I'm a little confused whether you mean action screws or bedding screws. As I've used them, bedding screws are headless screws (I've just cut the heads off 3" screws) like this:

While the rifle is being bedded, they're just meant to be used for alignment. The action and stock are not meant to be tightened together much. Otherwise the bedding compound will just ooze out and stress will be induced. When I've bedded rifles, I've just rolled tape around the barrel up on the forend of the stock until there's enough thickness to have the action resting on the end of the tang.
As for action screws, you don't want to overdo it. The most I've heard for any stock is 65 in-lbs. And it's not necessarily important to go that high. What's key is consistently tightening the screws. They might do well at 45 or 55 in-lbs...just so it's always the same and equal between the two. A good torque wrench helps.