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Rifles, Reloading, Optics, Equipment
Reloading
Ball micrometer vs Horandy Neck Wall Thickness Gauge (spindal, pilot) adaptor
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<blockquote data-quote="Mikecr" data-source="post: 2568849" data-attributes="member: 1521"><p>No, a pilot does not provide true spot measure like a ball anvil.</p><p>This matters (functionally) because necks taper in thickness, including a donut area thickness. So with a pilot, you would read an average thickness from shoulders to mouths, rather than actual thickness at each chosen datum.</p><p>You don't want to add that thickness taper to your intended thickness (pure) reading.</p><p></p><p>Necks can also vary in form (with taper). An indicator will not press out that form against a pilot.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 2568849, member: 1521"] No, a pilot does not provide true spot measure like a ball anvil. This matters (functionally) because necks taper in thickness, including a donut area thickness. So with a pilot, you would read an average thickness from shoulders to mouths, rather than actual thickness at each chosen datum. You don't want to add that thickness taper to your intended thickness (pure) reading. Necks can also vary in form (with taper). An indicator will not press out that form against a pilot. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Ball micrometer vs Horandy Neck Wall Thickness Gauge (spindal, pilot) adaptor
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