IDK if it'd work out as well with one of the more usual suspects (4350, RL16, etc) maybe that's why we don't hear about guys downloading it so much..? With stick stuff, I'd probably try H1000 or something slower that'd still yield good case-fill..? (YMMV)
I've had great luck with downloading it, but that's using Sta-Ball exclusively. One neat thing about ball powder is that case-fill doesn't matter nearly as much as with stick stuff... this is partly why running 20+ range-pickup, hastily loaded, run o' the mill USPSA 130pf 9mm bunny-fart loads will get a low SD of ~5 when run over a chrono (even though the cases are only half full).
It's still ball powder though, which sometimes makes it a pain in the ass in other ways, especially numbers-wise: mainly it doesn't do one any favors like H4350 and/or Varget seems to, the combustion just isn't as even/consistent (that's even if you're weighing every charge to +/- 0.02 gn) so it's harder to live with in that respect. I've had to become a better (more OCD?) reloader to get to where now I constantly/regularly see good ES/SD numbers with it (usually an SD 7-9). That, and in my experience, it's only really temp-stable if it's nice out, it can get wonky once the temps are lower towards ~40degF. I've had a couple of matches where my dope seemed to fall apart and be all over the place in the morning, only to then fix itself and get back on track as the day went on and the temps warmed up.
I figured this out by accident of course, previously I'd tried loading the 6CM slower with H4350 and it didn't work out too well, but later, when Sta-Ball was the only thing available and all I had, I tried it again and it's been great since (I've shot a bunch of it like this too - 2 barrels, ~2300rds of life each).
Accuracy is better than decent too, here are 5 shots off a tank trap/Shmedium, 41gn StaBall jumping 0.100":
View attachment 8010016View attachment 8010017
