Well, the drop-in barrel for G20SF is on its way, and I had a question for the 10 Ring: Do you use the KKM exclusively for range/hunting? Or only when testing/firing max loads? I guess that's two questions... The only other aftermarket barrel experience I've had is with an LWD 40-9 conversion barrel, which I originally picked up for my G33. I've held off creating any hot loads with Blue Dot, 800X, and Longshot powders now until I get the KKM barrel. Everything else I've shot just seems like .40 S&W. Thanks!