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This measurement will give you the desired saddle height which is the measurement from the top of the scope railmount to the bottom of the scope tube. Use this simple calculator to figure out if the scope and ring combination youre using will clear the barrel of your rifle when fitted.
Ordering Your Scope Rings.
How do you measure scope height. To get a rough measurement o the scope height just take the scopes objective lens diameter usually measured in millimeters add 2-4mm depending on the thickness of the scopes body and divide the result by two to estimate the scope height. If you want a bit more accurate measurement you can just calculate the diameter of the scope body at the objective lens and divide that number by. Sam demonstrates easy ways to check your scopes height for input intoa ballistic solver and discusses why its important.
Measuring Scope Height Approximately. To arrive roughly at the scope height measure the diameter in mm of the objective lens the leading lens add 2-4mm for the thickness of the scope body and half the result. That figure is your scope ring height.
Another way to do it is to measure the scope tube diameter at the objective lens and half that. Measuring Scope Height. Start off by measuring the diameter of your front lens.
Increase this figure by around 3mm to account for the thickness of your scope. Take half of this number which is now your scope height. You can also look at this as the distance from the middle of the scopes figure to the thickest area of the exterior of the scope tube.
This measurement will give you the desired saddle height which is the measurement from the top of the scope railmount to the bottom of the scope tube. In the illustration below the saddle height is labeled B. Ordering Your Scope Rings.
When ordering rings make sure you read the heights carefully. Do not go by Low Medium etc. This is an arbitrary term and varies greatly from one.
Streloks site says this. Measure the diameter of the scope bell on the end from side to side not the circumference and divide that number by 2. Measure the barrel diameter just under or ahead of the scopes bell also divide by 2.
What scope height is and how to measure it - YouTube. All you have to do is add up the height of the ringthe bottom part where the scope tube rests plus 12 the diameter of the scope tube. You may have to convert between mm and inches somewhere along the line but Google does that for you.
The scope height is the vertical distance between that line of sight and the point where the centerline of the rifles bore intersects the plane of the crown. A wedged base really has nothing to do with it as that may be canceled by an offset reticle in the scope. Scope ring height is the distance measured from the midpoint of the scope to the thickest point of the tube exterior.
How to determine scope ring height Basic principle. The general rule that applies to most firearms is that you should fix the scope ring at the lowest possible level but the precaution is it should not touch the base. Divide the measurement of your scope tube usually either 1 inch or 30mm by 2 and add the manufacturers scope ring height.
A 1-inch tube 254mm so half of that would be 127mm. Youll still have to account for your objective lens though. How to easily figure out scope ring heightusing pennies.
How to Determine the Proper Scope Ring Height MidwayUSA Gunsmithing - YouTube. Centerline of scope to centerline of bore. Get a rough measurement of height and put that into a ballistics program.
Next shoot at the high point of the trajectory to zero the gun and scope. Then shoot at 55 and 10 yards and record the actual number of clicks or holdover to. Measure from the center of the scope to the center of the bore guidecleaning rod.
Below is a formula to help you be a little more precise when determining sight height. 1 Measure the bolt diameter and divide it in half. 2 Measure the scope tube diameter and divide it in half.
Measure from the center of the bore up to the center of the scope tube or lens. This is only needed if using a ballistics program or chart to determine point of impact. Depends on how close to 100 yard zero you want to theoretically be.
You should fine tune the scope and check at various yardages anyway. Gun Tech Steve Ostrem shows us how to measure your existing rifle sight height for replacementContour Barrel Mounted Front Sights 579-103-132Learn more here. For example the same rifle and scope may need medium height scope mounts if the standard diameter barrel is fitted but if the heavy varmint barrel is fitted then the best scope mounts maybe the high model.
The make and model of riflescope also affects which height scope mounts rings you need to use when mounting your scope. This is because. The angle that is important regarding cant is the TOTAL angle or line of sight to the bore.
You do increase a little this angle with higher scope height but it is not significant compared to the 30 MOA you have to dial up at long ranges where normal canting errors become significant. This chart provides guidance on ring height based on the outside diameter of your scopes objective. The outside objective diameter is measured from the bell itself not the glass.
Ring height is from the top of the base to the bottom of the scope tube. Ring Height for 1 Inch Tubes. Ring Height for 30mm Tubes.
Scope Ring Height and Clearance Calculator. Use this simple calculator to figure out if the scope and ring combination youre using will clear the barrel of your rifle when fitted. This calculator takes into account usage of Butler Creek scope covers as well as the scope mount for traditional bolt rifles.
Set to 0 if using AR-style full rail i. How Rifle Scopes are Measured. Magnification and Objective Lens.
This is the most important numerology on a rifle scope. It describes the magnification and the size of the scopes objective lens. If you take a closer look at your scope you will notice some writing on the side of the scope for example 3-940.