Lyman Flash Hole Uniformer Tool question
I bought the Lyman Flash Hole Uniforming tool and have a question about adjusting it.
Instructions say: "...set your cutting length, slide the cone shaped adapter into the entrance of the case mouth. Leave a gap of .010" between the case mouth and cone shaped adapter. Tighten the adapter set screw. Your tool is now adjusted to deburee your cases"
How do I measure the .010" gap between the case mouth and the cone shaped adapter.
Want to deburr and want to make sure I don't enlarge the flash hole by mistake.
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