Originally Posted By: pahntr760A stock needs to be bedded to the action. No factory stocks will fit like one that is bedded. No aftermarket stock will, either, until they're bedded.
I buy stock more for shooter comfort, vs shrinking groups. Any rifle I have a new stock on had shot well before. But the new stock certainly make it more consistent, group to group.
+1 
A proper stress free bedding job will help "wring out" the most consistent accuracy from your weapon.