Thanks Hunter_59.

I'll be the first to admit, that my shot was far from perfect. It was rushed, the bull was 100 yards, quartering away, walking and about to take off. After I took the shot, using a .338 with 240gr, and the bull went into a gallop. I shot two more times, but caught brush. The Jack Russel took off first, then the PH and myself took off on foot after the bull. (This I could hardly believe, I would never imagine running down an animal) But after about 300 yards we found that the dog had that bull doing circles trying to get at the dog. I got prone, and shot the bull at the base of the neck, where he dropped.