Lots of rangefinders have “Angle Compensation” built in, and if you’ve got a Vortex Rangefinder, regardless of the model, this is certainly the case. (We happen to call it “Horizontal Component Distance” or “HCD” mode) But why is angle compensation so important? When should you be concerned about the true horizontal distance between you and a target and when is it actually more beneficial to just get the straight-line distance between your rangefinder and the target you’re ranging? Believe it or not, which you decide to use can determine whether you hit or miss your target in certain situations!