Your link didn't work. Even tried typing in the first part. Would love to read those questions.
The answer they offered for larger magnums said 10 feet then later said 12 to 15 feet. Funny how they can't give a definitive answer.
I will need to bring a ladder and my binos to read the unit at that distance.
Here is a PDF file that Steinertsensing put on line:
This is copied from it :
From 25cm (10’’) from the muzzle to any downrange distance for supersonic speed"
I am through messing around with this unit. It just isn't made for bench shooting especially at a range with other shooters. Can't get up every few shots to manipulate the unit which is downrange. Can't read it from bench and velocities are not consistent. It is going back.