Thank you for the response. Your excellent article made me realize how little I know about this subject. I downloaded the trail version of Precision Shooters Workbench and am attempting to get my shooting data to coincide with the program.
I found this in the manual, I "think" this means default should be Station Pressure, correct?
From the Brunton Manual......
Setting Pressure relative to Sea Level
1) When the barometric pressure has been
calibrated, the current barometric pressure will
offset by the target offset value.
2) To be able to read the current barometric
pressure as a pressure referring to sea-level
although at an altitude, calibrate as follows:
Check the current altitude (for example 1000m).
Divide 1000/8 (since 1 hPa/mbar is 8m altitude).
Result 125 hPa/mbar. Set offset to +125hPa/mbar.
The reading will now refer to the pressure at sealevel.