Barrel Droop

John,

I switched scopes from the Nikons I used to run to a few Discovery models.. 
As soon as they were installed on my rifles, I ran into the same issue that you are having.. 
When trying to sight them in, they both ran out of elevation 'clicks'..

Hajimoto suggested that I look into a set of FX No Limit rings.. 
I did, and Wow! What a difference! Now, those rings are the only ones that I run.. 

I went through AoA since at the time, they were the only shop that had 30mm in stock.. 
Here's a link if you'd like to check them out:

https://www.airgunsofarizona.com/index.php?p=catalog&mode=search&search_in=name&search_str=no+limit 

 

Sam -

+1 will solve your problem

I mounted mine uphill towards the front site,properly just semantics,I did see 20 degree on Mac1 air gun site a while back....I used the10 on my RWS52,it worked..On another air rifle 10 was not enough,I use a shim in the forward ring.Good luck.

How do those work?

Does that center screw allow the mount to slide up/down independently ?

Do they pivot some as well, to prevent kinking the scope tube ?

There was a thread on another type of vetically adjustable mount recently and several people said it worked very well. NcStar if I remember correctly and they weren't very expensive. I use Sportsmatch elevation and windage adjustable rings on several rifles myself and like them a lot but I intend to try the NcStar rings at some point. Never tried the FX myself but I do believe that they may pivot (may be incorrect) but they aren't adjustable for windage.

The FX no limit rings do pivot as well as move up and down, Bill

The FX No Limit rings compensate for elevation only - no windage.

Basically, each ring has the upper mount and lower mount.. 
The two join together and use a through bolt to secure. 

When adjusting.. You get bases mounted to the rail, scope mounted to the rings, 
make sure they're all nice and tight.. From there, the adjustments begin..

Start up front, and tighten the front bolt just enough to create drag/friction 
when lifting the rear of the scope up/down.. This keeps the scope in place 
vs. having to hold it.. When you're happy with the angle, tighten the rear bolt.. 
To finish, tighten the front bolt. The angle/range is great! 

I use two sets, but, use the two scope/ring combos on 5 different pcp rifles, 
and all of them work flawlessly now, and when zero'd in, the elevation turret is centered.. 

A far stretch from where they started out - Probably needing another 10-20 clicks past max..

I bottom both of them out flat, then lift the rear about 1/2 way up and tighten.. 
Amazingly, that worked perfectly the first time, so, I use that same method every time.

Hope that helps clear things up.

 

Sam -

...

http://Watch "Adjustable scope mounts Review" on YouTube https://youtu.be/eYl7-Yvepcc

Click to expand...

Nice comparison. I would like to have seen him do the closer together position for all 3 with degrees for that as well. I would also note that he mentioned 1 (FX) and 2 (EagleVision) locking screws for the mechanism. I don't think he mentioned that the SportsMatch rings also use 1 locking screw and that it is in the front/back of the mount, not on the side like the others. Actually a little harder to get to than the others but not too bad. Would like to have seen the NcStar rings others have noted in this comparison as well as they are inexpensive compared to all of these.

Another option that I have used and worked very well and inexpensive.

https://us.hawkeoptics.com/mount-inserts-30mm.html

The DNT034 is a 20" compensator mount for older Diana airguns. It will fit yours if you grind the recoil stop off the end.

I did and worked fine.

I put FX no limit rings on a springer. You will have to be diligent about keeping the rings vertical adjustment tight. I had to clean the joint with brake cleaner and use lock tight in the joint to keep it from moving on a Walther Terrus, not a hard recoiling springer, with a light 2X7 Hawke scope on it.

I put FX no limit rings on a springer. You will have to be diligent about keeping the rings vertical adjustment tight. I had to clean the joint with brake cleaner and use lock tight in the joint to keep it from moving on a Walther Terrus, not a hard recoiling springer, with a light 2X7 Hawke scope on it.

Click to expand...

If it was movement in the vertical adjustment of the mount, then this could be an advantage of the SportsMatch rings. They use a screw to adjust elevation. But this would be a first mention I've ever heard of the FX rings changing in that way. Seems most people have excellent results with them. Are you sure the mount isn't sliding on the dovetail?

Sorry, the mount is DN034, no t. It is an older mount for diana guns with t05 trigger. I just found it on ADORAMA, under utg droop compensating mounts.. Sorry to say, it is on backorder.

I missed your question on this, it wasn't sliding, this Terrus had huge droop, is why I tried the rings. I could tell the gap was closing as I shot the rifle. A call to the supplier (AOA I think) revealed that No Limit rings are not recommended for springers. After cleaning and locktite in the groove, not threads, they have stayed put since.