Overwatch Zoom in Aim Hero?

[VanitaS]

Hello everyone!
Sorry in advance for my english but i'm from Italy , i'll try my best 
So , yesterday i tried Kovaak's Aim Trainer and honestly i didn't really like it , too buggy and it feels different. I prefer Aim Hero for its simplicity but there's a problem. I don't know how to put the correct Overwatch zoom sens in Aim hero. I've read that normal FoV in overwatch (without zoom) is 70.53 in Aim Hero and 30.04 with the zoom , if i remember correctly. So...even tho i know such things , how do i put the correct zoom sensitivity? I've heard that is quiet enough to use 30.04 Fov and then multiply my Overwatch sens for my zoom sens and then divide it for 100.
So it would be 4*40/100 = 1.6 in the Aim hero zoom sens , if i'm using 30.04 FoV. But i don't know , it still feels different.

I use 800 DPI , 4 IG , 40 Zoom and 103 FoV in Overwatch.
Thanks a lot for your help!