A $500 new 700 varmint-weight Creedmoor barreled action is not a bad thing.
Regarding your question though, the 20" .308 models are known for being solid. I just bedded a 20" SPS-T version in an LTR take-off for a buddy and it is boringly accurate with just about everything we've shot through it. It actually shot well in the Hogue stock too.
