Perhaps one man out of 1000 has the expertise in range estimation and shooting ability to attempt such a shot. A happy medium, whereby the bullet will expand over a wide range of distances is probably the Nosler Ballistic Tip. It has a thinner jacket than the Winchester Silver tip, and with its polycarbonate point to facilitate expansion it is a far better choice at .300 Win. There are many premium controlled expansion bullets available to the handloader, but since you don't handload, Federal Cartridge, I believe, loads the Nosler Ballistic Tip in your caliber. If you haven't found the accuracy of 150 gr.
Every rifle is a law unto itself.
The Federal rounds loaded with 150 gr. Nosler Ballistic Tips may very well surprise you. They have a reputation for superb accuracy. The Model 70 is also very touchy about the tension on the three guard screws holding it in the stock. The middle screw should only be tightened to 40 inch-pounds of torque.