Here's what I did with my stock 10/22 2-3 yrs. ago.
First 10 shots, with the williams setup, at 25 yds. First 3 shots low and left. Adjusted the sight, the next 7 shots, spot on. The squirrel above, was the first shot at with the setup. A red head, DRT!
Not bad for an ole geezer wearing bi focals. Do suggest that after it's sighted in, loc tite it in place.
maddog