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Wedgetail
.275 member


Reged: 22/07/20
Posts: 75
Loc: Australia- NSW
Re: 7x57 Type B Oberndorf style build [Re: 93x64mm]
      #377122 - 02/06/23 07:36 PM

Thanks 93.

Spent a bit of time on the bottom metal:
Hogged the lanyard (or whatever it is) hole out.


Cut the hinge out


Formed it out of key stock


MIG’d it


Inlet the DST




Filled lock holes




Cleaned up ok




Just waiting for another sear to replace the bubba’d one so I can start on the Dunlop style double lobed kicker

--------------------
“A man can never have too much red wine, too many books, or too much ammunition” - Rudyard Kipling


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bwanabobftw
.375 member


Reged: 29/12/04
Posts: 662
Loc: Texas
Re: 7x57 Type B Oberndorf style build [Re: Wedgetail]
      #377133 - 03/06/23 07:14 AM

Really nice work on the trigger guard !!!!!!!!!!

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93x64mm
.416 member


Reged: 07/12/11
Posts: 3954
Loc: Nth QLD Australia
Re: 7x57 Type B Oberndorf style build [Re: bwanabobftw]
      #377137 - 03/06/23 08:01 AM

Slow & steady wins the race - money just speeds the pace up!

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Wedgetail
.275 member


Reged: 22/07/20
Posts: 75
Loc: Australia- NSW
Re: 7x57 Type B Oberndorf style build [Re: 93x64mm]
      #379244 - 10/09/23 01:17 PM

Thanks guys. Kind of like a long distance endurance race I guess…

Anyway the metal work may be finished, final cleaning up and tang filing excepted. Spent a while on the trigger and pretty happy with it - crisp 5.5lb pull on the unset front and a decent hair when set. To achieve this:
Built up the shroud to take the slop out to allow for a consistent cocking piece to sear height


Cut down a trigger, added a bit of (roughly) 1045




Welded a nut to adjust the depth of sear engagement, and formed the two lobes for the two triggers.


Unfortunately, once fitted up and tested front pull was 12lbs, and that was after I cut down the sear spring as much as I dared. So I swapped out the solid bit of the kick off piece for a 1/4” ball bearing. After polishing the lobes, polishing the receiver where the contact point is, hardening and replacing the pins with drill bit shaft, this reduced it to 5.5lbs





Pretty happy with its function now. Thoroughly tested operation with the bump test, repeated opening and closing of the bolt, trigger pull with safety on then releasing safety, all good. Think I can now move onto the stock

--------------------
“A man can never have too much red wine, too many books, or too much ammunition” - Rudyard Kipling

Edited by Wedgetail (11/09/23 07:06 AM)


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93x64mm
.416 member


Reged: 07/12/11
Posts: 3954
Loc: Nth QLD Australia
Re: 7x57 Type B Oberndorf style build [Re: Wedgetail]
      #379270 - 11/09/23 06:31 AM

slow & steady mate - functioning's the main thing!

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