Lester welcome to the forum.
“Not much on the .357mag for defense…….Snip……. a 4″ .357 is not all that powerful.” Lester
Where did you come across this notion? You might be right if comparing a 357 to a 454 Casull, a 50 S&W, or a 44 Mag but other than that it holds it own pretty well. As far as really viable carry guns for self defence the 357 is king of the hill in the record books.