Of the two, I'd personally go with the 300's. Load them to somewhere between 1000-1200 fps and never look back (but I would make sure my sights were adjusted correctly before going afield).

The 300 XTP may or may not expand depending on actual, impact velocity, but regardless, it'll penetrate quite well, especially from bad angle shots that are often taken at a moving/attacking animal.

The 240 XTP is a great bullet, but in my opinon should be left to lighter built animals. I have killed black bear, and they are far more heavily muscled/boned than other game in the same weight range except for hogs (which I have killed quite a few of) which are almost identical in structure.