I just recieved my new toy. I had a Win mod 70 in 300 WSM rebarreled with a Lija 338 barrel in 338-300 WSM. Now I need some load data. The 338 WSM holds about 6 grains less powder than the 338Win and 13 grains more powder than the 338/06. These figures are to the base of the neck. Anyone have any experience with this cartirdge?