I donīt have it in a Strat, but the bridge model in a Ibanez S, so maybe it helps a bit.
I got 3mm on the treble and about 3,7 on the bass.
But within one rotation of the screw I can in terms of bass response go from pop punk to heavy metal, at least in my feeling.
So go somewhere in that area and then be aware that a quarter of a turn can make quite the difference in searching for the sweet spot.
It really took me a long time to find the spot and I still am toying with it at times. I have that one benchmark for my setup in general, which test the PU Height and tubes for the Amp quite well for me, which is the riff from "When you were young" by the Killers. When that sounds good and definded I like the bass side. Treble test is the chorus (and intro) of "Glassgow Kiss" by John Petrucci (goes up to the high in in the 24th fret).
When those too are good, I like my setup^^