@unclenick: That is impressive and detailed knowledge. Thanks for sharing.
Let me put in an additional plug for wilson gauges. They do more than check case length. They also check the body size.
When I load plated or cast bullets in my auto-loading pistols, I find that I have to bell the case slightly to prevent shaving of the lead or copper plating. Since the bell has to be removed, I use a wilson gauge to adjust my taper crimp die so that that the bell is removed but not so much that it will create head space problems.
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