ASSRA Forum › General › Single Shot Rifles › What is the purpose of these two screws?
(Moderator Group: Moderator)
‹ Previous Topic | Next Topic ›
Page Index Toggle Pages: 1 Send TopicPrint
Hot Topic (More than 10 Replies) What is the purpose of these two screws? (Read 7443 times)
harry_eales
Ex Member


What is the purpose of these two screws?
Mar 18th, 2014 at 6:45am
Print Post  
Over many years I have been assembling information about Sharps Borchardt Rifles and customised versions of the same. It's an interesting pastime and I have learned a lot. However, I am stuck to the point of frustration by two small machine screws that appear only on the left hand side of Schuetzen Rifles made by A.O.Zischang using original Sharps Borchardt actions. See picture. These two screws are situated towards the rear of the action above the large diameter 'Plug Screw'. 

At first I thought they may have connection with a sight mounting, but all the Scopes I have seen on Zischang Rifles have had the scope blocks mounted on the barrel, and it would appear that they are too far forward for some form of peep sight to be mounted on a bracket attached to the side of the receiver, especially when the rifle is fitted with an excellent original Borchardt micrometre sight. So the mystery remains, what was their purpose? Does anyone have any idea(s)?

Harry
« Last Edit: Mar 18th, 2014 at 6:57am by »  
Back to top
 
IP Logged
 
Lefty38-55
Senior Forum Member
****
Offline



Posts: 366
Location: New England
Joined: Sep 11th, 2013
Re: What is the purpose of these two screws?
Reply #1 - Mar 18th, 2014 at 8:30am
Print Post  
What did an examination from the inside of the action show?
  
All of my single shots shoot one tiny ragged hole with cast bullets ... it's just the following shots that tend to open up my groups Wink ...
Back to top
 
IP Logged
 
harry_eales
Ex Member


Re: What is the purpose of these two screws?
Reply #2 - Mar 18th, 2014 at 8:45am
Print Post  
Lefty38-55 wrote on Mar 18th, 2014 at 8:30am:
What did an examination from the inside of the action show?

Hello Lefty,
I haven't seen the rifle personally, I live in England and the rifle is in the USA. There are numerous examples of Zischang's rifles having these screws but I've never seen anything attached to them in photographs. If the foremost of them was of any depth at all it would contact the Breechblock, the rearmost would screw into vacant space once occupied by the concealed safety operating cam. There seems no reason for them to be there, but they must have had a purpose of some sort.

Harry
  
Back to top
 
IP Logged
 
Old-Win
Frequent Elocutionist
*****
Offline



Posts: 1854
Location: Minnesota
Joined: Nov 24th, 2005
Re: What is the purpose of these two screws?
Reply #3 - Mar 18th, 2014 at 9:53am
Print Post  
Harry,
Can you tie this one to any specific builder??  Bob
  
Back to top
 
IP Logged
 
westerner
Frequent Elocutionist
*****
Offline


deleted posts and threads
record holder.

Posts: 12603
Location: Why, out West of course
Joined: May 29th, 2006
Re: What is the purpose of these two screws?
Reply #4 - Mar 18th, 2014 at 10:03am
Print Post  
Harry, the two holes are were for holding a saddle ring.  On the military carbine model. 

  Joe.
  
A blind squirrel runs into a tree every once in a while.
Back to top
 
IP Logged
 
harry_eales
Ex Member


Re: What is the purpose of these two screws?
Reply #5 - Mar 18th, 2014 at 10:27am
Print Post  
Old-Win wrote on Mar 18th, 2014 at 9:53am:
Harry,
Can you tie this one to any specific builder??  Bob

Hello Bob,
I've only ever seen them on Zischang modified rifles, never on any other gunsmiths work.

Harry
  
Back to top
 
IP Logged
 
harry_eales
Ex Member


Re: What is the purpose of these two screws?
Reply #6 - Mar 18th, 2014 at 10:33am
Print Post  
westerner wrote on Mar 18th, 2014 at 10:03am:
Harry, the two holes are were for holding a saddle ring.  On the military carbine model.   Joe.


Ye Gods and little fishes Joe, it's so obvious when someone else spots it. That's been bugging me for months. Thanks. It's no wonder the Carbines are scarce, Zischang must have cornered the market in unused  carbine actions the number of these I have come across that were modified by him.

Thanks to all,

Harry
  
Back to top
 
IP Logged
 
creedmoormatch
Ex Member


Re: What is the purpose of these two screws?
Reply #7 - Mar 23rd, 2014 at 12:08pm
Print Post  
   Ye Gads and Big Fishes, the two holes in question can not be both threaded for the reason that a "U" shaped staple with both male posts threaded as is shown could not conceivable be screwed into the receiver exterior side wall.

Of course, a threaded single post "eye" bolt with a circular ring manufactured into the eye is possible, as is used in the Winchester saddle ring carbines, but what is shown here is a two post "U" staple.

C.M.M.
  
Back to top
 
IP Logged
 
westerner
Frequent Elocutionist
*****
Offline


deleted posts and threads
record holder.

Posts: 12603
Location: Why, out West of course
Joined: May 29th, 2006
Re: What is the purpose of these two screws?
Reply #8 - Mar 23rd, 2014 at 2:24pm
Print Post  
Threads?   


  Joe.
  
A blind squirrel runs into a tree every once in a while.
Back to top
 
IP Logged
 
shovel80
Oldtimer
*****
Offline



Posts: 896
Location: Sonora,CA
Joined: Jun 6th, 2011
Re: What is the purpose of these two screws?
Reply #9 - Mar 23rd, 2014 at 3:08pm
Print Post  
Couldn't they have been threaded after the saddle ring bracket was removed??

Terry
  
ASSRA Member # 11021
Back to top
Facebook  
IP Logged
 
firearmdoc
Full Member
***
Offline



Posts: 198
Joined: May 19th, 2013
Re: What is the purpose of these two screws?
Reply #10 - Mar 23rd, 2014 at 3:13pm
Print Post  
I'm sure the holes were tapped aftr removing the staple as a means of filling the holes.

Jesse
  
Back to top
 
IP Logged
 
creedmoormatch
Ex Member


Re: What is the purpose of these two screws?
Reply #11 - Mar 23rd, 2014 at 3:14pm
Print Post  
Quote:
Couldn't they have been threaded after the saddle ring bracket was removed??
Terry


   Yes Terry, using a bottom tap when the breech block is in place and then the two "Blind Screws" added in order to fill the vacant unused holes.

  C.M.M.
  
Back to top
 
IP Logged
 
westerner
Frequent Elocutionist
*****
Offline


deleted posts and threads
record holder.

Posts: 12603
Location: Why, out West of course
Joined: May 29th, 2006
Re: What is the purpose of these two screws?
Reply #12 - Mar 23rd, 2014 at 4:55pm
Print Post  
shovel80 wrote on Mar 23rd, 2014 at 3:08pm:
Couldn't they have been threaded after the saddle ring bracket was removed??

Terry

  
A blind squirrel runs into a tree every once in a while.
Back to top
 
IP Logged
 
Page Index Toggle Pages: 1
Send TopicPrint
‹ Previous Topic | Next Topic ›
 
  « Board Index ‹ Board Top  

ASSRA Forum » Powered by YaBB 2.6.12!
YaBB Forum Software © 2000-2026. All Rights Reserved.

Valid RSS Valid XHTML Valid CSS Powered by Perl Source Forge

Page completed in 0.7183 seconds.