Makes sense. What about run-out. Mine, with unturned necks, is about .001-.002 and I'd guess that yours is zero.
When you begin to turn your necks where do you start? Just down on the shoulder? Also how do you take off a certain amount, such as .002. When I turn for my 260 I set the cutter down on the neck just a bit. Manually turn the device and what comes off comes off. I have no control over if it is taking the neck from 294 down to 292 or 291 or even 290. I have a micrometer to tell me what I've done but I don't have a clue what I'm doing till Ive done it..
That last sentence even confuses me.