ZEROING THE SERVICE RIFLE

ELEMENTS OF ZEROING NOTE: The bullet will rise approximately 7 1/2 inches above the line of sight between 0 and 300 yards / meters. AIMING POINT TRAJECTORY LINE OF SIGHT RANGE 100 200 300

TYPES OF ZEROS ZERO TRUE ZERO BATTLE SIGHT ZERO (BZO)

RCO WINDAGE AND ELEVATION ADJUSTERS RIFLE SIGHTING SYSTEM – • •

NUMBER OF CLICKS TO MOVE STRIKE OF BULLET ONE (1) INCH: RCO WINDAGE AND ELEVATION RULES NUMBER OF CLICKS TO MOVE STRIKE OF BULLET ONE (1) INCH: RANGE 36 YARDS 9 CLICKS 100 YARDS/METERS 3 CLICKS 1 CLICK 300 YARDS/METERS

ELEVATION ADJUSTMENTS DIRECTION STRIKE OF ROUND IS MOVED WINDAGE AND ELEVATION ADJUSTMENTS ADJUSTMENT ADJUSTER DIRECTION DIRECTION STRIKE OF ROUND IS MOVED WINDAGE CLOCKWISE RIGHT COUNTER-CLOCKWISE LEFT ELEVATION UP DOWN

TARGET DIMENSIONS FOR KNOWN DISTANCE COURSE 4’ - 0” 6’ - 0” 6’ - 0” 60” 8” 6’ - 0” 4” 40” 19” 12” 26” 20” 14” 24” 40” 36” 6” 34” “A” TARGET “D” TARGET “B” MODIFIED TARGET

WEAPON’S ZERO TO CHANGE FACTORS THAT CAUSE A WEAPON’S ZERO TO CHANGE Maintenance Temperature Climate Ground Elevation Uniform CMC – 22R Chart 10

SUMMARY ELEMENTS OF ZEROING TYPES OF ZEROS RCO SIGHTING SYSTEM WINDAGE AND ELEVATION RULES TARGET DIMENSIONS FACTORS AFFECTING ZERO CMC.23 CHART # 5