I picked up some Hornady .452 xtp j words at my lgs. Thought they were 230 grain, I get home, lo and behold they were 250 grain (asked for the largest 45 hp). My Lee manual doesn't have any data for the 250. Been searching the net almost a week and having no luck. Powders I have available are W231, Tight Group, Tite Wad, SR 7625 and H110. Any help supplied would be greatly appreciated.