Calibrating FX Chronograph to match LMBR - is it possible?

[johnf]

hi all.

Wet bank holiday afternoon problem/ query, sitting in the garage.... and yes I know that not all chronos are created equally .

I would like to adjust the FX to read the same as the LMBR as it is the easier as their is a calibration option in the advanced settings. Any maths geniuses out there to work out what -% I need to adjust the FX ( maximum adjustment +/-2%). No point having this option if I'm, not going to use it. I have tried going up in .5 increments but that is just wasting pellets so going down the mathematical route.

LMBR reads 7.6ft/lbs, FX reads 7.8 ft/lbs.

shots fired through the LMBR which is directly over the FX

Its not a major issue as they are all within legal limits, just want to see if its possible.

[Shed tuner]

you need to comapre the measured velocities... not the power output, then just divide one by the other to get the %

however, as power is proportional to the square of velocity, the adjustment is the square root of 0.2/7.8 so about 1.6% probably