I haven't (yet) but wouldn't hesitate to do so. Shot one Eland, not with 7mm. I know I would get exceptional, if not complete penetration with 173 and 175's in my 7x57. This is based on my experience with similar weight, soft skinned game.

I would add a caveat that shot placement would have to be optimal. Not a 'shoot at all costs to get the trophy' situation.