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.

Night Vision NZ Alpine


User Tag List

+ Reply to Thread
Results 1 to 13 of 13
Like Tree1Likes
  • 1 Post By Towely

Thread: Firing pin striking primer when chambering

  1. #1
    Member
    Join Date
    Mar 2014
    Location
    Palmerston North
    Posts
    209

    Firing pin striking primer when chambering

    As the title says, I chambered a round the other day in my Ruger SR556 and when I ejected it I noticed that the primer had what looked like a firing pin strike on it? It's only very faint, but I haven't been able to test it again since I'm not going to chamber a round in the middle of Auckland if it could potentially slam fire (suppressors aren't that good).

    Possible issues?
    Too much oil/lube on the firing pin?

    I've also noticed that soft point rounds get really dinged up on the tip when chambering so is this going to affect accuracy of my goat rounds?

    Ammo is PPU 55gr soft points (soft primer?)

    Cheers
    Attached Images Attached Images   

  2. #2
    Member
    Join Date
    Sep 2012
    Location
    Your town
    Posts
    669
    Its normal. Floating firing pin.
    kimjon likes this.

  3. #3
    Member Mathias's Avatar
    Join Date
    Oct 2015
    Location
    Canterbury, home of the big Rakaia Red Stag
    Posts
    4,491
    Yep, inertia takes over after BCG is home. Firing pin keeps moving. I found any large lead tip gets a bit munted, PPU & PMC do the same in mine.

  4. #4
    Terminator Products Kiwi Greg's Avatar
    Join Date
    Dec 2011
    Location
    Nelson
    Posts
    6,678
    Test it at the range to see if the munted tips make a difference.

    Carefully single load a few for a group then once its cooled try the same from the mag
    Contact me for reloading components, brass, projectiles, powder, primers, etc

    http://terminatorproducts.co.nz/

    http://www.youtube.com/user/Terminat...?feature=guide

  5. #5
    Member
    Join Date
    Dec 2013
    Location
    Tokoroa
    Posts
    1,221
    If shooting goats at very long range the munted point may affect accuracy a little probable not enough to miss a goat it could alter the B C a little,
    just swap to HP or plastic tipped bullets, if you are worried do some range testing to see what if any affect there is.

  6. #6
    Member specweapon's Avatar
    Join Date
    Apr 2013
    Location
    Tasman
    Posts
    1,042
    Yep happens in all AR15's that i've seen. Primer mark is one of the reasons why 5.56 ammo have hard primers, would be interested to see if pistol primers would go off if used

  7. #7
    Member
    Join Date
    Mar 2014
    Location
    Palmerston North
    Posts
    209
    I just thought that the lead tip being deformed to one side might throw off the balance of the rotation blah blah blah. Guess I'll behave to give it a try when I get to the range.

  8. #8
    Member rockland's Avatar
    Join Date
    Sep 2015
    Location
    Golden Bay
    Posts
    735
    Yep both of your issues are normal AR15 functioning.
    Damaged soft points look bad but don't seem to affect accuracy much, at least for hunting use.

  9. #9
    Member Beavis's Avatar
    Join Date
    Dec 2011
    Location
    Taupo
    Posts
    4,890
    Niether points raised are issues. I run soft point projectiles exclusively for hunting and never have problems. The primer mark is normal, and the BCG is designed to not allow the firing pin to protrude enough to cause a slam fire as the bolt is camming into battery. Slam fires are extremely rare in AR15's. I personally know of one which totalled the upper receiver, but it was due to primers not being seated properly.

  10. #10
    Almost literate. veitnamcam's Avatar
    Join Date
    Dec 2011
    Location
    Nelson
    Posts
    24,964
    I used to run Hornady interlocks (good bullets) and as the were seated out a fair way the tips would get flattened after a few trips in the magazine. I tested them on the range and it made no discernable change to accuracy at 100m but at 500 the badly flattened ones inmpacted low enough to miss a large gong underneath everytime.

    Sent from my SM-G800Y using Tapatalk
    "Hunting and fishing" fucking over licenced firearms owners since ages ago.

    308Win One chambering to rule them all.

  11. #11
    Member kimjon's Avatar
    Join Date
    Apr 2012
    Location
    Waikato
    Posts
    1,635
    Well covered above, both normal issues.

    On the munted soft points, I've experimented by purposely damaging .223 ammo and shooting it at 200m. It had minimal effect on accuracy, not enough to worry about for hunting, i.e. still easily got 3" groups using factory ammo, all deformed from mild to extreme.

    I wouldn't do it to my long range ammo on purpose, but for normal .223 hunting ranges its not an issue.

    Kj

  12. #12
    Member
    Join Date
    Mar 2014
    Location
    Palmerston North
    Posts
    209
    Cheers for the information and replies guys.

  13. #13
    Member Sideshow's Avatar
    Join Date
    Apr 2015
    Location
    UK
    Posts
    7,916
    The dented tip won't hurt your accuracy. But if you reload just try a slight scratch to the base of a bullet head and see what happens.
    Now this really will affect accuracy.

 

 

Similar Threads

  1. Cases being marked after chambering
    By MGNZ in forum Firearms, Optics and Accessories
    Replies: 12
    Last Post: 22-04-2018, 01:49 PM
  2. Unusual Chambering Issue
    By Apocalypticaman in forum Reloading and Ballistics
    Replies: 10
    Last Post: 31-10-2016, 01:21 PM
  3. Advice on issues with chambering a round.
    By oneipete in forum Firearms, Optics and Accessories
    Replies: 10
    Last Post: 07-04-2014, 10:56 AM
  4. magnum primer v large rifle primer
    By mucko in forum Reloading and Ballistics
    Replies: 19
    Last Post: 17-01-2013, 09:32 AM
  5. New 50 cal chambering
    By crnkin in forum Firearms, Optics and Accessories
    Replies: 9
    Last Post: 18-03-2012, 11:01 PM

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!!