Quick Answer
Calibrating a rangefinder for bow hunting involves adjusting the device to compensate for the bow's arrow trajectory and ensuring accurate distance readings.
Setting Up Your Rangefinder
To calibrate your rangefinder, start by setting it to the bow mode, which is usually designated by a label or icon on the device. This mode takes into account the effects of gravity on the arrow’s flight path. Next, enter the arrow’s ballistic coefficient, which is typically a value between 0.000 and 0.100. A common value for a typical hunting arrow is around 0.070.
Choosing the Right Settings
When calibrating your rangefinder, consider the type of terrain and the distance you’ll be shooting from. For example, if you’re hunting in a dense forest, you may want to use a more conservative setting to avoid overcompensating for the arrow’s trajectory. On the other hand, if you’re shooting from a flat, open area, you can use a more aggressive setting. A good starting point is to set the device to a medium setting, such as 0.080, and adjust from there based on your experience and the terrain.
Calibrating in the Field
To verify the accuracy of your rangefinder, take it to the shooting range and set it up to the same settings as your bow. Shoot at a target at a known distance, such as 20 or 30 yards, and use the rangefinder to measure the distance. Compare the rangefinder’s reading to the actual distance to ensure accuracy. If necessary, adjust the settings on the rangefinder to achieve a more accurate reading.
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