Jones;
I agree the first yard truly has nothing to do with velocity loss. What does though is that matter of Sonic speed. Drag rises well out of proportion to the square of the velocity when the the sonic barrier is broken.Thus velocity is lost very rapidly until the speed has fallen to around that 1125 fps. This will of course occur near the muzzle, but not necessarily within a yard. Increased speeds do not give near the advantage in ranging ability the ammo advertisers would have you believe.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra