Calmex, if you need a 38 that handles a heavy load, the Ruger SP101 is interesting.
I am told, but cannot confirm, that the 38Spl version will handle 357 loads in 38 cases. I have done it, with no obvious problems.
The 38 version of the gun has a shorter cylinder and a smaller frame opening.
The problem is, the Rugers are beefy and big. I have only rarely been able to carry concealed in situations where if the gun showed, nobody would care. Usually, I've been carrying illegally, or at the very least, without all the i's dotted and all the t's crossed. So I needed to have really good concealment. It had to work all day long and in a warm climate. Central Mexico is generally not a "hot" climate, it's a warm climate and it's reliably warm. Most days of the year are "shortsleeve" days and only a few are "longsleeve" days. Canada totally sucks by comparison if you like -- no, actually covet -- a warm climate as I do.
S&W J-frames or Colt Detective Specials seem to be about the largest guns I can conceal to a degree that makes me comfortable. The Walther PPK line, small enough to conceal as well, although described in the book "The Man with the Golden Gun" by the killer Scaramanga with the line "Yeah, that's a stopper", most certainly is not. There are some newer 9's on the market that I'm sure conceal well, but they are not available in Mexico and in 9 m.m. violate the prohibition against Military calibers -- which means jail if you get caught carrying illegally instead of just a misdemeanor that you can wiggle out of and probably even get your gun back. So, a pocket carried .38 it is. It's not quite enough power, but it's almost enough. The huge and comfortable Crimson Trace Laser grips on my wife's Model 60 (no dash) seen here are too big for the pocket. She used a Ray's Holsters Concealed carry purse that even passed a Mexican Secret Service inspection when she had Margarita Zavala (wife of then President Filipe Calderon) drop in to see the wife in her office. They didn't have any scanners, just a visual check -- but they did not find the hidden compartment with her snubby.
This Colt Detective Special fit into my Bianchi Pistol Pocket, although a bit tight. It certainly fills the pocket, but it does fit and it gives an extra shot over the S&W J-frames. I sort of covet a DS, but I have to work with what I have.
The mini-Glocks are available in .380 ACP, and can be modified to .380 Cal with a bit of work to give you the power of a 9 m.m. . A good friend carries this one, with the pocket/belt clip and the trigger thong (I've never worn a "thong" myself) to prevent unplanned vasectomies. I think you'd be in a gray area, though, if caught with one. Technically, you're legal -- but what if they don't want you to be? The law in Mexico is not applied evenly. Money doesn't necessarily get you off. Who you know, and who might vouch for you is a far more reliable recourse when you're in trouble. I know I can get away with a pocket .38. Why push it? Reality is: carry what you can get away with. It probably won't be what you want, but as long as it'll do.....
Colt DS laid over a mini-Glock for size comparison.
So give your snubby it's service check, and get your pocket holster.
Insert snubby into pocket holster.
Push entire weapons system into appropriate pocket.
Blouse shirt over pocket untucked to cover but not obstruct.
Go to taco stand. Be cool. That's how it's done. The Rugers are too big.