Blitz
Just to put your .300 Wby in perspective-
I did a hunt with 2 clients. We went in on two lone buffalo, one bull, one cow. The guy stalking in with me was using my 9.3x64 with 286gr Rhino bullets, and was after the bull. At his perfectly placed shot (45 degrees angeled from front into heart), both buff took off, but the bull piled up within 50 yards. The plan was for the other hunter to try and shoot the cow as well, so he had to make his way to us to get my 9.3. But, coming over to fetch the 9.3, he got a perfectly broadside shot at the cow, about 40 yards out. (Remember that cows are generally about 25% LIGHTER THAN BULLS). He took it with his .300 Wby, loaded with 200gr. Swift A-Frames. (In my opinion, one of the best softs ever made). He said that he reckoned that since we were there to back him, it was legal. He continued to empty his magazine into the buff. By now, I caught up on him, and try to give him my .450 Rigby to finish the job. (His mag was empty, remember.) He was totally confused, and did not take my rifle. I looked at the buff (still about 40 y out), and saw that it was readying itself for a charge. (Threw up her head, and sort of pulled herself together.) I shot her into her chest, with my .450 loaded with 550gr Rhino bullets. This took the fight out of her. The other hunter now joined us, and shot her again with my 9.3. I saw that the cow is going down, and asked the hunter to just finish her off with the .450. Another shot, and she went down. (8 in total)The post mortem revieled that the first AFrame did not make it through the shoulder, and that the others were not placed nearly right for a clean killing shot. even when using solids, I believe that buffalo might have caused a lot of s**t, but luckily did not. I learned a lot from that experience, and will stick to the limits set by law. (Mostly 9.3 btw, and not .375 as so often quoted.)

Lastly, my opinion on Mark Sullivan.
He is a great marketer. I would just like him to stop BSting people on why he takes its time to kill a wounded animal. My opinion, if you shoot and maybe wound, kill the animal asap!!!!!!