mine came from factory set and we were hitting woodchucks at 100 yards (no joke at all) my brother and i were impressed. Sure do miss those open sights, but the cz has better sights tried nailing a woodchuck at 140 yards (according to my dad) but i had it set at 125 because thats what i thought it was till i found out later. missed.
From the store my 10/22 was shooting about 1.5 inches high and right at 25 yards with the iron sights. I've since zeroed out the windage and brought the elevation back to about 3/4 inch high. Should be pretty spot on at 100 yards (haven't been to a 100 yard range yet, going tomorrow)