Quick Answer
To choose the right mounting height for your scope, determine your dominant eye's position, then set the scope's mounting height to place the optic's center 1.5 to 2 inches below the rifle's bore axis. This position allows for easy sighting and minimizes parallax error. Adjust as needed for comfort and accuracy.
Determining Mounting Height
To start, locate the bore axis of your rifle, which is the center of the barrel. For most rifles, the bore axis is at the midpoint of the stock, about 1/3 of the way down from the action. Next, measure the distance from the bore axis to your dominant eye. This will give you a baseline for setting the scope’s mounting height.
Setting the Mounting Height
A good rule of thumb is to set the scope’s center 1.5 to 2 inches below the bore axis. This position allows for easy sighting and minimizes parallax error, which can affect accuracy at longer ranges. To set the scope correctly, place a level on the rifle’s barrel and adjust the scope’s mounting height accordingly.
Fine-Tuning the Mounting Height
Once you’ve set the scope’s mounting height, fine-tune it for comfort and accuracy. Hold the rifle at your shoulder with the scope aligned with the bore axis, then look through the scope and adjust the mounting height as needed. You should be able to see the reticle clearly and easily, without any parallax error. Adjust the scope’s mounting height in small increments until you find a comfortable and accurate position.
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