'Parashooter' - A maybe naive thought regarding drift with the 185 grain Berger "Juggernaut" match bullet and adjusting Krag rifle rear-sight windage.

Your table shows a rather uniform drift, (to the right, I'm sure), out to 1,000 yards.

I imagine the Berger bullet would depart the Krag bore angled to the Left, (probably due to barrel harmonics), if things followed the pattern found in Ordnance Department testing, conducted in the mid to late 1890's.

IIRC - Krag projectiles moved to the Left significantly as range increased. However, at around 1,000 yards bullet drift had brought the projectile back toward the Right and it actually crossed the 'center line' and continued drifting to the Right.

Unless I'm terribly missing something, wouldn't the Krag sight windage adjustment have to take into account the angling of the projectile to the Left, as well the bullet's rotational drift to the Right?