I have a Ruger M77 with the tang safety in 7mm Remington Magnum. I am trying to work up a load for the 160 Accubonds but I am getting dismal velocities. With a max charge of 60 grains of IMR4350 I only attained 2800. With H1000, I worked up to 69.5 grains and got 2905. The case on that one looked the exact same as my starting charge of 66.0 grains. I am using federal GM215M primers and my gun has a 24" barrel. I don't know whether to keep working up with the H1000 with my gun or to try something else. Any help would be appreciated. Thanks. Sean.