Measuring Scope Height??

[Moman]

When inputting data into a balistic program, how accurate does the scope height data have to be? I've been trying to get everything dead nuts. How do you get an accurate measurement for this?

 

[britz]

To see how accurate the mesurement has to be simply put in a few different numbers and see how different they come out.

I beleive the most accurate way to measure the scope height is to take the rifle out of the stock, use a caliper and add up the following numbers:
A) measure the diameter of the chamber under the scope tube and devide by 2

B) Measure the distance beween the scope and the chamber.

C) Measure the outside diameter of the scope tube and devide by 2