RCBS Pro 2000 Progressive Reloading Press - Manual (Page 8)

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POWDER MEASURE
A powder measure is basically a
device which measures powder by
volume, not weight. However, before
you start throwing a given charge with
a powder measure, the first charge
must always be weighed on a powder
scale to arrive at the desired charge.
Accurate powder measure charges
will also depend upon the size and
uniformity of the powder kernels used.
DANGER: DO NOT use the
Uniflow Powder Measure with
black powder!
Helpful Tip: The consistency of the
powder and static electricity are
causes of erratic powder charges.
Slowly roll the powder container
several times to homogenize it before
pouring it into the powder hopper.
Static electricity can be reduced by
wiping down the powder hopper with
a clothes dryer sheet.
CAUTION: All internal components
of the powder measure assembly
must be thoroughly cleaned of rust
preventatives applied at the factory.
Failure to do this will cause powder
charges to be inconsistent and
provide erratic performance of your
reloads. See Diagram F for the
following items that must be clean
and dry before use:
• Casting
• Cylinder
• Metering Screw
• Powder Die
• Powder Bushings
• Spacer Bushings
• Powder Drop Tube
POWDER MEASURE ASSEMBLY
COMPONENTS-
A dependable powder scale should be
used to set the first charges in the
powder measure. It is not necessary
to empty the powder hopper each
time you change charges unless a
different powder is required.
POWDER MEASURE ASSEMBLY
Choose the correct cylinder.
•
The large cylinder throws charges
of ~5-99 grains.
•
The small cylinder throws charges
of ~2 to 50 grains.
To install the cylinder, make sure the
screw holes are oriented facing
toward the Linkage Assembly before
you slide it into the Main Casting. See
Photo A.
Photo A
CAUTION: DO NOT leave
powder in the measure, as it will
deteriorate and may clog and jam the
measuring cylinder and etch the
powder hopper.
Included with the Pro 2000 is a small
and large Micrometer Adjustment
Screw for the Uniflow Powder
Measure. To allow alignment of the
linear scale index, in any position the
operator chooses, three thin washers
are included. The only way to
determine the number of washers
needed is by trial and error. Each
washer provides a 90 degree,
counter-clockwise, rotation of the
body. To set the index lines in the
position you wish, first thread the
Micrometer body into the cylinder
until snug. Note the position of the
index lines. If the alignment is not
satisfactory, remove the body and
add a washer to the body over the
threads.
Thread the body into the cylinder
again, and note the change in the
location of the index.
By adding or deleting washers, you
will be able to set the index
according to your preference. See
photo B.
Photo B
INSTALLING SMALL METERING
SCREW
Having determined how many
washers are required to properly
locate the index scale, remove the
Micrometer body from the small
powder measure cylinder. Thread the
small metering screw into the
Micrometer body ten turns. Next,
insert body and metering screw
through the front of the powder
measure casting and into the
cylinder. Screw the body into the
powder cylinder (with correct number
of washers). Make sure the washers
align in the counter bore of the
cylinder. Use the wrench flats on the
end of the body to tighten the body
securely.