Welcome guest, is this your first visit? Create Account now to join.
  • Login:

Welcome to the NZ Hunting and Shooting Forums.

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed.

Darkness DPT


User Tag List

+ Reply to Thread
Page 1 of 4 1234 LastLast
Results 1 to 15 of 51
Like Tree49Likes

Thread: Light Primer Strikes

  1. #1
    Member
    Join Date
    May 2019
    Location
    Kurow
    Posts
    97

    Light Primer Strikes

    Hi all,

    Im having a problem with my Remington 700 doing light strikes on primers. I have just got my 280 AI up and running and was doing a ladder test when every 1in 5 rounds was not firing as the firing pin was not hitting hard/deep enough for ignition. I am using CCI 250 magnum primers as it was all I could get my hands on at the time with Peterson brass. I have done some testing around headspace and am confident that has nothing to do with the issue. Firing pin assembly looks cleaned with no gunk build up in it so can't see a major issue there. Firing pin assembly is a light weigh one supplied and installed by Gunworks.

    With a few peaces of the brass that misfired I reprimed them making sure they were seated as deep as they could go to see if the firing pin was actually seating the primers further into the case. Off the 4 rounds 1 misfired again but I am not confident this is out of the equation.

    I do have some federal gold match large rifle primers on the way to test as I have read that CCI primer are supposedly harder than the rest.

    This is a new issue as I am not the first owner of this rifle. I had not shot this gun before getting it reamed into 280 AI but would imagine this problem only came about since I have owned this rifle.

    Anyone have some suggestions of how to troubleshoot or where to go form here?

  2. #2
    Member Micky Duck's Avatar
    Join Date
    Apr 2015
    Location
    Geraldine
    Posts
    13,982
    when yo usay reprimed them...do you mean recocked action and fired again????
    my zastava did this really early on.... after I learnt to decock bolt for storage,issue went away..the 700 bolt is a bit hard to recock before slipping back into rifle,I use a gentle grip with vice grips to do mine.

    you confident its not headspace...will be interesting to see if the now fired brass does it again ,would be partial length resizing myself to eliminate possibility of it being slightly short brass in slightly long chamber..... if you decock bolt,does the fireing pin stick out decent amount???
    75/15/10 black powder matters

  3. #3
    Member
    Join Date
    May 2019
    Location
    Kurow
    Posts
    97
    Sorry I meant I pulled the bullet and deprimed the case then reprimed added powder and projectile. Firing pin sticks out about 1.6mm.

    I tested the biggest brass headspace variation I could, with the shortest headspace brass firing and the second to longest headspace was the one that didn't fire. From factory the brass is between .002 - 0.005 smaller than the headspace of the rifles chamber.

  4. #4
    Member Micky Duck's Avatar
    Join Date
    Apr 2015
    Location
    Geraldine
    Posts
    13,982
    the classic is to recock and try again....pretty much confirms strike is too light....
    ZQLewis and Jim356 like this.
    75/15/10 black powder matters

  5. #5
    Member
    Join Date
    Aug 2018
    Location
    Christchurch
    Posts
    1,034
    Have a rem 700 that produces light strikes too with CCI 450's and less frequently with Federal 205's. Lightweight firing pin and stiffer spring didn't make any difference - maybe even made it worse.

    The factory trigger also held the firing pin further back on cocking than a timney trigger did. So "upgrading" the trigger actually made the problem worse. Contacted timney and they sent out a replacement sear which got it so that it was only misfiring at the same rate as before.

    Gunsmith now wants to take a look to check headspace and also that the firing pin isn't getting bound up by poor tolerances inside the bolt body somewhere.
    Jim356 likes this.
    Resident 6.5 Grendel aficionado.

  6. #6
    Just another clown dannyb's Avatar
    Join Date
    May 2018
    Location
    Oxford, North Canterbury
    Posts
    5,433
    What happens if you install the factory firing pin ?
    veitnamcam and grandpamac like this.
    #DANNYCENT

  7. #7
    Member
    Join Date
    May 2019
    Location
    Kurow
    Posts
    97
    Quote Originally Posted by dannyb View Post
    What happens if you install the factory firing pin ?

    Unfortunately I don't have a factory one and I just sold my only other remington in the safe.

