The Vary-Zone multiples crossbow scope allows you to precisely compensate for the
trajectory of any crossbow shooting between 240 and 360 FPS for up to 50 yards each
in exactly 10 yard increments. Simply sight in for 20 yards om the crosshair, dial in your
crossbows velocity, and you're automatically sighted in for 30, 40, and, 50 yards.
1/2" adjustments at 20yds.
