RE: What do you consider a good group?
Depends on ability and your standard. It is different for abilities.
20 yds five arrows touching or close. Little space between them.
30 yds. 4 in circle
40 yds 5 in circle
50 yds 7-8 in circle
That is Mine. I wish it were better. 40 yd max for hunting with a clear open shot.