Rem 600 Action
I have been on the lookout for a 700 short action. Today I stumbled on two 600 actions. One being an XP.
I have built a couple of XP's and one 600 but for the life of me I can't remember if the barrel threads are the same as a 700 so the barrel I have will fit.
The XP action is my first choice, even though a bit more money, the solid floorplate/no magazine cutout being a plus.