The pre-'64 actions are usually found on well used (i.e. beater) rifles. I've seen a couple of .270s come through my local shop lately in the $750 range.

Another option to put on your list is the H-S Precision. They make a nice one; it's push feed with the Model 70 style safety, their barrels are good too. They guarantee 1/2 MOA accuracy on all their rifles .30 and under. I don't know if they sell barreled actions, you would need to ask them.