Please forgive a possibly dumb question: Do you mean .002" below loaded diameter or the fired brass only comes down .002" from its fired diameter?

What I'm getting at is a situation common in 308's with factory chambers. Fired necks come out .344" or thereabouts. But Winchester brass necks are typically .012" thick, so their loaded diameter is 2 times .012 + .308 for .332". So they need sized to .330" for .002" below loaded diameter. But the amount of sizing is .344" - .330" = .014", and that's the "having to size more than 4 or 5 thousandths" I'm talking about.