How about a Ruger Security Six?
They're no longer made, but they were made very well. The Security Six had adjustable sights, while the Speed Six and Service Six had fixed (at least all the ones I've seen had fixed). Anyway, the Security Six had a 2-3/4" barrel as one of its options. I believe they also made a 4- and 6-inch Security Six.
It's a good, medium-frame revolver, which means that the hotter .357 loads are a handful. With .38 or .38+P, it's a very controllable gun, and fun to shoot.
You may also luck into a used Dan Wesson with a short barrel, although I have no personal experience with that maker.
The combo of a short barrel and adjustable sights is kinda' unusual in the .357 world. If you can accept a 4-inch barrel, there are lots of choices with adjustable sights (Ruger GP100, S&W Model 28, and many more). A short barrel / fixed sight gun is also easy to find (my favorite is the Ruger SP101).
The gun industry did make short barrel / adjustable sight .357 revolvers, but they're popular and harder to find on the used market. If you're going to have adjustable sights, though, you're not talking pocket carry anymore, IMHO, so you'll need a belt holster of some sort. Once you go with that, a 4-inch barrel is no harder to carry than a 2-inch. In fact, in some inside-the-waistband holsters, the longer barrel sits closer to the body and conceals better.
Finally, that extra inch or two of barrel gives you better velocity, so that .357 Magnum really means something, rather than making a big fireball at the muzzle. The 4-inch guns tend to be a bit easier to control because of the barrel weight, and a lot of us shoot better with a 4-inch barrel (longer sight radius) than with a 2-incher.
If you still want a short barrel and adjustable sights, go for it! Just expect fewer choices and a longer hunt, but you may be more satisfied in the end, when you find that short barreled Smith M-66 or Ruger Security Six.
Good luck!
Dirty Bob