I am not familiar at all with this stated problem; and apprently neither is John Brewer, winner of the U.S. National F-Class Championship in October, 2004 or his 6.5 x 284.
John is a member of the U.S. F-Class Rifle Team, and will soon depart for South Africa to compete in the World F-Class Championships. The chosen scope? As you can see, Night Force, Night Force, Night Force and yep, Night Force.
Night Force isn't heavier than any Leupold or Schmidt Bender and sits atop all of my rifles.
If you are interested in more information regarding the Team, here is their contact information.
U.S. F-Class Rifle Team
P.O. Box 372307
El Paso, TX 79937-2307