Got to go to a 1,000 yard range last weekend. What was interesting was my sight setting for 1,000 yards is only 1.4" above my 200 yard zero. Shooting a 30" bbl. Shiloh with a 550 gr. boolit over 65 gr. of Swiss 1 1/2, I'd expected to use my 3" sight staff. It wasn't necessary.
Fortunately the winds were calm, it was 100 degrees.