The metal sleeve inserts are usually flush with the bottom of the stock holes but most are a few millimeters short of making contact with the bottom of the action. I use to replace them with aftermarket pillars. After doing this on several Savage factory wood stocks, I decided that was a lot of unnecessary work and expense. Now, I just remove some wood to expose the top of the metal sleeve and fully bed the action and recoil lug with Devcon plastic steel epoxy. That will fix any chance of the metal inserts moving.