I've been considering something similar. I'm wanting to ditch my T3 .308 and do a T3x 300wsm build for moose hunting. I think you'd be best to wait it out for the right caliber to come your way.
Reloading is costly upfront, but definitely the way to go if you want to shoot volume. A buddy once told me "Reloading isn't cheaper, but you get to shoot more" ha!