Dillon Precision Case Preparation Tools - Manual (Page 10)

Dillon Case Gages, cont…
NOTE: Before
inserting any case into
a case gage, make sure
it is wiped clean of any
lubricant. Otherwise,
the lubricant will accu-
mulate inside the case
gage and cause it to
become coated with
grit and dust. This will
cause the case gage to
give inaccurate read-
ings. Always refer to a
reliable loading manual
for case dimensions.
RIFLE case gages have “steps” on the top and base. If a case is properly
trimmed and the shoulder setting is correct, the case should fall between the
high and low steps. These two settings are accomplished at different stages of
reloading.
Shoulder setting is done at station one of your loading machine. When a
case has a proper shoulder setting it will fall between the high and low steps
at the BASE of the case gage. If it falls below the low step, you need to raise
your sizing die up in 1/8 turn increments until the proper setting is achieved.
If the case is above the high step, you need to lower the sizing die.
Overall length, or OAL, is done while trimming fired rifle cases back down
to size. Insert a CLEAN case into the gage and set it on a clean, flat surface. If
the case is trimmed properly, the mouth of the case will be between the high
and low steps at the TOP of the gage. If the mouth of the case is above the
high step, you need to turn your trim motor down in small increments until
the proper OAL is reached. If the rim is below the low step, you need to raise
the trim motor. Refer to trimmer instructions.
PISTOL case gages do not have the steps
mentioned in the rifle gage section. The pistol
gage is used to determine overall length and
case diameter. Designed to maximum SAAMI
cartridge length and minimum chamber diame-
ter. OAL is achieved by seating the bullet to the
proper depth at station three of your loading
machine.
Insert a completed round into the gage and set
it on a clean, flat surface. If the bullet extends
from the top of the gage, the round is too long. To
seat the bullet deeper into the case, adjust your
seating die down in 1/8 turn increments until the
proper OAL is achieved.
.380 ACP #15160
9 mm #15161
.38 Super #15158
.38 Special #15159
.357 Mag. #15163
.40 S&W #15164
10 mm #15162
.44 Mag. #15165
.45 ACP #15166
.45 Colt #15167
.223 #13254
.308 #12867
.30-06 #12679
8 For expert assistance or to place an order, call (800) 223-4570
Accessory Manual, May 2007 5/22/07 8:27 AM Page 11