.024 (24 THOUSANDTHS) DAMASCUS

[Wild Skies]

Where did this .025 MWT dimension come from? Has there been some recent documented definitive testing done to arrive at that number or is it someone's personal minimum?

The reason I ask is that I was informed via direct correspondance with Michael Lynch, the chief inspector of The Birmingham Proof House (who undoubtedly has more experience in this regard than any other person or entity that I'm aware of) that they inform their customers only if the MWT falls below .020---even though the gun may have passed proof below .020. So, it would seem that .020 is The Birmingham Proof House minimum for concern as long as load pressures are kept under for which the barrels were proved.

Now having said this, we all know there is more to it than just MWT, like condition of the bores, pitting, dents, dings, previous repairs, etc. that can affect the strength of the barrels.