If your rifle will not shoot 47 to 49 gr. 4895 under a 150 gr. bullet there is something very wrong going on with it. Start from the start --------- pull it apart. Take the scope off, take the action out of stock. Re-assemble making sure nothing is binding, barrel not touching anything except the action. Torque down everything 45 to 65 inch pounds for the action. 25 to 30 inch pounds on the ring bases. 15 to 20 inch pounds for the score rings. You get the idea!!!!!