Range 300—Or Increase By 300

by opening and closing the fist, expose thumb and fingers to a number equal to the hundreds of yards;

Add 50 Yards
(Top View)

to add yards describe a short horizontal line with forefinger.

Decrease By 300

To change elevation, indicate the amount of increase or decrease by fingers as above; point upward to indicate increase and downward to indicate decrease.

What Range Are You Using?