I would agree. As long as you're on the paper, I wouldn't bother changing the scope at all (unless it's really close to the edge).
And I would add to start at 25-30 yards. Don't try to start at 100 yds or you may find that you're not hitting the paper at all, and it can be difficult figuring out which way you're missing. Get it on the paper at 25, get your good group, then adjust your scope so you're maybe an inch high at 25, THEN move out to a longer distance.