I've only burned RL-25 in mine.
110 Gr. AccuBond, 115 Gr. Ballistic tip, and 115 Gr.Barnes Triple Shock all shot best with 60 Gr. I've tried a little more powder but accuracy got sloppy.
I've also shot the 85 Gr. Ballistic tip if you want the data for that let me know I'll dig it out of my notes.
The boys over at www.shortmags.org have posted loads here and there. Just do a search for 25 WSM and 25-300 WSM you should be able to find something you like.
