Ruger Bisley Blackhawk 5.5" barrel. Will be shooting 250 gr XTP bullet. Available powders on hand:H110,Longshot, Titegroup,Lilgun,Universal. Looking for the most accurate load based on your experiences. Would like something in the 1000-1100 fps velocity. Running out of time deer season right around the corner. Out of my typical 255SWC bullets. Only bullet available locally (without ordering) is the XTP. FYI, I have had great results with the 255 SWC Hardcast with 21 grains lilgun. Looking for that mythical "magic load" with the XTP. Please help.