When shooting hunting rifles with post or beads and open or peep sights, all of my rifles are sighted thit dead centre on the top of the post, or dead centre middle of the bead. There is no 6 o'clock on an amimal. I want to know exactly where my bullet or ball is landing, not some 3, 6 or 10" above the post or bead dependent on the diameter of the bull I sighted in with as the illustrations would have happen. These would be launching my bullet upwards at horrid elevation to cause misses at intermediate ranges.

If I sighted 6 o'clock on an 8" bull at 75yards with my post, thus placing the bullet 4" (plus a bit to see light under the bull to know I had a 6 o'clock hold, WHERE will that bullet hit in relation to the bead or post at 200yards) 1 foot, 1 1/2 feet or maybe 3 feet high - dead on -depending on what calibre?

Thus, I disagree with the open sight illustration. Sighting in so the bullet hits middle of the top surface of the post or centre of the bead - always have an definite impact "in relation to your aim", not hitting at some unknown location above the sight.