Went to the range today (3/5/12) and tested my new Ruger flat top Blackhawk chambered in .45 Colt / .45 ACP which was produced for Lipsey's. Mine is stainless and has a 4 5/8" barrel. Attached are photos of two targets that I shot at 25 yards. The first target was shot using handloads made with .45 Colt brass, Wolf large pistol primers, 9.0 grains of Unique powder, and 250 grain RNFP cast lead bullets produced by GLC Bullets. I fired 25 rounds of this load and my chrono showed the average velocity was 999 fps. The second target was shot using a load made up of .45 Colt brass, Wolf large pistol primers, 9.0 grains of Unique powder, and 250 grain RNFP lead bullets cast using 50/50 alloy and a Lyman #452664 mould. I also fired 25 rounds of this load and my chrono showed the average velocity was 959 fps. These are the first two loads I've tried in this revolver, and I thought they did pretty good for an initial effort. Interestingly I also used the .45 ACP cylinder and shot some 200 grain lead SWC handload I use in my Ruger SR1911. (sorry...no photo of that target available) While that load didn't group quite as well it did shoot pretty much to the same point of aim. All in all I'm very happy with this revolver. It will join my Lipsey's flat top Blackhawk chambered in .44 Special and my other single actions.