A custom action switch barrel is going to be the same money as having a rebarrel done X amount of times .

That is another issue floating about with the RPR's , the guns show head space issues sometimes with the replacement barrels . Have heard about it with both the Proof and LRI prefits . Again reason to doubt building a precision rifle on a Walmart action .

AI is the most reliable of the quick change systems but remember they were designed for military calibers and factory ammo that doesn't get reloaded . There are 5 of there rifles that I have personally seen have set back issues with the bolt lugs running hot rod competition calibers all AW's IIRC .

Just shoot and rebarrel as needed . Unless you run one of the hotrod 6's you'll see 4k ish out of a barrel in a 6.5 at 2800 ish , schedule the rebarrel in the winter when the weather's crappy and remember Fritz likes Guinness and good whiskey .