That’s how I learned to shoot. .38s in my dads 357. Never did want to try the magnum load.
Way back in 1968, at the tender age of 25, I bought a S&W Model 19 .357 and, never having fired a .357 round, took it out to a desolate group of sand dunes a mile or so away from my folks’ home just to see what it sounded like. I fired two .357 rounds at about 4:00 p.m. without ear protection. My ears were still ringing at 10:00 p.m. I’ve never fired that revolver again without ear protection.
.357 mags wear my wrist out fast. 3 rounds and I’m done. Sure glad I can get some use of the gun with .38’s.