Name: Arma Reforger
Website: https://store.steampowered.com/app/1874880/Arma_Reforger/
Status: Early Access
Release Date: unknown
Availability: Purchase on steam
Unless it is intentional, you should stick to one viewspeed method for both ADS and Scope. And you can do this conversion by just selecting "All" for the input game
https://www.mouse-sensitivity.com/?share=6150eaeb9f45b46bcb73decc7eb605cd
ADS used to be the same formula as look sensitivity with just the FOV as a modifier. At some point they changed the ADS formula slightly so it's about 1% different.
I'll see if I can add the config file, although it doesn't really add any more precision as the 6 decimals in-game should be enough.