Update, shot 2 different loads after doing a pressure test with 260gr partitions and H4350.
First load was 76.8gr at roughly 2,710 fps and is pictured higher on the target, first 2 next to each other and the 3rd a little lower (honestly not sure if that was me or not).
Second load was 79.3gr at roughly 2,790 fps and is marked in the picture - very happy with this group out of this setup! Don't think I could shoot it any better off of front and rear bags on a bench.
Recoil was stout with the higher load but with that accuracy I have to use it. Shot it off of sticks afterwards both sitting and standing - and it wasn't bad at all, much better than getting beat up off the bench.
overall, very happy with the rifle thus far - hit a 10" plate at 291 yards with it holding over off of shooting sticks, so I think it will fill the role I had envisioned for it nicely.