I built a 280AI a couple of years ago and it was damn accurate. Shot 140 TTSX into little bitty holes. But new brass was expensive and fire forming brass was just one more thing to do. I got just over 3200 fps but always felt like I was pushing the envelope to get those speeds.
In the end I dumped the rifle and am back to my favorite .270. If I wanted to do a 280AI again I would go the 7mag route. However, your experience might be different and sometimes you just got to scratch the itch.
