Expanding and then resizing sounds like it is the safest approach. I'm going to research it before I try. I have a direction to head.

I don't like the idea of seating into the lands either. I know some do it, but some much more knowledgeable than I don't.

I'm going to record some measurements first - new brass, and my once fired rounds.
Will get to some gauges as well.

Thx