Leupold VX6 HD 4-24x52 this scope is amazing. its on my 6.5 PRC and I have a Kahles 525i on another 6.5 and there are some subtle differences but I hunt with the VX6 HD and not the Kahles. It would be a great scope for your 300wsm, had this scope not sold I was going to buy it and put it on my 300wsm