I am going on a Spring-buck and Oryx hunt in June this year and I am wondering if my 264 Win Mag will be enough for Oryx. I shoot 140 gr Rhino's which is almost a solid. Its the best bullets which I can find in South Africa. home page I know shot placement will be crucial and neck shots should not be attempted. The shooting distances will be between 200 and 400 m. Any comments welcome.