........Shooting the 52 well is all about doing everything the same every time.........
Two thoughts - if one were to "do the same thing every time", results should be repeatable, regardless of whether they are good or bad. As I see it, that's a starting point. From what I've read, it should be a firm grip, and follow-through is essential.
My next thought - once one reaches this point, and groups are pretty much the same, what to change, one thing at a time, to see if the groups get bigger or smaller.
There are so many things:
Is your trigger finger in the best position?
Would it be better to grip tighter or looser?
Is your grip in the ideal position?
Would a barrel weight help or hurt?
Is your stance the best for this gun?
When all this settles down to hopefully something acceptable, next question is which bullet and load be best? There are lots of choices in pre-made cartridges. There are lots of powders that are supposed to work in reloading. What powder charge is best?
I have a feeling that there is no "one size fits all", as different people have different weights, muscle ability, age, and so on. If I find something that is perfect for me, would it be perfect for others, and vice versa.
One limit that people might have, is sights. I'm pretty sure that my eyesight limited how well I could see the sights. Now that the eyesight has been improved, maybe this will help me shoot better. Then there's the choice between steel sights and optics.
No matter how good any of the above are, if one is disturbing the gun when firing it, all the above effort is wasted. The "ball and dummy" drill ought to answer that question. And lots and lots of dry-fire, to be able to fire the gun the same way every time.