JB recently wrote an article about the virtues of 2,700 fps. I think he wrote it specifically for the Sierra bullets. Long ago, I developed the theory that the GK worked just fine if their sectional density was held to a minimum of .240 or so with muzzle velocities of 2,600 to maybe a bit over 2,800 fps. I have used the GK in that window with the .308, 30-06, .270, and 6.5x55. In those instances, they work fine. Go less than that in SD, and in my experience they have a nasty tendency to come apart. FWIW, I have found the HPBT to be quite a bit tougher than the soft nose counterpart. I like the 160 HPBT in my 7mm Remington Mag.
