If you have 50 rounds or so down it, take the barreled action out of the stock and see what the aluminum bedding block looks like. You may find it looks like the end of an abused cold chisel. If it does, Make sure you grind it down and bed it (sides tight) before you waste any more powder, bullets, and barrel life. It only makes your stomach upset for a short time when you first start grinding on a rifle that costs that much. In my experience that rifle/round combination absolutely has to be bedded to perform properly. It took me a few pounds of powder to learn this. When mine was an Accumark it worked with 106 gr Retumbo/200AB, or 115 H50BMG/220 SMK. Try not to shoot more than 5 before allowing it to cool as at about 6-7 things start wandering, and if you get it really hot, it will carbon foul like concrete. RL25 was the worst for me in that aspect.
Good luck, I hope you get it figured out.