I think you can infer that your loading process does indeed produce consistent ammo, that rifle prefers the higher charge weight, prefers the shorter OAL ( if I have guessed your series progression right) and that loads 1 and 2 are worth experimenting further with.
I wouldn’t place too much faith in exact ES and SD figures as your sample sizes are too small but they do illustrate “high” or “low” reasonably well.
If I recall you are in search of a higher velocity node, I would like to see your work up results but it seems from what you have given the node could be about a grain higher than your 42.1 load.
are you seeing pressure signs?
What weight of bullet are you using?
"An infinite number of monkeys banging away at type writers for an infinite period of time will eventually reproduce Hamlet" Thanks to discussion forums we now know this to be untrue.