I have a '49 detective special and though it has obviously been a long time shooter with a fairly worn bore and finish. It has never really given me problems as far as function is concerned but here is what I saw when I was checking it out today. I always thought the cylinder locked up pretty well but I felt today that on 2 different chambers (opposite one another) when I pull double action my cylinder doesn't always go fully into place. Normally at the range I shoot most in single action and when the cylinder is in the same place when the hammer is back it goes into position but can easily be turned out of position by turning the cyoinder by hand. Is that dangerous? What is the cause? I would think since it only happens in 2 positions it must be the edges of those grooves being worn down more than the others? what do you all think?