>>To achieve the highest
degree of safety and accuracy,
Lyman recommends that all
bottleneck rifle cases be
inspected after resizing to
ensure that the proper
headspace dimension is
maintained.
>>The best way to check this
critical dimension is with a
Lyman case length/headspace
gauge. The reloader simply
inserts the case into the
gauge to insure that it does
not exceed the maximum or fall
below the minimum allowable
headspace. In addition, the
gauge will identify a case
which exceeds the maximum
allowable case length.
>>Caution: Any case found with
excessive headspace should be
destroyed immediately.