I made this load for my cousin's Browning A-bolt .338 Win. Mag.; he has killed 5 oryx with this load. The furthest was 200 yds. All hit in the shoulder and passed through. They all droped on the spot. He obtained under an inch with this load.

Barnes 225 gr. XFB
RL-22, MIN: 73.0 grs. 2782 f/s, MAX: 78.0 grs. 2919 f/s. (The MAX load wasslightly hot for his A-Bolt, so I reducedthe load by a grain and it was fine.) (DON'T FORGET TO START AT MIN).

You could also try the Barnes 225 gr. XLC FB, or 225 gr. TSX FB.

Good luck.