You may have already found a load by now, but in case you haven't... I used to use:
Win 70 Classic stainless/synthetic with the BOSS
200 grn Hornady Spirepoints
71 grns of RL 19 for 2650 fps
OR 77 grns of RL 19 for 2900 fps

Recoil with the lighter load was less than a friend's .270 and fun to shoot. The heavier load still was comparatively mild with the muzzle brake. Groups ran about .7" with 3 shots, 1.25" with 5.
Funny thing though, I never could get 3000 fps with 200 grain bullets using any "book" loads, even with the 26" braked barrel.