Thanks, I just checked every chamber, it varies a little bit +/- 0.200 but the left side gap is 0.010 to as big as 0.012 and the right side is 0.007 to as big as 0.009 so the barrel shank is for sure not square or even. I shined a 180 lumen light on it and its clear to see the barrel shank is really excessive on the left side. I'm thinking I need to call S&W to complain. As you all know model 617's are pricey guns. I would expect more craftsmanship from a $700+ gun! My smith model 22A-1 shoots as good and it was only $275