Al points taken, I think I'd prefer a lighter load in a larger bore, like a .338 - perhaps a 200gr. Speer would be tops on a cat, at about 3,000fps - or the new heavy jacket 225gr. in a .375 - same speed & easy to shoot accurately. Both guns usually print them within 2" of heavier bullets at 100,(friend's guns do) meters so possibly no re-sighting necessary. With .375's this is the norm.