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- Mar 23, 2019
The real question then becomes if the VAR correction is taken into account in the ballistic computations of the Kestrel. It might not make a difference most of the time (maybe a lot in ELR) but for peace of mind it would be great to know that it has been taken into account in the displayed results of the device.Whether using True North with a declination or Magnetic North, the relationship between the DOF and WD will be the same as it is relative. Really the only issue you would have with using Magnetic is with Coriolis effects being slightly off. For example at 1000 yards, if you think you are pointing 0 degrees but are off by 21 degrees, you would incur around 0.03 mil difference in Vertical Coriolis. At 2000 yards this is around 0.07 mils. IMO unless shooting at really extended ranges, it is much easier to use Magnetic North and not worry about declination.