A one hole group is good IMO & the first goal. Next would be getting that good group where you want it. (X ring) I feel the shooter is the weak link & would suggest not worrying so much about the mechanical minutae and do some freehand shooting at differing ranges then re-evaluate. Tweaking the load/shooting technique would "most likely"??? be the next step??? With todays tech, filming yourself shooting may have some issues that stand out to you.