RCBS AmmoMaster Chronograph - Manual (Page 4)

Figure 10 - Initialization Screen
4. Once the Display shows a shot number and an indicator next to
“Ready”, the AmmoMaster ® unit is ready to record velocities (See
Figure 11).
Figure 11 - “Ready” on Shot #1
5. Measure the distance between the bore of the weapon system and
the sighting system. Typically this distance is 1.5" on a rifle with an
optical scope. Remember that your line of sight will be higher than
the path of the projectile. The ideal projectile path is centered over the
chronograph at a height of 4.0 inches above the top of the Skyscreen
(See Figure 9). The projectile/ bullet height should be kept within ±
1.5 inches of this location for accurate velocity measurements.
WARNING! BE CAREFUL NOT TO AIM ANY LOWER THAN
THIS, AS IT MAY CAUSE SERIOUS DAMAGE TO THE
SKYSCREEN AND POTENTIALLY CAUSE SERIOUS INJURY TO
THE SHOOTER.
a. We recommend using a bench, sand bags, bi-pods, or other
means to stabilize your weapon.
b. if you are concerned about hitting your chronograph, start by
removing your diffusers and Side Supports. place a paper target
immediately behind your chronograph and aim several inches
above the top surface of the Skyscreens. Work your shots lower
in small increments until your shot placement is in the correct
location. Make note of that aiming spot. if desired, place a piece of
tape on the Side Support as a visual reference for your aim point
of that particular firearm. Repeat this procedure for each weapon
used in conjunction with your chronograph.
6. Shoot a round at the correct aiming point as mentioned above, to
start recording your velocity measurements.
ALWAYS WEAR EYE AND HEARING PROTECTION.
7. Please refer to the detailed instructions listed on pages 5-8
to become more familiar with the full functionality of the
AmmoMaster ® Chronograph.
8. ENJOY.
STORAGE
Follow steps 1 – 7 of the “Assembly” section in reverse sequence. Your
Chronograph should be stored in a dry, cool place away from direct
sunlight if possible. Although the plastic components of your unit are
manufactured with a uV inhibitor additive, limiting unnecessary uV
exposure of any plastic device is recommended. Do not leave your unit
outside for long periods of time.
KEYPAD LAYOUT
BUTTON FUNCTION DESCRIPTION
power Button Turn unit On. Turn unit Off, depress button and hold for 3-5 sec.
Change units Depress to switch from f/s to m/s.
Scroll left
Scroll to the left (decreasing shot #) while in Stats Mode and
edit String Mode
Scroll Right
Scroll to the right (increasing shot #) while in Stats Mode and
edit String Mode
Adds data
to string
Add data to an existing shot string while in Edit String Mode
no command depress no if choose not to delete velocity or string or clear all.
enter edit
String Mode
edit String Mode allows editing of recorded velocities in
selected shot strings.
delete data
in string
delete current velocity recorded; delete any recorded velocity
in any shot string.
yes command depress yes if choose to delete velocity or string or clear all.
enter Stats
Mode
displays statistical data for a selected shot string.
Clear a
selected string Clear function will clear all data within a selected shot string.
delete all
recorded data
Reset will clear all recorded data in all shot strings.
Accept results
depress enter to select desired shot string, accepts the results
in the stats mode.
Starts new
shot string
Starts new shot string
FUNCTIONS
On/Off
To turn unit on - depress “On/Off” button and the Chronograph is
ready to record data.
To turn unit off - depress “On/Off” button and hold for approximately
3-5 seconds.
4 RCBS AmmoMaster ® Chronograph Instructions