If I remember correctly, long range shooters have to figure in the rotation of the Earth in order to be able to hit a target at very long ranges.
Wonder what “computer” Billy Dixon used for his long shot at Adobe Wells.
That ain’t nothing. I saw a chinese movie where a guy with a 6 shooter dropped a guy at 2 miles away off a moving horse with the shooter on a moving train. Course it was his 17th shot out of the six shooter.
True, at least in high angle artillery fire. You also have to correct for wind direction, wind speed and air density in the various layers of atmosphere the round passes through on its way up and down. There are many other factors taken into account as well. It can get complicated at long ranges.