Never knew that S&W put out model 10s in .357, thought any fixed sight, blued .357 were 13s. Interesting.

As for boring out the cylinder of their model 10s to .357, I knew of a few guys who did it in the NYPD. I wouldn't do it or suggest anyone do it, but can't help but wonder if there is any real difference between a modern model 10 and a model 19 cylinder in regard their ability to handle the .357.

Rich