I have experience with the .300 Win Mag, looking to see if any one out there has experience with hopefully both. Looking at building a new heavy rifle and it'll be one of those two chambers, just don't know which. If I go Win Mag it'll be set up to shoot the Berger 230's. The WSM I don't know what I would run but heavier the better for me. I want to set it up for mostly LR shooting but will double as a hunting rifle for a couple weeks out of the year. Either way weight will be a consideration while being built. Let me know your input on the WSM or if you have experience with both then your comparison of the two. Thanks.