Parallax Wheel Interference Issue

Diehard50248 · Feb 23, 2025

I recently purchased a very nice TX200 MkIII with a Sightron S-TAC 4-20x50 scope from a fellow AGN member. The rifle works flawlessly and is very accurate. The only issue is the scope isn’t level with the rifle. This would be an easy fix if it weren’t for the parallax wheel. When level, the wheel interferes with the gun’s stock. I‘m primarily a small game hunter but I was hoping to give Field Target a try in the Spring, so accuracy matters.

I’m hoping people with more experience could layout some options. Here are the ones I can think of:
1) Buy a smaller wheel. The one that came with the sale has a 5” diameter. I think a 4” wheel would do the trick.
2) Carve a chunk out of the stock to provide clearance to the wheel. This is NOT an option for me. This rifle is way to nice to do that.
3) Do they make parallax knob extenders? I figure moving the wheel out 1/4” would do the trick.
4) Rotate the scope out-of-level to avoid the interference.
5) Other…Is there a simple fix to this situation that I’m just not seeing?

Motorhead · Feb 23, 2025

Given grub screws holding wheel on could come out on knob a bit & still hold on ... Spacer within the cup that slides over knob moving wheel out a bit

Change wheel to a Nautilus or Hatchet profile

dgeesaman · Feb 23, 2025

Having the scope off vertical is definitely a no-go for me.

I have one where the problem came about from a loading lever on the left side of the action. So far my solution has been a custom 3d printed nautlius style wheel.

But first I'd try Motorheads suggestion of a spacer. If that doesn't work, then I'd do a 3.5 or 4" wheel since you're not ranging for a competition setting.

Pea-shooter O.G. · Feb 23, 2025

Like Motorhead suggested, I did something similar by finding an Oring that fit in the hub of the scope wheel to act as a spacer.

Richely · Feb 23, 2025

Different scope, different wheel, similar issue. Wheel scuffed against shoulder of rings. With wheel off scope and fully supporting outer ring gently pressed hub inward a bit to change the offset. Wheel is aluminum and will give a bit. Firm, steady pressure, don’t hammer it.

My 2¢ worth. YMMV. Etc.

Smok3y · Feb 23, 2025

Spacer like said above or new scope wheel. Talk to the maker about giving you enough space to clear the rifle. When Scopewerks made one for me, how far out the wheel needed to be for my rifle was one of the specs that we measured. He sent me a template to test before making it.

Star7 · Feb 23, 2025

It looks from the photo that you only need to trim the width of the wheel by a very small amount to clear. As smok says scope werks gave out a template that helps prevent this sort of thing.

Matt247365 · Feb 23, 2025

The thin, circular webs that attach the outer ring to the hub look like they could be bent/tweaked/moved easily.
Set it up in an arbor press with the outer ring supported and apply pressure to the hub.
Should be able to move it just enough to solve your clearance issue.
Measure it first so you know where your starting point is.
A drill press would probably also work.

Diehard50248 · Feb 23, 2025

I forgot to mention the wheel already has an o-ring spacer to offset the wheel from the scope’s parallax dial.

I’m liking the idea of pressing the center of the wheel to bend the aluminum out a bit. I’ll give that some more thought.

Thanks!

Diehard50248 · Feb 23, 2025

Bending the wheel worked! The scope and the rifle are now aligned, level, and the wheel doesn’t rub. My method was a bit unorthodox but it did the trick.

AGN comes through again! Thanks for your help!!!

Jeff

Frank in Fairfield · Feb 23, 2025

Higher rings to get the wheel above the stock..

marflow 777 · Feb 23, 2025

might find something here
https://jdscustomdesign.com/scope-wheels

Deerstalker · Feb 23, 2025

Diehard50248 said:
I recently purchased a very nice TX200 MkIII with a Sightron S-TAC 4-20x50 scope from a fellow AGN member. The rifle works flawlessly and is very accurate. The only issue is the scope isn’t level with the rifle. This would be an easy fix if it weren’t for the parallax wheel. When level, the wheel interferes with the gun’s stock. I‘m primarily a small game hunter but I was hoping to give Field Target a try in the Spring, so accuracy matters.

