Manual

How to Swage Bullets Using The
RBTL-5-M, -S, or -H Die Set
Type -H dies fit into the ram of the Corbin Mega-Mite press (CSP-2), Corbin
Hydro, Jr., (CSP-2H) press, and the Corbin Hydro-Press (CHP-1). The type -M
dies fit either the horizontal Silver Press (CSP-3) or the vertical Series II Press
(CSP-1). The type -S dies fit only the Series II Press (CSP-1). The last letter, -
M, -S, or -H, describes the outside diameter, threads, punch lengths, and which
presses the die set will fit. If a tool fits both the -S and the -M systems and
there would be no difference in it for either of them (such as punch holders or
draw dies), then the -M designation is used.
The 5-die set consists of a CORE SWAGE (CSW-1), a BOAT-TAIL PREFORM
(B-1), a REBATED BOATTAIL FINISHER (B-2), a POINT FORM (PF-1) die,
and a LEAD TIP DIE (LT-1) each with one internal and one external punch,
except the two rebated boattail dies share the same external core seating
punch.
An EXTERNAL PUNCH is held in the FLOATING PUNCH HOLDER (FPH-1-
M or FPH-1-H), which comes with the press and screws down into the top
plate of the press. For the -M and -S external punches under 3/8-inch caliber,
a threaded bushing and steel ring are removed from the bottom of the punch
holder, placed over the external punch, and then screwed back into the bot-
tom of the punch holder to secure the punch. The punch holder screws into
the press head, so the punch faces the ram. For -M and -S punches from 3/8-
inch up, the bushing and ring are part of the punch assembly. For -H external
punches, only a threaded bushing is used, without the steel ring. The external
punch is the TOP punch in these systems.
The die screws into the press ram, with its INTERNAL PUNCH inside the
ram. Some -H internal punches require the use of spring powered retraction:
for the PF-1-H die, the internal punch is called an EJECTION PIN punch, and
it will have a quarter inch diameter hole through the head portion, through
which a 1/4-inch diameter retraction pin fits. The pin goes below the large
spring around the press ram, and pushes down on the pin, which then pushes
the punch down when the ram is raised, making it easier to insert material
into the die. For the PF-1-M and PF-1-S dies, a notch is machined into the
head of the internal punch, which matches a removable pin with knurled head
pushed into the front (CSP-1) or top (CSP-3) of the press. This is the STOP
PIN. It presses on the tail all punches except for the ejection pin punch, to
cause ejection on the down stroke. Because the PF-1 die would form the bul-
let around this pin if the pin were allowed to remain in the die cavity during
swaging, the stop pin must be put into the notch and used to keep the pin
retracted from the cavity during swaging, holding it firmly during the down
stroke to cause ejection of the bullet.
In the -H system, a knock-out or ejection bar goes through a slot in the press
ram, below the spring and also below the retraction pin (if one is required
not all punches have a hole through the head). The knock-out bar supports
the head of the internal punch while the component is being swaged, and
comes to rest on the press mounting plate on the downward stroke. This stops
the movement of the bar while the ram continues down, making the punch
stop moving while the die goes down with the ram.
The RBT deflects
muzzle gas so it
does not focus in
front of the bullet,
as with the
standard boattail.
Stop Pin
(CSP-1 or
CSP-3 press)
fits the slot in
the ejection
pin punch
head.
External
Punch
Internal
Punch
Internal
ejection
pin
punch,
PF
PF-1
Point
Form
Die
External
RBT PF
Punch, is
used ONLY
to push the
RBT bullet
into the PF
die. Any
other use
may
destroy it.
External
Punches are
held in the
press HEAD
using the
Floating Punch
Holder.
CSW-1 B-1 B-2 PF-1 LT-1
(additional flat base punches also shown,
not included with 5-die set)
New style punches do not require
the spacer ring. Their head is twice
as long as the previous design.
Diameters larger than about .375
will use a captive hex-bushing and
semi-removable head (factory
assembled, no need to ever take it
apart once it has been tested).