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How to Measure Scope Height: Simple and Effective Ways
- 4 min reading time
An inaccurate mounted scope can not only badly kneecaps the rifle's precision but influences the convenience of usage of the entire rifle itself.
Measur cope eight
- Measuring from base to ring's bottom edge.
Take the diameter of your objective lens in millimeters (the 2nd number in your optic's designation, like the 40 in 3-9x40mm), add 2 to 4mm for the thickness of the scope body (you can often get this specific number from the supplier if you like), and divide that result by half. If you favor an equation, it's (diameter + 2-4mm)/ 2 = scope ring height. Using our common 3-9x40mm range instance and a middle ground of a 3mm scope body, it resembles this: (40 + 3)/ 2 = 21.5 mm center height.
A little thicker, however still manageable. Separate the measurement of your scope tube (usually either 1 inch or 30mm) by 2 and also add the producer's sight ring height. A 1-inch tube = 25.4 mm, so half of that would be 12.7 mm. You'll still have to account for your objective lens, however. Just divide your objective lens by 2 as well as ensuring that number is smaller sized about the scope ring height which you'll clear the barrel. Those calipers I pointed out will certainly be the handiest method to make sure you have got it right before you hit the "BUY" button online.
Choosing the right rings
As soon as you understand what's your scope height is, you will be clear on the minimum height that the centreline of the scope must sit above the receiver. Currently all that is left is to purchase the tiniest ring as well as base combo that's higher than this measurement.
If you have any questions or need any kind of explanation on the process, sound off in the commments and let us know! And if you're seeking a brand-new range scope, head on over to our checklist of the rifle scopes under $200!
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