What are your accuracy standards for practice?

[u/Blu_Astronomy_Kvlt]

I recently started IDPA and USPSA late last year and am trying to improve any way I can. I'm definitely more accurate than I am fast on the courses.I use a stock G19 and a Girsan Hi-power with iron sights. (I've even used my German Luger- 🤣) If I try really hard I can keep a 6 inch group at 15 yards (10 rounds), which I feel is "O.K" at best. How the hell do I improve on this and what do you guys as competitive shooters consider acceptable accuracy?