This article by By Mustafa Curtess of Austwell, TX, was published in the May/June #229 issue of The Fouling Shot. I have come to agree with Ed Harris that Micro-Groove barrels can shoot cast bullets extremely well, but I only discovered this by accident.I have a M336 made for Sears, Roebuck. It had a 6-groove barrel marked J.C. Higgins M45 that was completelyshot out, although t