Originally Posted by Bart B
There are at least two others inside; jacket wall thickness is one.
True Bart. There are a lot of things to consider before tossing bullets, -or keeping bullets, based on measure.
Jacket thickness and variance affects stability and would be compared with a Juenke ICC. Same with core depth, which can be checked with a special indicator anvil.
We could benefit from a tool for meplat measurement, which is tricky, and really a bunch of other things..
But I suspect that until we have this, most shooters will continue to generalize value beyond rational in what they have today..
esshup, the tool is often used both with and/or without it's base.
And yes it does measure from the nose. The indicator anvil rests on the nose.
With qualified base angle, ogive radius, and appropriate tool leade angles, the base would be used to compare bearing only(isolated).
Even this is not a 'measurement', without a standard for indicator zero.