It's twice slower for the 15x (12x actually) for me, cause it went out of scale, but it never drops anyway (I have almost 900 hours and I got it once). All other scopes match ADS on 360 distance.
I use:
1.0101inch 360 distance for Hipfire
2.2957inch 360 distance for ADS, 2x, 3x ,4x ,6x, 8x
6.8871inch 360 distance for ADS, 2x, 3x ,4x ,6x, 8x with DPI shift
4.5914inch 360 distance for 15x
13.7742inch 360 distance for 15x with DPI shift (though I don't think ever actualy used it)
Mouse base DPI = 3600
Mouse DPI shift = 1200
Hipfire FOV = 103
MouseSensitiveList=
PS: I don't have BFV, I just now it can do it.