I have shot thousands of .38 spec through a S&W 586, both WC and SWC and never had the problem of a ring developing.
I've shot hundreds of rounds of .44 spec and .44 mag in Dan Wesson .445 Supermag and never had a ring form.
I suppose YMMV.
My mileage has definitely varied. That's good to know though that it's not universal. Cylinder material? Level of internal polish? Powder? Lube used on gun? Bullet lube? I'll have to research this.