A lot depends on circumstances, if the client is a good hunter and a good shot and using the right calibre, and at a range the client was capable of, I would be happy for the client to shoot.

I hunted Tanzania earlier this year with a client who posts on this forum and to be honest, he could hunt and shoot like a demon........ and I'd be more than happy for him to take the shot out to at least 300 yards, if he wanted to.......but he's about the only one I can think of offhand, esp at that kind of range.

At the end of the day, a neck shot on most animals shouldn't be too much of a challenge for most hunters.....

(IMO) the neck shot that is most commonly stuffed up in on the Buffalo.