How to aim an ordinary rifle? 3: 1 Do you have a ruler? Such as target 100m, 400m, etc.

It is a three-point line, that is, according to the door gap-line of sight-target, three points form a line, which is aimed at the target. Plus the shooter's eyes are four point one line.

When aiming, we must first estimate the approximate distance of the target and set the scale to the corresponding scale (that is, adjust the height of the camera door). This corrects the height of the line of sight, so that the bullet flies to this distance, and the trajectory coincides with the line of sight.