What I don't understand is how come the 250-grainer is so fast, while the 220-grainer is so slow.
According to the data, the .35 Whelen with a 250-grain bullet is faster than a .338WM with a 250-grain bullet. And a 225-grain .338WM faster then the .35 Whelen with a 220-grainer.
Don’t know where you came up with this but the 338 is faster with both the 250 & 255.
