Tried to Google it or ask for people to explain it but no luck.
In: Technology
A gunsight looks in a straight line, light just works that way. Bullets move in a shallow curve, gravity just works that way. So, the first step to alignment is to adjust the scope so matches exactly where the bullet goes at a fixed distance, like 100 yards. You do this on a calm day with a target at 100 yards. You aim at the center of the target and fire. The bullet hits the target someplace else, and you turn tiny screws to adjust it. When the bullet hits where you are aiming, it’s “zeroed”. When shooting at different distances, you can turn clickwheels on the scope to compensate for the distance being ≠ 100 yards. These adjustments are called elevation. There are also special reticles (lines that appear when you look through the scope) that can be used for this. You need to know the distance, thus they sell laser rangefinders. You can also adjust from side to side with a clickwheel, what’s called “windage” because you are adjusting for the wind.
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