So, I find myself with a spare action sitting in the safe, and I'm bored, so I want to build it.

It's a Savage 4.4" short action, and I have a stock and DBM for it as well. There is also a Steiner 3-15 sitting around that it will likely get.

What should I chamber this one in? I have .308 already.

Some I have considered:
.243
.260
6.5x47
6x47 Lapua

Thoughts???
Reasons???