Yes, it's practice, practice, practice!
I'm not too happy with my standers, but one thing that seems to help me is, instead of trying to stop the wobble by fighting it, I "follow" the wobble instead and only look at the mildot/crosshair instead of the killzone. This seems to reduce the wobble a bit.
Anschutz 2013 MEC1 .22LR
Miroku 3800 12bore