Well in my current 7mm Remington Mag, the barrel likes 150 gr bullets. So that is what I shoot, Mostly Nosler Partitions and Federal Fusions (Factory Load), In my other rifle, an old 700 BDL, it even had holes drilled in it for Lyman Peep sight. I shot a lot of 175 gr Nosler Partitions and killed a lot of game with it. There is no real magic to it, just stick a good bullet in the right spot and then get out a sharp knife. You should be able to get 3000 fps with 160's out of your barrel with some of the slow powders that are around now, try Reloader 22 or 25. My current 7mm RM I am getting around 3200 fps with a 150 gr bullet, plenty flat shooting too. Work up carefully since chambers vary some what.