CZ750 .308 with precision
    matches.

    After 4 or 5 years a friend invited me to use his Bat machiene 30br.
    Max points are 250, i went from 227 to 247, on a strange rifle.

    So i was better than my CZ.

    Got myself a Bat machiene, with a LW match barrel 22' in .222.
    In a mcMillan ath stock, sniper fill.
    Shoots aferage 2,65MM/about 0.1 moa.

    Quistion starts from here.

    In my CZ i always using cci primers, never a fail or mailfuction, the cz fire

    pin in a rugged and heavy firepin, and almost has his own recoil.

    Same in my Bat .222, fired over 400 rounds now and had about 5 misfires.
    Today at the range 1 misfire but second strike would fire, and 1 delayed
    fire, (pulled the trigger and after 2 seconds it fired).

    In misfire i always do 30 counts before bold handling!

    Is the Bat more gentle/soft on strike, are my cci primers too hard.
    Ways to check problems?
    I dont know.
    What you guys think?

    Much regards Johan, NL
     
  2. jhn

    jhn

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    Some plus info, on my Anschutz 1813 super match .22lr, Cz453 varmint .22lr, and my cz750 i feel the firepin fibration in my cheek.
    On the Bat i dont.
     
  3. sundance

    sundance Silver $$ Contributor

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    Try replacing the firing pin spring.I had the same issue when I switched from Federal to cci 450 primers.New spring= end of problem.All cci 450 ignite on first hit.
     
  4. jhn

    jhn

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    Jun 28, 2011
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    Oke thanks Sundance, i will contact Bat machine about this.
    Also have info for new spring, where it come from?
     
  5. tmwinds

    tmwinds Gold $$ Contributor

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    Steps I would take before spending any money on parts
    1. Verify that you don't have excessive head space due to bumping the shoulders excessively when resizing your brass.
    2. Make sure you are seating primers firmly to the bottom of the primer pockets.
    3. Disassemble and clean the bolt body and firing pin assembly. Apply a light coat of oil , no grease.
    4. Check the firing pin fall per the BAT website.
    If none of this helps the problem then call BAT and discuss with them.

    Good luck
     
    anschuter2013 likes this.
  6. RGRobinett

    RGRobinett Silver $$ Contributor

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    Ditto this. Especially step#2 (red)! :eek:RG
     
    Last edited: Jul 19, 2019
  7. jhn

    jhn

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    Jun 28, 2011
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    @tmwinds,
    1 will check wit fired brass, and some tape, have no go and nogo atm. (edit new brass)
    2 I hand prime, and check every round, use Lapua brass.
    3 with the new action i orderd also the tool, i will check!
    4 will look into that 1 too.

    Thanks for all responses, i will look into it.
    And give you back what the problem was.

    much regards Johan
     
    Last edited: Jul 14, 2019
    tmwinds likes this.
  8. jhn

    jhn

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    Jun 28, 2011
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    DSCN0058.PNG Oke checked all.

    1 with new brass, and some tape. removeded fire pin before testing with new brass, the bolt just falls down.
    One layer of tape on new brass, instead of falling down, stuck at begining of locking.
    Second test ,2 tape layers, FULL lock!!
    Measermants are o,21MM /o.oo826Inch full lock, 0,1MM/0.00416inch 25% cock.

    On saami site for .222 rem is 1.29/1.30MM a standart???.

    2 , working on it, maybe after many years my mind slip??

    3 Did that.

    4 Did made a picture, but some how didnt showup on the drive.
    Fire pin is exulaly a bit longer then mention on Bat site, 1,55MM/0.061Inch.

    Whats left is my primer handling, did i get sloppy over the years?

    Ahwel slap myself behind the ears, and focus!

    Thanks guys for all the info, and a pic of my messeure tools i use.

    Grats from NL Johan
     
  9. Raythemanroe

    Raythemanroe Bullet Whisperer Silver $$ Contributor

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    I would look at primer seating and headspace.. You should be able to pop all primers if things are correct.. One other thing you could do is measure firing pin fall.


    RAY
     
  10. jhn

    jhn

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    I did headspace real tight, fire pin fall is closer then Bat machine demensions
     
  11. Raythemanroe

    Raythemanroe Bullet Whisperer Silver $$ Contributor

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    What is the fall? You hand seating primers?

    Ray
     

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