Scope Ring Height for Anschutz

[james]

I have a question about scope ring height selection. I was going to make this a long winded post however will cut to the chase. I am going to use my Anschutz 64SBR for long range rimfire matches, see picture of rifle with Weaver 36. I am going to mount a Sightron 8x32 30mm scope on it using Burris Signature 30mm rings. Do I need high or extra high rings - will be using various inserts to make distance. Tried using online ring height calculators however still not certain on height needed.

Thanks much!

 

[centershot]

When I shot mine in gallery matches, I used the highest Burris rings they made. Would gladly sell them for a very low price, but they are 1". Nice to get your cheek off of the stock.

 

[butchlambert]

I will use Kelbly tall 30mm rings on my 1913 with a Leupold 45x.

 

[wkdickinson]

I just mounted a Sightron SIII 45X45 ED on my Anschutz 1413. My rifle does not have holes drilled in the receiver for bases, so I had to use a rail that slid into the grooves and then was clamped with set screws. I had a new set of Warne extra-high 30mm rings, so I used those and am very pleased with the scope height.

 

[butchlambert]

Remember that most folks have rings for the rimfire dovetail and superfluous adapters are unnecessary.

 

[dhagerty40]

just go with this:
The Weaver has a 44mm objective
The Sightron has a 56mm objective
So you need to bring the scope up 6-8mm (about a 1/4-.3" ) just to bring scope to about same position as the weaver and to prevent hitting the barrel. Now, adjust the height from there to your comfort.

This is a rough way to figure it out.

 

[centershot]

I believe that I had a rail that went into the Anschutz that made the sites higher. Like a sub rail.

 

[USMCDOC]

just go with this:
The Weaver has a 44mm objective
The Sightron has a 56mm objective
So you need to bring the scope up 6-8mm (about a 1/4-.3" ) just to bring scope to about same position as the weaver and to prevent hitting the barrel. Now, adjust the height from there to your comfort.

This is a rough way to figure it out.

 

[grauhanen]

The key information to know when determining the ring height that's required for a certain scope is the outside diameter of its objective bell. On a Sightron SIII 8-32X56, the OD of the larger objective bell is 2.6" or 66.04mm. This means that the center of the scope tube must be more than half the diameter of the OD of the objective bell -- 1.3" or 33.02mm -- above the barrel. (Some barrels aren't as high as the top of the receiver, where the rings are mounted and this means that ring heights can me a little less than the calculations would otherwise suggest.)



The height of the Burris Signature Zee rings are shown in the Burris chart below. The Signature Zee 30mm Extra High rings are 1.18" or 29.97mm from the base bottom to the middle of the scope tube.



At this point it's possible to do some basic math and determine whether the Extra High rings will be high enough for the SIII 8-32 scope. The scope needs rings more than 1.3" or 33.02mm and the rings at 1.18" or 29.97mm high, on their own are not sufficiently high.

But the question is not yet completely answered. The base on which the rings are mounted adds some height to the rings. How much height is added depends on the particular base used.

Below is an image from a ring height calculator. It converted all the measurements to millimeters.

It's important to note that the calculation makes no provision for clearance for scope lens covers. More important, the height of the scope base was not inputted to the calculator. The calculator shows that without the height of the base in the equation, the scope with Extra High rings fails by 0.12" or 3.05mm.

That means that if you use a scope base that is more than 0.12" or 3.05mm in height there will be enough ring height with the Burris Signature Zee Extra High rings. A little more than that will allow for the use of lens covers.




The ring height calculator is available online at http://www.mil-rad.com/scope_ring_calculator

 

[fkimble@charter.net]

"will be using various insert"

When using inserts for extended distance, you will be raising the back of the scope and or lowering the front of the scope. Depending on how much scope extends past the front ring, the clearance for the front end of the scope can decrease a fair amount. Like wise the rear of the scope will rise but less than the front since usually less scope is rear of the rear scope rings. Basically the scope will be pivoting off the bottom of the front scope ring.

Frank