The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > The Smithy

Reply
 
Thread Tools
Old September 10, 2012, 09:52 AM   #1
ligonierbill
Senior Member
 
Join Date: May 20, 2007
Posts: 754
Frozen dovetail

Any tricks, secret penetrating oil, or spells to get an old, frozen dovetail sight to move? Trying to remove the rear sight on a Savage 99 to use a Marvel tang-mounted aperture.
ligonierbill is offline  
Old September 10, 2012, 11:11 AM   #2
Doyle
Senior Member
 
Join Date: June 20, 2007
Location: Starkville, MS (new to MS)
Posts: 4,707
Are you sure you are driving it the right direction? Some of those dovetails are ever so slightly tapered. On those, you have to drift it out the direction opposite the taper. Normally, the open end is to the right as you sight down the barrel.
Doyle is offline  
Old September 10, 2012, 11:22 AM   #3
Ruffasacob
Junior Member
 
Join Date: April 25, 2012
Posts: 4
Also make sure the dovetail is held close to the jaws of a padded vise as you drive the sight out. The farther away from the vise the dovetail is, the more spring you will have in the barrel.

Ruff
Ruffasacob is offline  
Old September 10, 2012, 01:13 PM   #4
James K
Staff
 
Join Date: March 17, 1999
Posts: 19,286
I have had to cut them out with a Dremel tool or a hack saw; it works, but please be careful. To do that, you cut crosswise, right across the center of the dovetail, being very careful not to mark the barrel. Once a slot is cut, pressure on the dovetail is removed and the two pieces fall out.

The barrel slot can then be filled with a dovetail blank, which can be bought from Brownells or made.

Jim
__________________
Jim K
James K is offline  
Old September 10, 2012, 03:33 PM   #5
ligonierbill
Senior Member
 
Join Date: May 20, 2007
Posts: 754
Thanks for the advice. As luck would have it, I am driving it left to right. It may come to cutting it, but I wanted to save the sight. I got the dovetail plug with the tang sight. Anyone had success with heating?
ligonierbill is offline  
Old September 10, 2012, 04:02 PM   #6
mapsjanhere
Senior Member
 
Join Date: August 6, 2009
Location: Albuquerque
Posts: 2,346
I usually swear by Kroil, if that doesn't get it loose it's cutting time. You might try heating with a heat gun, just in case someone "fixed" it with a drop of loctite at some point, or get a piece of dry ice and try to chill the dovetail selectively.
__________________
F 135 - the right choice
mapsjanhere is offline  
Old September 11, 2012, 07:19 AM   #7
cecILL
Senior Member
 
Join Date: August 13, 2001
Location: central IL
Posts: 471
Have had sucess with a deep freeze.
cecILL is offline  
Old September 11, 2012, 07:49 AM   #8
Sport45
Senior Member
 
Join Date: May 25, 1999
Location: Too close to Houston
Posts: 4,051
Get the whole shabang hot with a heat gun. Then apply the corner of a piece of dry ice to the sight. Tap it out before it all comes back to the same temperature. It might work with regular ice, but dry ice ice is better and more fun to play with anyway.

I haven't tried this with sights, but it has worked with other interference fit parts.
__________________
Proud member of the NRA and Texas State Rifle Association. Registered and active voter.
Sport45 is offline  
Old September 13, 2012, 08:24 AM   #9
ligonierbill
Senior Member
 
Join Date: May 20, 2007
Posts: 754
Finally cut a slot with a triangular file and a hacksaw. When I put the dovetail blank in, I wrote down the direction (yes, it's tapered) so I can get that out without drama if necessary. A note on the Marble aperture sight. It comes with 3 screw in apertures, and with the finest one on the bench, I was able to shoot <2" groups (100 yd). Adjusting is a little funky, as moving horizontally would also move the group vertically and vice versa. Great once dialed in, though. The fine peep looks a little tight for hunting, so I installed the middle size. Very fast target acquisition.
ligonierbill is offline  
Reply

Thread Tools

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 09:35 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.07723 seconds with 9 queries