I don't want to say that a Colt has a more delicate action, but maybe a more refined action. S&W a little more robust, or utilitarian. With a S&W, it could go a little out of time and still work fine, up to a point. A Colt, with the same wear, would be more likely to show the problem, maybe even lock up. If you treat it like a hollyweird gun, the Colt won't take the slamming the cylinder shut and excessively fast cycling as well as a S&W. But it's not good on either one. I consider the difference between the actions of Colt to S&W the sam as the difference between S&W and Ruger. But that's just my opinion.