I’m hoping people with more experience could layout some options. Here are the ones I can think of:
1) Buy a smaller wheel. The one that came with the sale has a 5” diameter. I think a 4” wheel would do the trick.
2) Carve a chunk out of the stock to provide clearance to the wheel. This is NOT an option for me. This rifle is way to nice to do that.
3) Do they make parallax knob extenders? I figure moving the wheel out 1/4” would do the trick.
4) Rotate the scope out-of-level to avoid the interference.
5) Other…Is there a simple fix to this situation that I’m just not seeing?View attachment 541410

This may help & it is a pic of my HW95L .22 with a Hawke 4-16 x 44 mm Airmax compact mounted with Hawke tactical 2 piece medium rings that gives a little less than 1/8" clearance for the objective. Parallax wheel fits between or just inside/above the rifle top stock rail.

cavedweller · Mar 4, 2025

Diehard50248 said:
I recently purchased a very nice TX200 MkIII with a Sightron S-TAC 4-20x50 scope from a fellow AGN member. The rifle works flawlessly and is very accurate. The only issue is the scope isn’t level with the rifle. This would be an easy fix if it weren’t for the parallax wheel. When level, the wheel interferes with the gun’s stock. I‘m primarily a small game hunter but I was hoping to give Field Target a try in the Spring, so accuracy matters.

I’m hoping people with more experience could layout some options. Here are the ones I can think of:
1) Buy a smaller wheel. The one that came with the sale has a 5” diameter. I think a 4” wheel would do the trick.
2) Carve a chunk out of the stock to provide clearance to the wheel. This is NOT an option for me. This rifle is way to nice to do that.
3) Do they make parallax knob extenders? I figure moving the wheel out 1/4” would do the trick.
4) Rotate the scope out-of-level to avoid the interference.
5) Other…Is there a simple fix to this situation that I’m just not seeing?View attachment 541410

This is a 6” eccentric wheel made specifically for the S-Tac by Eric Sanders of Scope Werks. The S-tac presents some design challenges do to features on both the magnification ring and parallax knob profiles. Scope Werks has pretty much worked all the bugs out and a 6” wheel is worth the money

glr59 · Thursday at 6:23 AM

Diehard50248 said:
I recently purchased a very nice TX200 MkIII with a Sightron S-TAC 4-20x50 scope from a fellow AGN member. The rifle works flawlessly and is very accurate. The only issue is the scope isn’t level with the rifle. This would be an easy fix if it weren’t for the parallax wheel. When level, the wheel interferes with the gun’s stock. I‘m primarily a small game hunter but I was hoping to give Field Target a try in the Spring, so accuracy matters.

I’m hoping people with more experience could layout some options. Here are the ones I can think of:
1) Buy a smaller wheel. The one that came with the sale has a 5” diameter. I think a 4” wheel would do the trick.
2) Carve a chunk out of the stock to provide clearance to the wheel. This is NOT an option for me. This rifle is way to nice to do that.
3) Do they make parallax knob extenders? I figure moving the wheel out 1/4” would do the trick.
4) Rotate the scope out-of-level to avoid the interference.
5) Other…Is there a simple fix to this situation that I’m just not seeing?View attachment 541410

Try Eric Sanders of scope works. I suspect he can make a wheel with proper offset.

Search

Search

Parallax Wheel Interference Issue

Diehard50248

Member

Motorhead

Member

dgeesaman

Member

Pea-shooter O.G.

Member

Richely

Member

Smok3y

Member

Star7

Member

Matt247365

Member

Diehard50248

Member

Diehard50248

Member

Frank in Fairfield

Member

marflow 777

Member

Deerstalker

Member

cavedweller

Member

glr59

Member