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.

Sarvo Black Watch


User Tag List

+ Reply to Thread
Results 1 to 14 of 14
Like Tree6Likes
  • 2 Post By Magnus
  • 1 Post By ebf
  • 1 Post By 6x47
  • 1 Post By zimmer
  • 1 Post By 10-Ring

Thread: 5/16 tap

  1. #1
    Member Magnus's Avatar
    Join Date
    Nov 2018
    Location
    wellington
    Posts
    623

    5/16 tap

    Does anyone have a 5/16x36tpi tap I could borrow by any chance? Wanting to make a couple of modified cases but seems hornady have used a most uncommon thread on the OAL gauge.
    Drink Beer.

  2. #2
    Member
    Join Date
    May 2020
    Location
    Rolleston, Canterbury
    Posts
    99
    I just ordered 2 off AliExpress, just have to wait


    Sent from my iPhone using Tapatalk

  3. #3
    I hunt, therefore I am.
    Join Date
    Sep 2019
    Location
    Tai Tokerau
    Posts
    4,568
    No engineering house in wellington?? Can't see it costing more than a tenner.
    If you're careful you can do it with a ring spanner. Proper tap handle probably cost a bit more.
    Quote Originally Posted by 308
    not smart enough to be useful
    Diligentia Vis Celeritas
    Life Advice

  4. #4
    I hunt, therefore I am.
    Join Date
    Sep 2019
    Location
    Tai Tokerau
    Posts
    4,568
    Follow up, how did u work out it's that thread and not M8x0.75?
    Quote Originally Posted by 308
    not smart enough to be useful
    Diligentia Vis Celeritas
    Life Advice

  5. #5
    Member
    Join Date
    May 2020
    Location
    Rolleston, Canterbury
    Posts
    99
    Quote Originally Posted by mimms2 View Post
    Follow up, how did u work out it's that thread and not M8x0.75?
    Look online

    Hornady tell you itís 5/16x36

    Trade tools will have them Iím sure


    Sent from my iPhone using Tapatalk

  6. #6
    Member Magnus's Avatar
    Join Date
    Nov 2018
    Location
    wellington
    Posts
    623
    Quote Originally Posted by mimms2 View Post
    Follow up, how did u work out it's that thread and not M8x0.75?
    Hornady and the interwebs say its 5/16x36tpi, jus went out to garage to wave the vernier over it an thread measured 7.8 ish which is roughly 310thou damn near on 5/16 and my pitch gauge matches 36tpi. 0.75 metric pitch is way off.
    ebf and mimms2 like this.
    Drink Beer.

  7. #7
    MSL
    MSL is offline
    Member MSL's Avatar
    Join Date
    May 2014
    Location
    Waikato
    Posts
    4,868
    Quote Originally Posted by Magnus View Post
    Hornady and the interwebs say its 5/16x36tpi, jus went out to garage to wave the vernier over it an thread measured 7.8 ish which is roughly 310thou damn near on 5/16 and my pitch gauge matches 36tpi. 0.75 metric pitch is way off.
    Definitely 5/16thx36, have tapped a number of cases with one.


    Sent from my iPhone using Tapatalk

  8. #8
    ebf
    ebf is offline
    The gnome returns ! ebf's Avatar
    Join Date
    Jun 2012
    Location
    Hutt Valley
    Posts
    6,369
    @Magnus, I've got one, bring your cases and I will run the tap in. Prefer not to let my tooling go offsite...
    dannyb likes this.
    Viva la Howa ! R.I.P. Toby
    Black rifles matter...

  9. #9
    Member Magnus's Avatar
    Join Date
    Nov 2018
    Location
    wellington
    Posts
    623
    @ebf Mate would appreciate that! I'll flick ya a pm.
    Drink Beer.

  10. #10
    Member
    Join Date
    Feb 2014
    Location
    Hawkes Bay
    Posts
    1,175
    It's become a std procedure- soon as I've got a fired case out of a new rifle/barrel, I make a modified case with it. Will give a far more valid reading than any SAAMI-based one.
    widerange likes this.

  11. #11
    Member zimmer's Avatar
    Join Date
    Oct 2012
    Location
    Waikato
    Posts
    3,018
    As an aside I no longer use the Hornady modified case method to find the lands contact point.
    Now use the Alex Wheeler "click" method.
    10-Ring likes this.

  12. #12
    Member zimmer's Avatar
    Join Date
    Oct 2012
    Location
    Waikato
    Posts
    3,018
    Just looked at my tap. It's a 5/16 - 36UNS 2B.
    Is that what others are using?

  13. #13
    I hunt, therefore I am.
    Join Date
    Sep 2019
    Location
    Tai Tokerau
    Posts
    4,568
    Quote Originally Posted by Magnus View Post
    Hornady and the interwebs say its 5/16x36tpi, jus went out to garage to wave the vernier over it an thread measured 7.8 ish which is roughly 310thou damn near on 5/16 and my pitch gauge matches 36tpi. 0.75 metric pitch is way off.
    I wondered at that. Seemed odd that you'd have a pitch gauge but not the tap.
    Alls well that ends well!
    Quote Originally Posted by 308
    not smart enough to be useful
    Diligentia Vis Celeritas
    Life Advice

  14. #14
    Member 10-Ring's Avatar
    Join Date
    Feb 2014
    Location
    Middle Earth
    Posts
    1,575
    Quote Originally Posted by zimmer View Post
    As an aside I no longer use the Hornady modified case method to find the lands contact point.
    Now use the Alex Wheeler "click" method.
    Yep, been using that for a while now. Very good method.
    zimmer likes this.
    When you are dead, you don't know you are dead. It is difficult only for others.

    It is the same when you are stupid.

 

 

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!!