I'm in the process of setting up my third .300 Win. Mag. It is this Kimber 8400 L.A. Police Tactical Model.
I haven't decided on the scope yet, but I'm leaning torward the excellent Bushnell 3200 Elite Tactical in 5-15X. I have 4 of these scopes and every one of them has delivered fantastic results. The factory supplied rail is of steel and has a 20 MOA forward cant.
As far as loads I pretty much have but one in the .300 Win. Mag., and that is the Sierra 190 Gr. Matchking sitting on top of 72.2 grains of IMR 4831 powder. This has been one of the most accurate loads I can find for the .300 Winchester Magnum. It is a beautiful 1,000 yard target round that is capable of shooting beyond. Bill T.