Dillon Precision Products RL550C, Assembly And User Instructions Manual

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Improper Headspace—Case head is
below the low step (A)--adjust size
die up CCW--run another case
through the Size Die Station
•
Raise the Handle and insert a lubricated case into Station 1.
•
Cycle the Handle all the way down.
•
Raise the Handle and remove the case. The case is now initially sized. Verify the case is correctly sized and
the headspace (
Refer to Section 15.3 on headspace definition) is correct using a Dillon Head Space Gauge.
(Using a Headspace Gauge for bottleneck cartridges is an absolute must.) Insert the sized case into the Gauge.
The top of the Gauge verifies that the headspace is correct and the bottom of the Gauge verifies the case length
is correct--see below. If the headspace is above the maximum, screw the Die down 1/8 of a turn (about .009”)
and resize the case again. Repeat until the case head is below the upper step. (See below) If the case head is
below the lower step, back the Die up and check another case. Use a 7/8" wrench to hold the Die body and
tighten the Die lock ring with a 1" Dillon Bench Wrench with the sized case in place.
•
Note--Some Dies may require “full contact/slight cam-over” with the Shellplate.
•
Note: Die Locking Procedure--Always “final tighten” any Die-Body i.e. Size, Seat and Crimp Die Body Lock Rings with the
appropriately processed case fully inside the Die with Handle down. This always promotes a better alignment of the Die
and Shellplate.
Top of the gauge
C
hecks the headspace-High
step B is the maximum and
the low step A is the
minimum
Bottom of the gauge
Checks the overall case
length C (Low step) is the
minimum length and D (High
step) is the maximum length
Proper Headspace—Case head is
at or just below the high step (B)
and above the low step (A)
Improper Headspace—Case head
is above the top step (B)--adjust
size die down CW--Cycle this case
through the Size Die Station again
Low step A High step B
Thread Sizing Die
Assembly down to touch
the Shellplate and back
it up 2 turns and tighten
the Lock Ring finger tight