im getting my new 257 from hill country rifles this week and want to work up a load with these. anyone have any experience with powders, speed and groups that work for them?

I tried IMR 7828 with them. Accuracy left something to be desired. I am currently working with the Barnes TSX in 100 grain guise. Upon the recommendation of many on this board and others I am trying RL22 for the first time.

ive seen that a few times also, ive never tried that. i bought some IMR4831 to start with. nosler lists this as being the most accurate in the manual. what are max loads RL 22 that are listed?