LOL! … So much for your research.So after much research for something outside my wheelhouse of cartridges, I have determined I need a .280 AI.

Scarce factory ammo makes it a tedious handloading proposition, which in turn means a huge expenditure of time at the reloading bench followed by the obligatory range time to vet those handloads.
Nope. Commonly available cartridges can cover all your bases.
