Re: Your thoughts on scopes...
I have never used the Nikon with BDC so I wont comment on the reticle. I do not think 5x20 is to much scope. I have heard alot of people say that "you cant find your target", "all you will see are limbs/branches", ect. If you know how to shoulder your rifle properly you will find your target, and I like seeing the branches that I might not be able to pick up with a lower magnification scope. For me the higher magnification (over 12x) is really nice when you will be shooting over 200yds, and closer in certain situations. I feel that it really helps in being able to pick a spot on the animal, instead of the crosshairs covering up a large portion of the target. IMO the only drawback with the higher magnifiction scopes is their larger size/weight.
I also think that the 300win is a great all around caliber. It will do anything the other popular 30 calibers will, plus. If I was limited to one rifle the 300win would definetly be one of my considerations.
Good luck, Tony