larr is dead on. It is all about harmonics. I am the guy who initially started the thread about the Model Seven Predator pressure points/blocks that were inside the forearm near the front swivel stud. I bought the 17 Fireball in the Predator, it was a good hunting rifle but would not shoot groups due to inconsistent point of impact when shot one right after the other. Todd Kindler bought the same rifle I had, and he did all sorts of things to it before shooting it, bedded, free floated the barrel, trued the action, squaring the bolt face etc.
In reality some rifles need those bedding blocks up forward due to the thin barrels with higher harmonics or vibrations. My gunsmith directed me to do what larr did basically, add to the blocks, not take away. Only he told me to use black electrical tape on the blocks, making them taller, to equalize the pressure on both sides of the barrel. try this,if it fails, buy a new stock. Mine is great for hunting, it will shoot to the point of aim when cold and maybe move 3/4" to an inch hot. Next time I have it out of the stock I will blue the fit to the blocks with chalk or something and adjust accordingly. Good luck.