I'd suggest that if one is not able to produce groups of around 3 inch diameter than they aren't going to learn much. Fliers outside the 3 inches are fine. But if you're not able to produce a recognizable core group of around 3 inches then it's time to move the target closer.
From there work on the basics of grip and hand stability to achieve a rock like steadiness of your hand(s) where ONLY the trigger finger moves with no sympathetic movement in the rest of the hand. And where there's no flinch or other reaction to the round going off. With that the core group will shrink. When the core group has around half the bullet holes touching each other and the core group is 1 inch diameter it's time to move the target further down range so the group opens back out to roughly 3 inches and work with the basics again to reduce the size. If the skill increases to where it's back to 1 inch diameter again then move it further down range to open it up again.
If you get to where you're producing a core group of 1 to 1.5 inch at 25 yards from a free standing hold then sign up for the National Team. And at that point you'll likely benefit from a proper match pistol and better quality match ammo.
For most of us it's a brighter day all round if we can keep all our shots in a 3 inch circle at 25 yards and do it more than once so we know that it's not just an accident or chance thing.