SW, I've had 3 different 600 OK rifles, 2 by Wayne at AHR and one from Bijou Creek. They are great rifles. Although you can, most folks don't load them up to 2,400 fps; 2,150 to 2,250 or so is about right and you don't need the big X-Brake hanging off the front of it like a grenade. Great Elephant rifle if you don't have to walk far, or have a tracker carry it. I had a 700 AHR as well, but between the weight of the rifle and the necessity of using the brake, it was a bit much for hunting.