I am shooting 140 gr Berger Hybrids which according to Applied Ballistics App that has a G7 BC of .32
My Labradar shows a muzzle velocity of 2857 ft/s and 100ft velocity of 2811 ft/s (Silly me had it set to feet instead of yards so I only have values from 0 to 100 ft so for applied ballistics app I used 33 yrds, which is close enough to 33.3333)
Applied Ballistics shows 33 yrd velocity of 2810, right on the money.
So what does JBM say?
Near Velocity: 2857 ft/s
Far Velocity: 2811 ft/s
Chrono Separation: 100 ft
Drag Function: G7
Temperature: 85 F
Pressure (Non Corrected): 30.1
Humidity: 63%
This results in .330
Using the rest of the Labradar values:
Set Far Velocity to 2823 and that separation to 75 ft. We get .336
Set Far Velocity to 2835 and that separation to 50 ft. We get .346
Set Far Velocity to 2844 and that separation to 30 ft. We get .352
Set Far Velocity to 2851 and that separation to 15 ft. We get .382
Now if we set Far Velocity to 2715 and separation to 100 yrds (This is what applied ballistics has for G7 BC of .32) we get .319
So it looks like JBM has a trend of starting out with a high G7 BC when using close values from Labradar and gets very close to what Applied Ballistics has at 100 yrds (Theoretically, as I don't have Labradar values for 100 yrds).
So I would say you are safe to use the JBM G7 BC when using a Labradar value of 100 yards. This weekend I will be redoing some load development so I can update you with what the Labradar shows at 100 yards. You could also do the same as me and see what JBM says for all the values shown by the Labradar, and see if it shows the same trend that I see which is the BC starts high and shrinks down the further you go out.