Z Zero - The range at which the point
of aim and the point of impact are one
and the same.
Verb: To sight in a rifle/scope/load combination so that the bullet’s
point of impact coincides with the point of aim at a preselected distance.
Called this because at that distance, zero hold-over
is required when aiming. See Bullet
drop, Hold-over, Line
of sight, Trajectory.
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