Seems much easier to me than going to another cartridge that will give basically the same velocity. Plus no need for another set of cases and loading dies. It’s a good thing to have 2 or 3 rifles shooting the same round. They can be set up for different situations.Could chop the 280AI Montana barrel to 18-20”, thread it 1/2x28, and then use a 1/2x28 to 5/8x24 adapter.
I dont know what I want, I need internet strangers to tell me.