Your groups are quite large at 10 yards. There are some issues regarding shooting technique which you could look at. It would be certainly helpful if an experienced colleague could watch your grip, trigger squeeze, aiming, posture and give you feedback. From a first person perspective it is sometimes difficult to see.
Don't misinterpret my comments as being angry, but my groups are good compared to the hundreds of other shooters I see at the range. Once in a blue moon I'll see a shooter that is better. The groups I posted are good enough to easily qualify as an NRA pistol shooting instructor. Look up the shooting qualifications to become an NRA pistol shooting instructor. Besides that, covering your entire group with your hand at 10-15 yards has always been considered decent shooting.
I read your postings and saw your groupings at 25m, and they are outstanding and probably rate at a professional level. I'm an old guy in my later 60's that wears progressive lens, so comparing my groups to yours are not in the same playing field. I always shoot standing with a two hand hold with two shots every three seconds or so.
Here's a video of NRA instructor qualification. I'll bet you are surprised at the liberal tolerances allowed, but most police and regular shooters cannot shoot this well to qualify as an instructor.
