I have just one , a blued model . After fire lapping the barrel to remove 2 tight spots she shoots just fine , very accurate now and no barrel lead . The usual spot , where the barrel threaded onto the frame and the 2nd , which surprised me was where the roll stamping was on the side of the barrel . I had to resize the cylinder throats a bit . It came with a set of N frame target grips , which I knew were not correct . I bought a set of N frame PC Magna's . They are very hard to find . It looks correct now . Regards Paul