What donor should I be looking for? A complete tactical SPS with light Varmint contour where I only need to rebarrel? Or a old beater in the used gun rack to just get the action off from? I’ve also seen 700 stainless steel receivers with my discount for 350ish.
It's really a personal preference thing. I wouldn't purchase a new action or rifle to only strip it and barrel. I'd go for the used beater and have my smith true it up, reblue it and put the new tube on it. The rifles I've had done this way produce sub MOA accuracy and cost less than a new rifle.