RE: Lazzeroni caliber 7.82 (.308) Warbird
What exactly are you reading where I said a 3.5 inch drop at 400 yards?
Plugging in his published velocities, which is what everyone reads in the adds, and calculating what a 300 Win mag will do out of a 27 inch barrel, at 3000 feet in elevation, and a line of sight 2 inches above the bore.
Using a maximim three inch rise and drop above and below the scopes crosshairs you get the numbers I listed above.
At 400 yards the same bullet (180 grain A-Frame) will be 11 inches below line of sight out of the 300 Winchester. The same bullet fired out of the Warbird will be 7.5 inches below line of sight. A 3.5 inch advantage.
350 feet per second really isn't all that much when you consider everything.
And sorry to say but if you use the same testing criteria that Lazzeroni does with his cartridges on other magnums his super powerful warbird will only have about a 30 yard advantage over the 300 Winchester magnum. This is using a plus or minus three inch rise and fall.
When you keep the testing controls the same with all cartridges these super magnums don't shine nearly as brightly as they do in the ads.
I'm not trying to get testy with anyone about this, I am just saying..... READ THE FINE PRINT.
Of course all of this will vary slightly from gun to gun and load to load but it will be close.