Is your magazine box binding/preventing your stock from being fully seated? That's about the only thing I can think of that would physically prevent your stock from clamping all the way down against the action. The mag box should be loose enough in there to be jiggled a little bit--if it's not, that will tell you it's a culprit.
But I also recommend getting a different stock--you've upgraded 50% of the rifle component(s) that should get you better accuracy, with the other 50% being a better stock (preferably bedded, too).
Otherwise the scope could be at fault, or your bore could be really dirty.
I tried removing the box and putting it together without it, did not help.
Can't get a new stock right now because i don't have the money for a good one. (i.e. With all the features I want) And I refuse to buy a cheap one only to replace it later, that's basically how I got the factory to start with