I have shot stocks with aluminum bedding blocks, then bedded them, and they shot much better after being bedded. People are saying to do skim bedding, but I gouge out channels in the aluminum with a Dremel tool, and leave only the portion of the aluminum that is right around the action screws, so the height of the action remains the same; also, that is tantamount to having pillars. I gouge out the recoil lug a bunch, on top and front. I think the irregular surface of the gouging process gives better grip for the bedding compound. Watch the youtube vids on bedding, but I would recommend doing a basic wood stock as your first bedding job, so as not to mess up something more expensive.