Corbin Lead Semi-Wadcutter 1 Instructions Manual

							(Type -S
shown)
Makes lead bullets with a shoulder
between nose and shank in the
wadcutter or semi-wadcutter style.
For paper patched, gas-check, Base
Guard, or dip-lubed bullets made in
one or two strokes of the press. Die
screws into the ram; external punch
fits Corbin FPH-1 floating punch
holder in press head. The internal
punch head length (-H) or tail section
on internal punch (-M, -S) controls the
max/min weight range for a given
die. Bleed holes must not be
covered by either punch.
Lead Semi-Wadcutter 1-Die Set
Diameter: ________
Type: -M  -S  -H
Nose (external) punch:
Keith (TC)3/4-E (handgun RN)
1-E (rifle RN)AL (Auto-Loader)
TWC (target wadcutter)
BWC (button-nose wadcutter)
Other: _______________________
Base (internal) punch:
FB (Flat Base)HB (Hollow Base)
CB (Cup Base)DB (Dish Base)
BG (Base GuardTM)
Other: _______________________
Calibers over .375 in -M and -S sets have captive hex
nut and bushing on external punch. Others use the hex
nut/bushing that comes
with the punch holder.
The LSWC-1 die is used to make all-lead, gas-checked, or Base-
Guardtm bullets which have a semi-wadcutter shoulder between the
ogive and the shank. The nose is formed in a cavity, machined in the external
punch (although the base and nose can be formed in the alternate punches if requested) with the base being
formed against the face of the internal punch.
To use the die, first make sure the internal (longest) punch is inserted in the threaded end of the die.
The “die” is the cylinder. The “internal punch” is the longer of the two punches, which stays inside the ram. The
“external punch” is the one that is held by the floating punch holder, in the press head (top punch). If you are
using a Corbin hand press, make sure it is in the “short stroke” or swaging position (the ram to toggle link pin
is in the set of holes closest to the toggle bar, so that the ram travel is half the length used for reloading). On the
CSP-1 press, make sure the stop pin is inserted into the front of the press. Then screw the die into the top of
the press ram.
Screw the external (top) punch into the “Floating Punch Holder”, in the top of the press. Cut or cast a
lead slug that easily fits into the die by hand, and will fit completely inside it (no lead projecting). Apply a thin film
of Corbin Swage Lube to the slug and put it into the die, raising the ram to allow the internal punch to drop down
and make room. Adjust the Floating Punch Holder so that the ram can be raised all the way to the top without
encountering any resistance, then lower the top punch (by turning the Floating Punch Holder) until it cannot be
turned any further by hand. Lower the ram slightly, and lower the top punch slightly, then raise to swage. At the
point where you start to get some extrusion of lead from the bleed holes, you have adjust the Floating Punch
Holder correctly.
Lower the ram to eject the bullet. If the bullet nose is not completely filled, it means the lead slug has an
angle that is trapping lube or air in the nose punch. To solve it, turn the bullet over and reverse swage it, putting
the nose on the base, and vice versa. Or, use a flat punch to pre-form the nose before using the nose punch.