It's crazy how much these threads blow up. This topic has a lot of opinions and a ton of pictures (which is great) but still I think most people are going to decide what is right for them based on their own experiences. I would hope no one is going to be swayed one way or the other based on someone else's experiences on the interwebs or podcasts or anything else, however, If you don't have experience in the field or are new to hunting with a rifle, I suppose that is exactly where a feller might get their information. Wrong or indifferent or otherwise, I have had my own experiences and have learned that bullet construction is definitely a thing to consider, as well as size of the projectile.
I shot a Barbary in NM that I never recovered. Shot felt great, distance was about 100 yards. I was shooting a 6.5 WSM with 140 gr accubonds. I have no idea what happened obviously and have no pictures to back it up but, that magnificent animal left my life forever and never gave me a follow-up opportunity.
I am not going to bash on 6.5 calibers or even accubonds. For me though, that was a bad enough experience that I now don't shoot accubonds and I hunt barbary sheep with a .338.
A .338 is not the right answer for everyone but I will say, I haven't had any animals walk away after a shot from that thing. Still haven't got another Barbary though, I hope its gunna happen this year to see how a 230 gr eldx performs on one. Happy Hunting!