I had a distant ancestor who was a 'successful' bootlegger back in the early days of prohibition back in the 1920's. He was 'ambushed' and killed by a local sheriff and a 'posse' of folks at one of his 'distilleries<sp>' in a rural area of Mississippi as he was returning home from a 'business trip' to New Orleans. I read the newspaper account, and I was a bit shocked by the open 'brutality' and 'corruption' <lots of bootlegging $$$$>of the police back then. The ol'sheriff was quite candid about ambushing the bootlegger<who was unarmed> and killing him and a companion in 'a hail of bullets' <.38's, shotguns and a rifle>- and the shameless smalltown newspaper loved the story. Ol' Bonnie and Clyde and lots of gangsters/bootleggers/bank robbers...were basically assassinated - and in those 'good old days' there was a lot of 'shooting to kill.'
Also consider the medical aspects and the lack of medical technology then.
I bet a wound from a .38 was a bit more lethal back in those days.
I imagine the idea of 'shoot to wound' was not born<if at all>out of less violence but possibly a situation of excessive violence being toned down a bit from the 1930's and 1920's. I think with the crack cocaine problems of the 80's there was a kind of resurgence of 'gang violence' that was reminicent of the days of prohibition...
Maybe there was a time of less violence in the 50's and 60's - but in the 20's and 30's there were drive by shootings and other shootouts perhaps even worse than those of today... Another BIG FACTOR - maybe the biggest factor - was the rise of the automobile ie. police needed bullets that could penetrate and stop an automobile...and crime was becoming more mobile.
The more things change the more they seem the same. As far as my distant ancestor was concerned, his widow<this is 1921>filed a lawsuit but lost.
There was a huge funeral replete with an elaborate horse drawn hearse. I still have his customized lever action rifle. At the time of his death, he had bought his mother a ranch, his brother a ranch, and himself a ranch - and only he and the town banker owned automobiles in the little town in Alabama where they all lived. He sold many a jar of whisky - and the price of a single jar was about a good day's pay for the working folks he sold it to. The wound that killed him was a .38 that entered his back and landed in his gut. If shot the same way today, he probably would have lived.
Reportedly he had moved to Alabama from Georgia after he had - according to rumor- killed a local police officer. Ah the peaceful good ol'days!
Remember the .38 was a step up from the then popular .32. I do wish all the police were like romanticized English Bobbies like in that Beatles song 'Lovely Rita Metermaid' but my local paper has a story today about a female officer impressively using her pump shotgun to shoot down an armed robber...and sadly I must say the newspaper glamourizes it today about the same way as the ones did waaaaay back in 1921. With improved technology and +P rounds, even the .38 is still in business too.
At the time my distant ancestor left the stage, the president was Warren G. Hardin<sp> He was corrupt. Reprtedly he was at one time even let out a window in the Whitehouse to keep his wife from discovering he was having a tryst with a secretary/friend. The Palmer Raids. The Great Red Scare. The Loss of Civil Liberties. Lynchings... I keep hoping a good newspaper will arise in America and sort out all these problems, but I doubt it will ever happen. Meanwhile my favorite round is the ol'.38, and my favorite handgun is the Ruger SP101. After a day of shooting at the range, I like to clean it and then have a nice spot of tea. It is indeed a good round for wounding...but I wouldn't count on it to do just that. Might be a tad too risky.
One reason for mixing .38's and .357's in the same revolver is to optimize control ie. in the first shots one wants less recoil and more control...and if more shots are needed, then the .357 kicks in as the control has been established...and is all the more lethal in its ability to 'finish the job.' That could be a possible inadvertant source of the '.38 is good for wounding' rumor. I sometimes make my last round a .357mag so as to be a kind of felt signal that it's indeed my last round. I also tend to favor an exposed hammer because I always like to know what the hammer is doing before drawing and holstering the gun - and I'm not at all in the bad habit of trying to fire single action.