There's a reason the little 5-shot .38 snubs are still heavily marketed to LE, you know.
Also why some major agencies still issue (or at least authorize) them as secondary & off-duty weapons.
I attended a couple of 1-day in-service training classes a couple years ago. One was a traveling FBI program LEOKA class (Law Enforcement Officers Killed and Assaulted) and the other was also a field class, involving street survival tactics. Both classes included a number of examples of how small 5-shot snubs (and some .380's) had been effectively employed to save the lives of cops. The little snubs are still doing the job.
NYPD requested Speer to develop what became the 135gr +P Short Barrel load some years ago, and they wouldn't have gone to that trouble if the little 5-shot snub wasn't still a viable defensive weapon in certain roles. Winchester also developed the PDX1 130gr +P (same thing as the RA38B in 50-rd Ranger boxes) in recent years.
Unfortunately, the very attributes that make the venerable J-frames so attractive and useful as lawfully carried defensive handguns, also tend to make them more difficult to shoot for many folks. Even accomplished shooters of larger revolvers generally have to work to master the little snubs, and maintain their skills with them.
When I returned to carrying a J-frame after a hiatus of a few years (while carrying a 3913), I ordered my first Airweight. It was just after the 642-1's rated for a steady diet of +P had been released. Previously, I'd only owned steel J's (M36 3" HB & a 649 Bodyguard), and the Airweight was something new to me.
I ended up going through a couple of cases of ammo during the first several months of owning that 642. I needed to not only dust off my neglected DA revolver skills, but adjust to increased felt recoil of using +p loads in the little Airweight.
I was also lucky that I had the opportunity to practice with one of the early stainless 640 .38's (the version marked in the frame window as being rated for +P+), which was available in the training inventory. I used it to help burn up some cases of W-W .38 Spl 110gr +P+ loads that had been taken out-of-service. Those +P+ loads made for some snappy shooting, even in the all-steel 640, and it made shooting +P in my Airweight seem more pleasant.
Nowadays I presently own 7 J-frames. All but 2 of them are aluminum-framed, and they include a pair of 642-1's and M&P 340's.
Even after many cases of ammo being run through my growing number of J's since that first 642-1, I still make sure I keep my skills well practiced with them. Shooting is a perishable skill, after all, and the little J's usually require some dedicated practice in order to stay sharp with them.