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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Juenke Machines being manufactured gain
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<blockquote data-quote="Mikecr" data-source="post: 876190" data-attributes="member: 1521"><p>It's air-coupled ultrasonic testing.</p><p>The interface between copper jacket and lead core represents an accoustic impedance shift, causing reflection timing that shifts with jacket variance to the transducer.</p><p></p><p>Doesn't take much investigation to understand why these are expensive</p></blockquote><p></p>
[QUOTE="Mikecr, post: 876190, member: 1521"] It's air-coupled ultrasonic testing. The interface between copper jacket and lead core represents an accoustic impedance shift, causing reflection timing that shifts with jacket variance to the transducer. Doesn't take much investigation to understand why these are expensive [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Juenke Machines being manufactured gain
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