In the Jan 1983 Guns & Ammo, John Wooters, in his "7mm Cast Bullets" artical wrote about trying Teflon and couldn't get accuracy that was exceptable. He was able to get 3000fps in the 7mm RM but accuracy keft something to be desired as he put it. Was marginally better down at 2500fps but could do better with standard GC.

Von Gruff.