New shooters,To mess with your friends. If you don't have a ladder site on your gun you can still shoot long distance. Take a shot at a target a long way away holding a flat bead to the top of the notch, over water is best. Where the bullit strikes the water has to be seen. Next shot set the target on the front site the same as the first shot, now drop the back site down to where the bullit splashed the water. This will put you close to your target. Practice with this methoud.
Next you calibrate your barrel. Set the target at maybe 350 yards. (Loose dirt helps here.) When you fire, with flat sites, the impact in the dust marks where to drop your back site to while still holding your front site the same on the target as the first shot. Where ever the back site is on the length of your barrel you mark with tape until you are on the target, You will be putting your back site at a specified point on the barrel for the distance shot rather than elevateing the ladder site. Look at it as raising the front site rather than raising the rear site. Small almost imperceptible marks can be made on the barrel to indicate different distances. A longer barrel works better for more working space, not much though. You can also scribe a line centered from the front site to the center of the notch in the rear site down the top of the barrel. This will aid with centering the shot. Be careful or your buddies will see your marks. A barrel with flats helps.
The same method will work on a pistol. Start with an accurate favorite load.