Adjusting the Matchdot II sight adjustment for different distances

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Adjusting the Matchdot II sight adjustment for different distances

Post by mikemyers on Wed Jul 26, 2017 10:16 pm

This thread is for mounting a Matchdot II red dot sight on a S&W Model 41 with Clark barrel.

When I spoke to Katie Zabel in Ultradot Technical Support, she told me to slide the sight as far back in the ring mounts as possible, so recoil from the gun wouldn't cause the sight to move towards the rear - it would already be as far back as it can go.  I noticed that when I adjusted the "cylinder" to set a zero reading for my first distance, the dot to align the cylinder with is obscured by the rear support ring.  You can see that in the top photo below.


As a test, I put a piece of tape on the side, and plan to set the "zero" reading so the mark aligns with the front edge of the tape.  If this concept works out, I'll eventually put a white dot there.


Question - am I missing something?  There should be an easier way to do this, but the only thing I can think of is to move the sight forward in the ring mounts.  It's not a big deal - either way should work fine, but using the white dot towards the rear is difficult with the sight clamped in place the way Katie suggested.
 

This way it is difficult to see the white dot, and the markings, especially in dim light.



With a small piece of tape (or a painted dot) on the side, it is much easier to use.
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mikemyers

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Re: Adjusting the Matchdot II sight adjustment for different distances

Post by joy2shoot on Wed Jul 26, 2017 10:35 pm

Mike, I don't think you are missing anything.  I had the exact same situation on my Model 41 with a Clark barrel.  But I left it the way Ultradot told you because I only changed elevation once in a match.  However, if you shoot the .22 for the entire 2700, you would be changing elevation a minimum of five times (50 to 25 in the .22 match, 25 to 50 and then 50 to 25 in the center fire match, and finally 25 to 50 and then 50 to 25 in the .45 match). 
 
Your idea of using a dot (use white nail polish) on the side of the scope should work...just don't lose track of which dot you are indexing on.  Personally, I would not use tape as there is a chance it might move slightly over time.

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Re: Adjusting the Matchdot II sight adjustment for different distances

Post by mikemyers on Wed Jul 26, 2017 10:47 pm

White nail polish!!!   Thanks!   I didn't want to paint it, and the tape was a quick way to take care of it for now.  I will buy the white nail polish next week, and do it properly, either a small white dot, or maybe I can mask it and make a white line.

I plan to send these photos to Katie, and maybe Ultradot can add a white mark to the next batch of sights, so it can be adjusted from the rear or from the side.
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Re: Adjusting the Matchdot II sight adjustment for different distances

Post by rreid on Wed Jul 26, 2017 10:59 pm

This might be the real answer to your problem

https://www.midwayusa.com/product/1477113938/weaver-top-mount-weaver-style-rings

I may be completely wrong, but I've always mounted my scopes as far forward as possible in the rings. According to Newton, the scope tends to remain at rest when the gun recoils back.
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Re: Adjusting the Matchdot II sight adjustment for different distances

Post by Aprilian on Thu Jul 27, 2017 8:51 am

I did as Ralph suggested, except I used the Leopuld rings.
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Re: Adjusting the Matchdot II sight adjustment for different distances

Post by james r chapman on Thu Jul 27, 2017 10:03 am

Newton is often right!
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Re: Adjusting the Matchdot II sight adjustment for different distances

Post by Magload on Thu Jul 27, 2017 2:42 pm

Just like mounting rings. Forward is the proper way.  Don
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