The Nosler ABLRs might be a good match for the 300 BO for hunting. The ABLRs being advertised to open up down to 1300 fps.

In the 16" bbl, I'd guess it's possible to get the 190gr ABLR to about 1700 fps range, the 210gr maybe 1500 fps or so.

With the BC's of the ABLRs they should retain 1300 fps to 200+ yards.