Does anyone know the name/author of this short story?

[jttrwffle]

I know this is kind of a longshot, but in English last year I read a short story that I've been thinking about lately and I haven't been able to come up with what it was.

It was set in the early-to-mid-1900's about a husband and wife who go on a safari or a hunt (I think there are other people aiding them on the hunt) and while they are there, it becomes clear that the wife is having an affair with one of the people there. Then, when they are all out on the hunt, the man can't shoot the lion that he's supposed to and the wife picks up the gun and ends up shooting someone....

That's really all I can remember, but if anyone thinks that sounds familiar, please let me know! Thanks!