.1 gr increments are a bit close together but I believe you have good enough results to extraspolate a good shooting load.
Chart 1 looks like you have 2 sweetspots. Which is good because in this case you can choose hot or cold. Shots 3/4 are your low end sweet spot, choose either or since you cant split .1 gr in half, but shots 2, 3, 4, and 5 would have all made a nice little 100 yd cluster. Same looks true for shots 15, 16 and 17. in which case I would go with shot #16 as the load. Overall it looks like shot 16 in chart 1 is the best load for that combo because POI of shots before and after that sweetspot are less erratic than POIs before and after the low end sweetspot, which indicates a much more stable pressure node..
Chart 2, that rifle really likes that bullet. and it does really well with it at mid range pressures. look at shots 6 thru 12. Thats a 7 shot string that would have all landed well within a 1" group. Thats EXACLY what you are looking for when you shoot a ladder test. The load I would select from chart 2 is shot #9 as its right smack in the middle of the string, and its also the best load from either chart.
Stick with the HDY 55gr SP and 24.9gr Varget. Its money.