scope mount windage off
by bj 
, Wednesday, May 17, 2017, 23:07 (2748 days ago)
Scope mount on a Contender barrel is off in windage by roughly 50 m.o.a., mounting a scope that can adjust about 35 m.o.a. so it's about 15 m.o.a. shy of being able to be sighted in. I think I can shim the mounts to gain about 4 to 6 m.o.a., still not enough. So how can I adjust the mount sufficiently?
This is not the type of mount with windage screws on one end. Since shimming won't work it seems that the only choice is to rearrange the rings to see if there is another combination of ring positions that manages to align better.
50 MOA?!!? Holy cow!
by Hoot , Diversityville, Liberal-sota, Thursday, May 18, 2017, 06:50 (2748 days ago) @ bj
That's severe. What about Millett Angle-Loc rings? I don't know how much they can adjust but you can get something out of them.
scope mount windage off
If it is the screw holes in the barrel that are off that much I would contact T/C and see if they would help (replace or fix). Other than that, you may want to try the Burris Signature rings.
maybe not the holes
by bj , Thursday, May 18, 2017, 20:04 (2747 days ago) @ Jimmy P.
The bottom of the mount is concave and sets solidly on top of the round barrel, so it could be the concave part that is off.
I think this particular mount actually is a Burris.
I'm going to try swapping the rings around, then might even try shimming. But the shimming will require 2 thicknesses of soft drink can in each ring which might not even fit.
I think the ring system Jimmy P is talking about...
by rob , Friday, May 19, 2017, 07:32 (2747 days ago) @ bj
Either comes with shims or its adjustable. I forget exactly which base and rings it is but I've used one in the past on another rifle besides my Guide Gun. It definitely lets you add in some windage adjustment when you mount the scope. Now I'm curious because I know I have a scope mounted on something in the rings he mentioned...I'm gonna figure it out....
Link....
by rob , Friday, May 19, 2017, 07:37 (2747 days ago) @ rob
It uses shims inside the rings to change windage and elevation. I did have a scope mounted in these and it worked well but I can't remember what it was for the life of me. https://ads.midwayusa.com/product/712472/burris-1-signature-ring-pos-align-offset-inser...
My Guide Gun has the same issue...
by rob , Thursday, May 18, 2017, 08:16 (2748 days ago) @ bj
But the rifle is so incredibly accurate there is no way I was going to send it back. My solution was the Redfield Jr or Leupold Mount (I forget which one it is) with rear windage screws. That solved my problem.