I am deciding between taking a .338 winchester magnum with 250 grain bullets and the new .375 ruger with 270 grain bullets. Zeroed at 200 yards the .338 drops 8.8" at 300 yds, and the .375 ruger drops 8". At 300 yds the .338 has 2503 foot lbs of energy and the .375 ruger has 2786. I am taking a .458 lott for my buffalo and really think the .375 ruger would do anything the .338 will and be a backup in the remote case of a failure with the .458. Any thoughts that will decide this quandry??