tang sight cant

JollyWhiteGiant · Post by **JollyWhiteGiant** » Mon Mar 31, 2008 7:19 pm

I installed a Lyman #2 on my Winchester 94. I had to drift the front sight about 1/8" to the left to get it sighted in on paper. can you shim the sight to get it centered? how do you keep the shim from comming out the side?

Modoc ED · Post by **Modoc ED** » Mon Mar 31, 2008 7:23 pm

Yes, shim it with a piece of aluminum pop or beer can. When I've done it, I've put the shim close to either the top screw or bottom screw so as to get more down-pressure to hold the shim tightly. If you put it in the middle, it will not be held as tightly. Of course, you could make a shim the complet length of the distance between the two screws but it is not necessary.

JollyWhiteGiant · Post by **JollyWhiteGiant** » Mon Mar 31, 2008 7:38 pm

just run it under the one side? how wide does it have to be?

sorry dumb question but I would like to do it righ tthe first time.

Pete44ru · Post by **Pete44ru** » Mon Mar 31, 2008 7:57 pm

Run the shim under one side, make it about 1/8" wide and place it close to the edge of the sight base.
Double check, every time you use the gun, that the tang and front base screws are tight.

I use a piece of those phoney plastic credit cards, that come in my junk snailmail, for shims. I color any edge that shows with a black or blue Sharpie.

Sixgun · Post by **Sixgun** » Mon Mar 31, 2008 8:16 pm

Don't touch your front sight. First set your rear sight and if any fine tuning is neeed, then play with the front sight.

I make my shims in one piece about 3/16" wide and the length is the distance between the two screws, including the screws and about 1/8" past them. Shims made for Winchesters are about 2 and 1/2" long. I leave about 1/16" hang over, with the rest under the sight base. I cut out a little where the screws are. I darken the part hanging over with a magic marker.

Business cards are about .012 thick and are excellent when you want the point of aim to move about 2" @ 25 yards. Cardboard from the boxes that primers come in (main box of 1K) better for more drastic changes of impact. A tiny bit of sticky glue helps to hold it in place while tightening it down but is not needed if your patient. --------------Sixgun

Ben_Rumson · Post by **Ben_Rumson** » Mon Mar 31, 2008 9:07 pm

My approach is once I have established the correct elevation for zero.. I then calculate how much the sight has to be shimmed to get impact to be centered right & left... What you do is convert the range you've established elevation at.. Say 100 yards,, That would be 3600 inches..then divide the distance between the back of your peep sight and the rear of your front sight.. Say that distance comes out to 26 inches.. 26 divided by 3600 = .0072..
The .007 represents seven thousandths of an inch, which will move your point of impact @ 100 yards one inch.. So if you need to move POI 2 inches you need a shim about 14 or 15 thou thick.. Paper is often found under the sights on old guns.. so just about anything will work.. I too use the bogus credit cards sent in the mail.. I like to go with shims that don't compress.. good luck

Gun Smith · Post by **Gun Smith** » Tue Apr 01, 2008 10:49 am

I use that aluminum duct tape that AC installers use. It has adhesive on one side. I use several layers for the cant I need. 6" of it will last forever. Find a guy installing units, he'll give you some.