Tula Large Rifle Primer failure to fire

Discussion in 'Main Message Board' started by dminn1, Jul 15, 2017.

  1. dminn1

    dminn1

    Joined:
    Jan 7, 2012
    Messages:
    63
    I recently purchased 1000 Tula large rifle primers to try in my Savage model 10 with a .243 Win Shilen barrel. I am about 300 rounds into these and I have had 4 primers that have failed to fire on the first strike. All 4 have fired on the second strike. This is the only primer I have experienced this issue with in this rifle. I have noticed that the Tula primers take a good deal more force to seat to the bottom of the primer pocket and feel the anvil seat. I use an older Lee hand priming tool that gives excellent feel when seating primers and I don't think seating is the issue with the failures to fire. This rifle is a switch barrel rig and has several thousand rounds through it and many dry fires but no failures to fire on the first strike ever with any other primer.

    Just wanted to know if anyone else has experienced this issue with the Tula primers.

    Thanks
    Darin
     
  2. Tom Baker

    Tom Baker

    Joined:
    Aug 5, 2014
    Messages:
    12
    I've shot many thousands of Tula primers, large and small, many different actions/firing pins. Never had a single failure. They don't read the wind very well sometimes though.
     
    Downhill and JLT like this.
  3. perry42

    perry42

    Joined:
    Jan 27, 2016
    Messages:
    299
    The Tula primer has a "hard" cup and Savage firing pins are not known for hard strikes. A new firing pin spring and a firing pin 7 to 5 thousandths longer will cure the problem.

    perry42
     
  4. JohnKielly

    JohnKielly Australia, not Austria

    Joined:
    Oct 25, 2007
    Messages:
    642
    I've read of many instances when people fail to seat the Russian primers to the correct depth because their "feel" sense is set for others. Check that you are properly bottoming them out in the primer pocket.
     
    Rsadams and dkhunt14 like this.
  5. Richard Coody

    Richard Coody Silver $$ Contributor

    Joined:
    Feb 19, 2017
    Messages:
    744
    Yep

    New firing pin spring and check firing pin projection

    Make sure your primer.seating system is fully seating the primers. If half the firing.pin force is used to finish seating the primer that is your problem
     
  6. brxbrad

    brxbrad

    Joined:
    Feb 22, 2010
    Messages:
    438
    Send them to me.....I'll get rid of them for you....
     
    Ggmac and dkhunt14 like this.
  7. 1shot

    1shot Site $$ Sponsor

    Joined:
    Feb 19, 2006
    Messages:
    1,305
    When I seat those primers, I seat them firmly then rotate the case 180* and do it again. I've never had a problem doing that way in a variety of rifles.
    I hope this helps,

    Lloyd
     
    dkhunt14 likes this.
  8. MGYSGT

    MGYSGT Silver $$ Contributor

    Joined:
    Oct 27, 2010
    Messages:
    558
    You can adjust the length your Savage firing pin protrudes out the front of the bolt head.
     
    savagedasher and Dgd6mm like this.
  9. Keith Glasscock

    Keith Glasscock True believer - Straight 284 Gold $$ Contributor

    Joined:
    Aug 17, 2010
    Messages:
    1,829
    The Tula primers come out of the package dome shaped. They seem to like being "sensitized" by being pushed down until a fair sized flat spot is apparent.

    I've never had a failure with them either, but I've always seated them as above.
     
    Dgd6mm and dkhunt14 like this.
  10. Shynloco

    Shynloco You can lead a horse to water, but ........ Silver $$ Contributor

    Joined:
    Apr 10, 2010
    Messages:
    3,010
    Excellent practice to seat primers of any make. Been doing that for years and have rarely had a primer failure, except for a batch of bad primers a few years ago.

    Alex
     
  11. jepp2

    jepp2 Silver $$ Contributor

    Joined:
    Aug 11, 2011
    Messages:
    493
    Any primer that doesn't go on the first strike but goes on the second strike, wasn't seated deeply enough. At least that is my experience. I wouldn't increase protrusion to compensate for a problem with not seating the primers deeply enough to begin with.
     
    dminn1 likes this.
  12. dminn1

    dminn1

    Joined:
    Jan 7, 2012
    Messages:
    63
    I will give them a little more push and see if I can flatten them out a bit. I failed to mention it in my first post but I seat, turn 180, and seat again as standard practice.
     
  13. Killick

    Killick Silver $$ Contributor

    Joined:
    May 17, 2008
    Messages:
    207
    I've had Wolf failure to fire because I uniformed the primer pockets and that was enough to seat it beyond the pin protrusion. (Barnard action)
     
  14. jr600yd

    jr600yd

    Joined:
    May 22, 2006
    Messages:
    838
    +1^^^^^
     
  15. dminn1

    dminn1

    Joined:
    Jan 7, 2012
    Messages:
    63
    That is a possibility as I have uniformed the pockets on the Win brass I am running in this rifle. I will check protrusion and may lengthen it some.
     
  16. dminn1

    dminn1

    Joined:
    Jan 7, 2012
    Messages:
    63
    After doing much research on Savage firing pin protrusion I decided to make an adjustment to see if it would help with my Tula primer ignition problems. My firing pin protrusion measured .058 which was within Savage specs. After giving it some thought I decided to reset it to .035 which should increase pin fall slightly and give a little more striking energy. After this adjustment I have had no first strike failure to fires in the last 120 rounds. Better yet I have had a significant reduction in es with the 2 powders I shoot in this rifle. Going to the range this weekend to have another look at a powder I abandoned earlier due to poor es numbers to see if this may have been caused by ignition problems.
     
    gotcha likes this.
  17. ragsflh

    ragsflh Silver $$ Contributor

    Joined:
    Dec 18, 2011
    Messages:
    131
    i was going to reply but it was anwered.same as i would have.
     
  18. spclark

    spclark Gold $$ Contributor

    Joined:
    Nov 23, 2007
    Messages:
    3,245
    That's not a typo? You shortened your FP protrusion by 0.023" and now you're seeing better results?

    That's kinda counterintuitive; I'd love to have access to what your research turned up leading to this solution.
     
  19. dminn1

    dminn1

    Joined:
    Jan 7, 2012
    Messages:
    63
    That's not a typo. Protrusion is not the whole story when it comes to reliable ignition. Some research indicates the firing pin only indents the primer approximately .025 regardless of protrusion. On the Savage, decreasing the protrusion increases the pin fall which evidently helps with available striking energy. Anyway you look at it I am happy with the results as shown on target and by the chronograph.
     
    wholman and gotcha like this.
  20. Robert

    Robert Silver $$ Contributor

    Joined:
    Feb 16, 2008
    Messages:
    395
    If it is not a typo, then, all the maths concerning linear energy transmission need to be re-established....

    The only parameteter affected in thhis case is the amount of cup metal deformed, which is neglectible in regard to the other parameters...

    R.G.C
     

Share This Page