If you line up the tops of the rear sight with the top of the front sight
horizontally, where is the bullet hole at 25 feet? Mine hits the spot where I am aiming with the exact top of the hole it makes. That is if I am doing my part right. Use something to sit the gun on a table to let your brain see where it hits a few times, then your mind will remember where to aim it. It may not be the fs.