Lately I've been using HS-6 in my 357 plinking loads, both 125 & 158 gr. jacketed bullets.
I'm curious how you define "plinking."
HS-6 will do the job for what most consider plinking ammo (generally, de-tuned ammo for basic range shooting). But it won't like it. HS-6 is notorious for running sooty and inconsistent unless it's pumped up good n stout.
HS-6 is not what I consider versatile. It likes heavy bullets, and it likes to be massaged toward the upper end of the load data scale. That's where it runs well. Otherwise, not so much. Some propellants turn down better than others. HS-6 is not among them.
I've run 158 XTP's with HS-6 to 1153 f/s through a 4" bbl; and 1107 f/s through a 3" bbl (at the "set" recipe charge weight; I went beyond during the course of the load work ups). Although about 100 f/s slower than what you'd expect from a big slow propellant, they are excellent handling rounds and well suited for shorter barreled guns. And still potent in their own right. This is where HS-6 shines. Very pleasing, well "balanced" ammo.
I've done lots of experimentation with 125 grain bullets but could never get them to calm down and be consistent with HS-6. They were plenty accurate (XTP's are always accurate - the propellant seems to not matter), but the chronograph showed high ES and SD numbers.
At any rate, "plinking" ammo can be made with HS-6, but it's not in its wheelhouse. Other intermediate burn rate propellants will likely do a better job (AA#5, Power Pistol, even Unique, and others).