Rifle Scopes : parralax on 1-4x scopes

I can see, and appreciate, the point being made about the details of the post, what is currently available, etc.  That said, I did not see it as unreasonable to address the maximum magnification and the 100 yard parallax correction distance as a simple exercise. 

Using your example 4x and a 32 mm objective and of putting the outer edge of a 2 mm pupil against the outer edge of the scope's exit pupil, with a 100 yard parallax correction, would yield an offset of 3 mm for the scope's 8 mm exit pupil and a parallax error of 60 mm, or 2.36 in, at 600 yards.