I built my 300 BLK SBR using a Noveske 10.5" barrel. For the most part, all I've shot out of her has been either Remington or Sig when it comes to subs. There was a couple hundred rounds of some offshoot brand (jameison I think). Also, I don't bother shooting too much without the can on her for the subs. After all, it was designed to be shot suppressed anyway. And yes, the can will probably add enough back pressure for the action to smooth out for you.
Supersonics, I don't usually use the can to run them. Same thing, Rem and Sigs.