Square Deal "B" Conversion
calibers on your SDB is a simple procedure.
First, you must decide whether you need to change the priming system that is now
up on your machine. Small calibers use small pistol primers and large calibers use
large pistol primers. Skip step one if there are no changes needed.
Step 1: Changing The Priming System
Primer Early Warning System. Remove three screws (#13989 - refer to schematic) to remove
the primer system from the front of the machine. Remove the primer slide return spring
from pin (#13790) and remove the primer slide assembly from the magazine system. Replace
the correct size primer slide in the same manner.
IMPORTANT Make sure the magazine is empty of all primers by inverting the
Remove cap (#13957) and pull out the internal magazine tube (#13673). Take the
correct size magazine tube and drop a primer, anvil side up, into the top of the tube to
make sure the primer drops freely through the tube and orifice. Insert the magazine tube
(#13673) into the magazine shield with the keyed side of the orifice pushed all the way
down into the notch or key way in the housing (#20900). Replace the cap (#13957). Do not
|| Now, insert a few primers, anvil side up, into the magazine. Pull the
handle, a full stroke, raise the handle and a primer should appear at Station 2. If a
primer fails to appear adjust set screw (#13961), located at the lower tip of the flat
spring (#13979) on the front of the housing (#20900) a s follows:
If changing from a large primer to a small primer turn (#13961) 1/8 turn increments
clockwise. If changing from small to large turn 1/8 turn increments counterclockwise.
Give the handle another full stroke and a primer should appear. If the primer cup
is not centered under the shellplate or snaps into place when the handle is raised it may
be necessary to adjust the primer slide travel by turning set screw (#13961) 1/8 turn
increments. It is located between the primer slide and the coiled spring (#13798) on the
front on the housing. (See the Square Deal B Schematic
and Automatic Primer System Schematic).
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Step 2: Changing Shellplates
out the ejector wire (#13433) and remove the shellplate bolt (#13328). Carefully remove
the shellplate and be aware of a very small index ball (#14019) that sits on a spring.
Install the correct shellplate.
short end of the ejector wire fits behind the shellplate bolt (#13328). Note: The correct
positioning of the ejector wire is important or serious damage to the sizing die could
result. See Figure 14.
Step 3: Changing and Adjusting
of Dillon's Bench Wrench is suggested when changing or adjusting dies.
Remove screw (#13895) and remove the powder measure. Remove screws (#13815) and
(#14037) and remove the toolhead assembly. Lift out the three die inserts (#12864, #11628,
#11734) from the frame. Note: The toolhead you just removed is adjusted for those dies.
Store these parts for when you set up this caliber again.
Now, take the dies of the caliber that you are converting to and insert them into
the frame, corresponding to the position reference number on each die. 1, 3 & 4. If
you choose to use the toolhead you removed, be certain that you back out the adjustment
bolt (#13908) at Station 4 and remove the seating stem at Station 3.
Reinstall the toolhead with screws (#13815).
Drop the correct powder funnel expander in the die body (#13865) and mount the powder
measure just as you removed it. Loosen the clamp screw (#13895).
To achieve proper adjustment of the die it is important to understand that the
adjustable powder bar should reach the end of its travel at the same time that the handle
reaches the bottom of its stroke against the frame stops.
To achieve this adjustment, the die body (#13865) must be screwed up or down. A
sized empty shell case must be placed in the shellplate at Station 2 in order to check
this adjustment. No powder should be in the measure during these
Beware! If you pull the handle and the powder bar reaches the end of its travel
before the handle reaches the bottom of its stroke, STOP! Raise the die (#13865) several
turns and try again. Once the adjustment is correct but you want the case mouth flared a
little more, just screw die (#13865) down 1/4 turn or less.
The base of the bullet needs only to set within a slightly flared case mouth.
Tighten screws (#14037) and (#13895).
Now, you can adjust the powder measure for the charge your loading data tells you
to use. Remember that the powder charge adjustment screw (#13943) turns counterclockwise
to decrease the volume of charge and clockwise to increase the charge.
Your conversion kit comes with the seating stems to fit the most popular bullet
styles; wadcutters, semi-wadcutters and round nose. Choose one and insert it in Station 3.
Simply seat the bullet to a desired depth. Consult your loading data!
Now, index your seated cartridge to Station 4. Lower the handle all the way against
the frame stops. Turn the die adjustment bolt (#13908) down until you feel a slight
opposition. Raise the handle and turn the adjustment bolt clockwise 1/4 to 1/2 a turn.
Insert this cartridge back into the shellplate at Station 4 and give the handle a full
stroke. The crimping die is now adjusted and you're ready to start loading.
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Caliber Conversion Chart
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