it is a damn problem for me too. i did not really shoot much in last 20-25 years, other than very occasional outings with some friends, may be twice a year or so. or sometimes none at all.
to my frustration, it is indeed a perishable skill - and mine quite, well have perished.
with rapid fire all goes way down left - definitely jerking too much. and probably squeezing right hand too much. as i am trying to go by muscle memory on this - it is frustrating, as it means, probably, it needs to be re-learned, a lot.
as slow pace it kinda recovers but at 10yds spreads more to the left.
fast double taps - again all goes low left.
like - here, below - it is at a 30ft distance, 10 rounds, at a rate of 1 shot per sec or so, may be bit slower. i also suspect my red dot if not exactly zeroed to perfection, but, i can live with that.
so, a beginning was ok, at a middle of the clip hands start shaking, then it got closer to center again, but, all spread around pretty much. frustrating. and that is with red dot from 10 yards.
and this crap is quite typical now, with 3-4 shots outside of the target.
really pisses me off to see how it goes off up right and then off low left and i do not even sense why and when.
will try to do a session with a range instructor, but, go figure.