Ok guys I need some help. A few years ago I wanted to build a .338 rig so I went and bought a cadex chassis for a Remington 700 in .338LM (atleast that's what I think it is). I have never taken it out of the box and I want to confirm exactly what I have and what will fit in it. I'm also looking for advice on if I should buy a new 700 complete and drop it in the chassis or buy a barreled action. Thoughts? Advice?
Here is a pic of the label on the box:

Here is a pic of the label on the box:
