RCBS Rock Chucker Supreme Press - Manual (Page 4)

WARNING
TO AVOID INJURY, READ AND FOLLOW THESE SAFE PRIMING PRACTICES.
DO NOT ATTEMPT TO PRIME MILITARY CARTRIDGE CASES WITH CRIMPED PRIMER
POCKETS UNTIL THE CRIMP HAS BEEN REMOVED WITH A COUNTER SINK, A
SPECIAL REAMER OR BY SWAGING. PRIMERS SEATED INTO CRIMPED POCKETS
ARE SUBJECT TO DEFORMATION WHICH CAN CAUSE MISFIRES AND EVEN
DETONATION DURING SEATING WHICH CAN CAUSE SERIOUS PERSONAL INJURY.
DO NOT ATTEMPT TO SEAT PRIMERS AGAINST EXCESSIVE RESISTANCE WHICH
MIGHT CAUSE DETONATION AND POSSIBLE SERIOUS PERSONAL INJURY. CHECK
TO BE CERTAIN THAT THE CASE WAS NOT PREVIOUSLY PRIMED, THAT THE FIRED
PRIMER WAS REMOVED, THAT A PORTION OF THE PRIMER CUP WALL MIGHT STILL
BE IN THE PRIMER POCKET AND THAT YOU ARE USING THE CORRECT SIZE PRIMER.
DO NOT MODIFY THE PRIMING SYSTEM IN ANY MANNER OR ATTEMPT TO USE
SIMILAR PARTS OR PRIMING SYSTEMS FROM OTHER MANUFACTURER’S. TO DO SO
COULD RESULT IN PRIMER DETONATIONS RESULTING IN SERIOUS PERSONAL
INJURY.
NEVER SEAT A PRIMER INTO A POWDER CHARGED CASE.
DECAPPING LIVE PRIMERS IS EXTREMELY DANGEROUS AND IS NOT
RECOMMENDED.
INSTALLATION
Mount the Rock Chucker Supreme Press to a sturdy workbench or table with two 3/8” bolts of
sufficient length to penetrate the press base and bench.
Attach the handle nut to handle. Install the threaded portion of the handle to either the right or
left side of the toggle block and lock down with the handle nut. See photo #1. The handle nut must
remain tight at all times to avoid damage to the handle and toggle.
Install the Primer Arm as show in photo #2.
Slip the primer catcher between the ram and rear portion of the frame. Snap the feet of the
primer catcher into slots on the side of the press frame. See photo #3.
The Rock Chucker Supreme press ram accepts removable type shell holders. To install, insert
the shell holder into the ram and twist slightly to the left. To remove, twist slightly to the right. See
photo #4.
PRIMING
To use the primer arm, first make sure the correct size primer plug and sleeve are in position.
To install the primer plug and sleeve, drop the primer plug through the sleeve. Place the spring on
the primer arm body. Thread the plug and sleeve into the primer arm body and tighten the
assembly with a small nail or paper clip through the cross hole in the primer plug. Do not over
tighten. Check from time to time to be sure the primer plug remains tight.
Insert lubed case into shell holder, lower the press handle to size the case and remove the
spent primer. To prime, simply place the correct size primer, anvil side up, into the primer sleeve.
See photo #5. Then, gently and slowly raise the press handle. As the case is drawn out of the die,
the primer arm will guide into the slot in the ram, the case will be lowered onto the live primer,
seating it to the bottom of the primer pocket. See photo #6.
After the primer is seated, lower the press handle enough to allow removal of the case from the
shell holder. Be sure not to lower the handle too far or the decapping pin in the die will push the
live primer back out. Always inspect the primed case to make certain the primer is properly seated.
The Rock Chucker Supreme does not accept the Auto Primer Feed accessory (9550, 9580).
MAINTENANCE
This press was lubricated at the factory. However, it is necessary to lubricate all moving parts
from time to time with gun oil. If rust spots appear, swab lightly with gun oil and wipe dry. Care
should be taken not to apply oil where it could come in contact with primer pockets or primers. Oil
will deactivate primers. It is a good practice to clean the press prior to lubrication to remove grit
and other residue. You will note ease at which the epoxy enamel paint wipes clean. This finish is
impervious to oil and is extremely chip and fade resistant.