I've not shot Kodachrome in almost 30 years. I used it when I was just beginning to learn photography, and a pro buddy explained bracketing and the narrow exposure latitude of positive versus negative films. He said, "Grab some K25, and go shoot red malboxes. Bracket the exposures annd see what you get." I liked the colours, but hated the hoops I had to go through to get the processing done, even though Kodak had a large facility (now closed) here in Toronto. When I discovered the convenience of E-6 films, I switched and have been using them ever since. So no, I've never used Kodachrome in my rangefinders, and now likely never will. I'll stick with the E6 films I know and love.