Need some assistance in scope ring calculations

[Fireguy0991]

I am going to buy a new scope and rings, going to a retailer is not good idea at this time so I going to order online.

I want to get the right ring height the first time and not go back and forth with exchanging items.

Here is my math do far

Outside diameter of the scope objective bell (d÷2) = ½ of D mm

Add ½ of d mm…. to…If I use a lens cover that must be added to it.

Here is where I am stuck
If I have a MOA base greater than 0. That cant will decrease the height of the rings.

So I think the first part of the math =(moa×1/60) eg =(10 MOA*1/60)= 0.1667. this number 0.1667 is inches? Do we convert to mm? =(0.1667*25.4) =4.2333 mm
Then there has to be length (from front of objective to front of base) added to the first half
Eg:
Outside diameter 50 mm ½ of 50 25mm
Thickness of cover 3 mm 03 mm
MOA cant + has to be added here
=28mm or 1.10 inches

 

[billbmcleod]

Don't be offended but if you are getting into moa cant you probably have enough experience to figure it out yourself.

 

[Paul_T]

http://www.mil-rad.com/scope_ring_calculator

 

[Fireguy0991]

Don't be offended but if you are getting into moa cant you probably have enough experience to figure it out yourself.

I am not offended....but everyone has to start somewhere. I am in the basement looking up to others to help me up.

 

[Winz]

Apart from the scope clearance calculator link above, take note that this would only be useful for minimum scope clearance.

My suggestion when considering a new scope setup would be to get the scope first then measure out not only clearance but also for fit to your rifle and body/eye. This can be easily accomplished with the 'coin stack' method to assist in figuring out ring height appropriate for clearance and also for body fit. Eg. the minimum clearance might not work for your cheek-weld with the stock and require higher rings.

I won't get into the scope height over bore discussion of zeroing and such as that opens up other adjustment and precision discussion. The key is about fit and if you can't see without straining, then you need to fix that first.