I worked up this load using 140 grain Berger Bul. let in my 264 Winchester Magnum. I really want to try using the Berger Bullet, US869 77 Grains Winchester Brass Remington 9 1/2M COL 3.300 3,100 fps I wish I could've reached 3,200 but 3,100 is what I got. the Berger BUllet really shot with what ever powder I tried. I used Reloader 22, IMR7828, , H4831, ,Retumbo, H1000, Mag-Pro, Magnum, and US869.