The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > The Harley Nolden Memorial Institute for Firearms Research

Reply
 
Thread Tools Search this Thread
Old June 11, 2018, 10:05 PM   #1
brotherg
Member
 
Join Date: February 6, 2016
Location: Payne Springs, Texas
Posts: 56
Finnish Mosin Head space Fails Field Gauge


Last edited by brotherg; June 15, 2018 at 09:14 AM. Reason: no replies and it may cause someone else to be unsafe
brotherg is offline  
Old June 15, 2018, 12:25 PM   #2
T. O'Heir
Senior Member
 
Join Date: February 13, 2002
Location: Canada
Posts: 9,671
Means the headspace is excessive and you should not shoot the rifle with any ammo. Likely due to the rifle being assembled out of a parts bin. Mind you, the headspace gauge brand might matter. The 7.62 x 54R uses the same gauges as the .303 Brit.
Gunparts sells Mosin M1891 bolt heads for $18.90 without an extractor.
Where'd you buy the rifle? Any warrantee?
__________________
Spelling and grammar count!
T. O'Heir is offline  
Old June 15, 2018, 05:31 PM   #3
brotherg
Member
 
Join Date: February 6, 2016
Location: Payne Springs, Texas
Posts: 56
Pawn shop buy. No warranties. I have another Mosin to compare the headspace gauge. It is good. Do not plan to shoot it if or until I get the headspace sorted out. I am working with an ebayer to hopefully get one in spec. I am getting a real vernier caliper tomorrow to take some measurements. It is a good looking rifle, bore is good, good rifling, there does seem to be damage to the back of the locking lug. Must be soft as it has some metal peeling up. I think a proper bolt head will fix it.
brotherg is offline  
Old June 16, 2018, 06:38 AM   #4
mehavey
Senior Member
 
Join Date: June 17, 2010
Location: Virginia
Posts: 5,006
Quote:
damage to the back of the locking lug. Must be soft as it has some metal peeling up
That would be major red flag for me as to salvageability, particularly as excessive rim clearance cannot be solved in handloading.

Will the different bolt bolt from the other Mosin fit for a check?
mehavey is offline  
Old June 16, 2018, 07:19 AM   #5
brotherg
Member
 
Join Date: February 6, 2016
Location: Payne Springs, Texas
Posts: 56
I will try and post some pics.
brotherg is offline  
Old June 16, 2018, 12:17 PM   #6
T. O'Heir
Senior Member
 
Join Date: February 13, 2002
Location: Canada
Posts: 9,671
Metal doesn't just 'peel'. That'd be a huge issue for me too.
The issue with the Gunparts bolt head is that they don't mention any dimensions of 'em. Means you have to buy a fistful to try with a headspace gauge(you'll need a set, not just a No-Go or Field too) until you find one that is good. Just like a No. 1 Lee-Enfield.
I wouldn't 'work with some guy from E-Bay' either(aside from E-Bay being rabidly anti-firearm ownership). You need a smithy who knows Mosins. Dunno how prevalent those are, anywhere, never mind Texas.
Like mehavey says, excessive rim clearance cannot be solved in handloading. Needed to be bigger. snicker.
__________________
Spelling and grammar count!
T. O'Heir is offline  
Old June 16, 2018, 03:36 PM   #7
brotherg
Member
 
Join Date: February 6, 2016
Location: Payne Springs, Texas
Posts: 56
https://imgur.com/twT4gYf

I get it. If someone knows where to get a handful of bolt heads to try I am game.

Since the damage to on the bolt head, I am hopeful, Need to find out why and how it got that way.

I will look around for a smith.
brotherg is offline  
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 05:57 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2018 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.04715 seconds with 10 queries