So, I am curious of your opinion, or even better, experience. I think these cartridges are nearly identical on paper (please show me your data if you disagree). One of them uses a short action but a magnum bolt face the other one is a standard action and bolt face. Both of them are niche cartridges with passionate followers although the 280 AI is becoming more and more mainstream with the increasing availability of factory ammo (discounting COVID/politically charged era). Which one would you choose for a new build? Why?