consistent low & right means you are squeezing your fingers at/as the gun fires.
test this--point the UNLOADED gun at the clock and fire....notice how the bbl dipped down & to the right?
now, start with a firmer grip:
start strong--stay strong--end strong.
otherwise good group
what was your rate of fire? 1 per second?
your stray shots indicate either you were getting tired ( they were among the last fired?)
or you spead up faster than you are good enough yet to do.
but still not bad at the distances you stated.