Rifle Toolhead Set Up (Page
2)
Station 1 - How to use the Case Gage
Once you've made a
preliminary adjustment to your seating die drop the sized case all the way into the case
gage Figure 72. Look at the base of the case.
If the base of the case is below the high step (see "B" Figure
73) and above the low step (see "A" Figure 73) then the
sizing die is properly adjusted. If the base of the case is above the high step Figure 74 then you will need to adjust the sizing die down by turning it
clockwise.
If the base at the case is below low step Figure 75 then the
sizing die is adjusted down too far and needs to be backed out by turning it
counter-clockwise (Note: this case should be thrown away). Once the sizing die is properly
adjusted, drop the properly sized case back into the case gage and look at the mouth of
the case Figure 76. If the case mouth is below the high step (see "C" Figure76) and above the low step (see "D" Figure 76)
then the case is the proper length and will not need to be trimmed. If the case mouth is
above the high step Figure 77 then the case mouth needs to be trimmed in
order to reduce the overall length of the case. If you find that your cases need to be
trimmed, Dillon Precision offers two types of case trimmers.
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