Builder,

I have used the Hosford gauge for about a year, and I find that I get very repeatable measurements. I have no gold standard barrel to which to compare, but the consistent repeatability gives me some confidence.

I think your comment on using an alternative approach (two finger gauge) for measuring the wall thickness of the chambers makes eminent sense.

Finally, I am always in awe of the creativity of creating new ways of advancing the craft. Congratulations to David.

Berrien