Good day
Getting the gun is the easy part. Start calling around to your local stores and see what is available for factory rounds, or components if you are reloading. Of what is available, does it meet your requirements for target shooting or hunting? Price of ammo is also a factor.
I found it helpful to search for 280ai pet loads. This is typically for handloads but many posters do talk about the rifles they use, and some brands are more frequent quoted than others.
This should help you in your choices.
Best of luck!