I agree Ripp m on the pounds and ounces etc but one thing to consider is that there are more than quite a few that have the latest,greatest and lightest mountain rifle out and in conjunction with their shooting ability and out of shape condition they go to the back of the class.

One only has to go way back to the old time and great Wapiti hunters in Fiordland and see their old (usually) 303 service rifles weighing in at a ton to see that determination,hunting skill and sharp shooting outweighs a minor weight consideration imo.
The same go`s for the old time alpine hunters in Europe of course.
The hunting world is littered with blokes and their toys that often have jack shite on their walls haha.

I suppose what I feel is that the right hunters will do it successfully no matter what comes into account.

PS I would love to have a Jarrett sheep rifle or the equiv for my Pakistan Ibex hunt but I doubt if I will ever own one so I will soldier on with the old toys I have.