WG, I read your link. I especially like this quote from the article:
"We proposed to run 10,000 rounds of Ball ammunition through the gun—in one nonstop shooting session.
Such an effort requires ammunition, and we were lucky enough to have some of the best there is. Jeff Hoffman, president at Black Hills Ammunition in Rapid City, South Dakota, shipped me the necessary ammo to get the job done."
Note to Jeff Hoffman: I'd like to run this test on my USP as a comparison. Please ship ammo immediately.