I've got such a scope but I don't know who did the work. Looks as good as a factory job though.
My guess is they used the ret from the 6-24x40.
I haven't measured them but the dot spacings are on the large side at HFT mags, but useful for windage/trajectory dots at 32x. The 6-24x40 is true mildot at 12x i.e. half the maximum mag. Someone suggested that therefore in the 8-32 it might be true at 16x, which is logical.