Neal,
I skim bed all my aluminum blocked rifles...they all need it. I have yet to find one that mated action to stock to my satisfaction.
Take some Prussian blue, and apply it to the bottom and sides of your action. Then bolt it up in your stock. Unbolt it, take it out and look for blue on your block. I bet you won't find much...
Also try the indicator bedding test...you'll probably get nauseous watching the indicator dial spin as you tighten/loosen your stock screws.
I've noticed...on alot of the aluminim blocked stock I've examined, that there is often stock paint/texture overspray on the block...usually in the tang area. How one would get good contact between block and action with a glop of paint/texture on the block is beyond me.
A lot of people are under the misconception that aluminum bedding blocks on factory rifles are the be all, end all to bedding, accuracy, global warming, etc. I look at them as another bedding job, without having to make and install pillars.
Despite all of the above, I have seen some 700's with a God awful action to bedding block relationship really shoot well. Go figure...
Justin