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?