Oh, mine's a .38 Spl-only, too, although the Performance Center laser-etched "TESTED FOR +P+" along the inside of the bottom edge of the frame window at the same time as they installed the 2 7/8" CarryComp barrel, so it probably could survive having the chambers reamed to .357 Mag length, as long as I didn't make a hobby out of shooting the stuff. Due to its unique back-story, however, I'll probably leave it stock.