William back on p. 8
"the wall thickness of my Lefever barrels, and the means I use to evaluate them is 100% irrelevant here." And the request to do so is "silly and unreasonable"

The title of this thread is "Wall thickness measurement" and I and others have provided a substantial collection of numbers to help establish the standards of the makers.
Either you do not have a wall thickness gauge
Or you have numbers, which could benefit the forum members, but which you choose not to share.

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