I have been loading for a HE 2nd model in .455. I have had good results with the Hornady brass and Remington lead bullets for the .45 Colt. Using these components and 5.2 grains of Unique with an OAL of 1.114, I get 785 fps. Reducing the load to 4.5, I get 680. The Fiochi ammo makes 630 fps, and the Hornady clocks 575 fps. Hope this is of interest. Dean