  8. #8
    Member
    Join Date
    Mar 2015
    Location
    North Canterbury
    Posts
    3,928
    Because it has been reamed AI, I would be doubtful that the dies and chamber are matched. The chamber may well be slightly longer than the full length sized case. I have a 2506 AI and it has this very situation.
    All I do is neck size and slightly brush the shoulder of the fired cases if they need it, then run them all through the rifle to make sure they chamber - Ackleys dont stretch.
    Please check a fired case by priming it without sizing and testing if the primer fires
    'Bother' said Pooh, as he chambered another round ... Wong Far King Way

  9. #9
    Member Sideshow's Avatar
    Join Date
    Apr 2015
    Location
    UK
    Posts
    7,352
    Its not a dud batch of primers?
    It's all fun and games till Darthvader comes along
    I respect your beliefs but don't impose them on me.

  10. #10
    Member
    Join Date
    May 2019
    Location
    Kurow
    Posts
    97
    Quote Originally Posted by Moa Hunter View Post
    Because it has been reamed AI, I would be doubtful that the dies and chamber are matched. The chamber may well be slightly longer than the full length sized case. I have a 2506 AI and it has this very situation.
    All I do is neck size and slightly brush the shoulder of the fired cases if they need it, then run them all through the rifle to make sure they chamber - Ackleys dont stretch.
    Please check a fired case by priming it without sizing and testing if the primer fires
    Okay Ill run a few rounds with fire cases and see where that gets me. Did this eliminate the issue or do you still have a few cases misfire? Also how often are you pushing back your shoulder?

  11. #11
    Member Micky Duck's Avatar
    Join Date
    Apr 2015
    Location
    Geraldine
    Posts
    13,982
    Moa Hunter saying same thing I did...partial length resize so shoulder is pushing bum of case back...it may not fix problem but it eliminates possibility of it being short case/long chamber ...If my memory serves me correctly you SHOULD be able to fireform std .280 case in your chamber??? in theory this will be even worse as case will definately be slightly too short and not supported so much.....
    75/15/10 black powder matters

  12. #12
    Member
    Join Date
    May 2019
    Location
    Kurow
    Posts
    97
    Just tested fired brass with primers, Did 12 cases 4 of which failed to fire. Reprimed those 4 cases, 3 of which fired and one did not. Measured the headspace on all the brass and could not see and relationship between headspace and primers that went off.
    Moa Hunter likes this.

  13. #13
    Member Micky Duck's Avatar
    Join Date
    Apr 2015
    Location
    Geraldine
    Posts
    13,982
    bugger bugger bugger...there goes that easy fix out the window....
    any chance you have another rifle can test primers in???
    Moa Hunter likes this.
    75/15/10 black powder matters

  14. #14
    Member
    Join Date
    May 2019
    Location
    Kurow
    Posts
    97
    Yeah I should be able to find another rifle. Wouldn't imagine it would be primers as it is pretty clear that the primers have not been hit properly once they misfire

    Name:  IMG_4001 copy 2.jpg
Views: 180
Size:  73.2 KB

    Middle 3 where misfires, two on the outsides fired
    Moa Hunter and Cordite like this.

  15. #15
    Member
    Join Date
    Mar 2015
    Location
    North Canterbury
    Posts
    3,928
    Quote Originally Posted by Jim356 View Post
    Just tested fired brass with primers, Did 12 cases 4 of which failed to fire. Reprimed those 4 cases, 3 of which fired and one did not. Measured the headspace on all the brass and could not see and relationship between headspace and primers that went off.
    If the cases have been fired only and not resized they are a perfect tight fit to the chamber, so the test you have done has narrowed the cause down to the firing pin and mainspring. Is it possible that the new firing pin sear engagement is different to the factory one so that the fall is shorter and has less impact ?
    Cordite likes this.
    'Bother' said Pooh, as he chambered another round ... Wong Far King Way

 

 

Similar Threads

  1. Timney Trigger Causing Light Primer Strikes
    By C.T. in forum Firearms, Optics and Accessories
    Replies: 18
    Last Post: 26-04-2022, 07:19 PM
  2. Replies: 1
    Last Post: 21-10-2020, 07:06 PM
  3. Anyone had primer piercing issues with small primer brass in a Tikka?
    By 308mate in forum Reloading and Ballistics
    Replies: 16
    Last Post: 20-10-2020, 09:37 PM
  4. Small primer and large primer in sand rifle
    By Danger Mouse in forum Reloading and Ballistics
    Replies: 9
    Last Post: 25-08-2019, 07:31 PM
  5. magnum primer v large rifle primer
    By mucko in forum Reloading and Ballistics
    Replies: 19
    Last Post: 17-01-2013, 09:32 AM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Welcome to NZ Hunting and Shooting Forums! We see you're new here, or arn't logged in. Create an account, and Login for full access including our FREE BUY and SELL section Register NOW!!