RCBS X Die Product - Manual (Page 6)

STEP 3: Tighten the large lock
nut. Insert one of your sized,
decapped, trimmed and lubed
cases into the shell holder and run
the case into the die as is done in
full length sizing.
See photo 3.
STEP 4: With the case fully
inserted into the die, screw the
mandrel into the die until hard
resistance is met. Approximately
four turns of threads will be left on
the mandrel above the lock nut.
See
photo 4. Tighten the lock nut on the
mandrel.
Note: Maintain this setup through-
out the entire life of the cases in
this trimmed lot.
STEP 5: Reinsert a case in the
die and check for any bulging on
the case by:
1) Comparing with photo #5.
2) Chamber the first few cases at
the beginning of the loading session. If
the cases don’t chamber (due to
bulging), the mandrel is too far
down in the die. (You will need to
repeat Step 4). Size cases as you
would with any full length sizer die.
Note: Adjusting the mandrel too far
down will cause the case to buckle.
If the mandrel is not adjusted far
enough, it will allow the cases to
continue growing. Die adjustment
explained in step 2 is very impor-
tant to achieve consistent results.
Cases sized in the X-Sizer die will
have growth of a few thousandths
of an inch during the first few siz-
ings until each case seats against
the mandrel stop.
Photo 4
P hoto 5. Observe the bulged
shoulder area in the case on
right.
Photo 3