SCOPE MOUNTS, UNERTL TO RINGS

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  • Last Post 05 May 2019
joeb33050 posted this 04 May 2019

 

 

 

SCOPE MOUNTS, UNERTL TO RINGS

 

 

 

I have used airgun/rimfire rings to mount internally adjustable scopes on Unertl-style scope blocks for years. This makes me feel goosey to look at, and I restrict use to rimfire and low energy centerfire loads, but it works just fine.

 

 

I need a 22 rifle for the Barrel Pressure Manager test, and started looking into the rimfire dovetail mounts-I want to mount a T36 on the 22.

 

At https://www.amazon.com/s?k=11+mm+scope+rings&hvadid=78340256622222&hvbmt=be&hvdev=c&hvqmt=e&tag=mh0b-20&ref=pd_sl_7hv9oe3bx4_

 

the Amazon response, I was delighted to find the many interesting and inexpensive rings/adapters there. Examples:

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joeb33050 posted this 04 May 2019

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John Alexander posted this 04 May 2019

I have done a somewhat similar thing by mounting a Weaver base on a sawed off dovetail sight and hanging the scope in one ring on a Winchester 1892 short rifle.  It is a terrible looking thing to do to a great looking rifle (I saw too many westerns as a kid). But it allows me to test loads without worrying whether it's the load or my eyes' limitations with the tang sight.  

Your top picture looks like a solution to a 52 with scope blocks I have but not scope to go on them. Thanks for the idea.

John

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45 2.1 posted this 04 May 2019

This is interesting............. but I have a question since Joe has already done this. Are the target scope block bases (on a Win 52 or any other) 11mm?

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John Alexander posted this 04 May 2019

This is interesting............. but I have a question since Joe has already done this. Are the target scope block bases (on a Win 52 or any other) 11mm?

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Oops.  I jumped to that conclusion from Joe's post but on my careful reading -- maybe not.

John

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joeb33050 posted this 04 May 2019

Scope blocks are .375", see Seve Earles page for details; 11mm = .433", roughly, so diff is .058" and most rings etc can't tell the difference. Look at some deswcriptions on the Amazon pgs.

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singleshot posted this 05 May 2019

Kelbly rings fit the Unertl bases.

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BudHyett posted this 05 May 2019

Ruger Blackhawk in .30 Carbine, mounting a scope forty years ago. There was not the mounts nor even the scopes available then that we have now. The answer was a Davis long eye relief adaptor on a Weaver K4, this cut the power to 2X. Unertl bases on the barrel and .22 rimfire Weaver bases. We started with one base and one scope ring, but the .30 Carbine recoil moved the scope. We went to two bases and two rings. 

The problem is getting enough purchase on the base to keep the scope from sliding under recoil. Eventually, we drilled through the ring bottom half and the base, installed a drill rod just high enough to allow the rings to come off and which protruded enough to stop the ring movement. Lots of experimentation, but success. In the next five years, there came bases and scopes for handguns.

Five years ago, wanted to switch to internal adjustment scope on my CPA Stevens 44 1/2. Remembering the Ruger .30 Carbine adventure, I started a new search. CPA offers a Weaver base which can be added, but this required drilling and tapping another hole. Weaver bases can be bought with hole dimensions the same as Unertl bases, but you are switching bases out for each change and that is time consuming. 

Frank Russell offers an adaptor that slides over the Unertl-style bases and clamps on them. There may be other products similar in function. To switch barrels, requires removing the scope, removing the base and then switching barrels. Then adding back the adaptor and the scope.This adaptor returns the scope close enough to be on paper after a barrel swap. 

With the earlier .30 Carbine experience, I do not trust a single ring on the scope. And I like keeping the Unertl bases on for shooting ASSRA and ISSA Traditional matches.

Farm boy from Western Illinois, living in the Magical Pacific Northwest

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joeb33050 posted this 05 May 2019

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joeb33050 posted this 05 May 2019

Some of the rimfire/airgun rings have a pointed pin that goes into the block.

Steve Earle could make a block long enough to hold both rings, same hole spacing as regular block.

or, the cantilever above.

There are several ways to approach cat skinning.

 

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