Thanks for all the comments, everyone, and the link, Las Vegas Ron... which is a bit of iRonic since the place where I lived when I last owned a gun was, in fact, Las Vegas.
I’m going to go to a gun shop with a firing range in the basement and try out a few of these suggestions. I’m particularly interested in Eric’s suggestion of a Glock. I at least want to look at that, even though I am still partial to the .357 which, as several people mentioned, can handle the .38 loads.
Who knows. Maybe I’ll end up buying TWO guns!
Thanks again, everyone.
Glock has a model that shoots the .357 Sig. I don’t know much about this round but it might be worth a look.