You must also divide by the FOV difference: http://www.wolframalpha.com/input/?i=(tan(40degrees%2F2))%2F(tan(90degrees%2F2))%2F(40%2F90)
This is the same as Monitor Distance 0% btw:
There's no separate setting for them, they all use the same sensitivity as hipfire. Use these calculations if ADS or ACOG is more important than hipfire to you.
Games added
Aiming.Pro
Dead by Daylight
Warhammer 40,000: Eternal Crusade
Games updated
H1Z1 - Updated ADS sensitivity
Islands of Nyne: Battle Royale - Added full support for ADS and scope sensitivity
Call of Duty: Black Ops III - Added Thermal Scope sensitivity
Planetside 2 - Added vehicle gunner sensitivity
Aim Lab - Added ADS sensitivity
Squad - Added ADS and ACOG sensitivity