I will be loading AIM 180gr plated bullets using Titegroup. I checked the Hodgdon online data, and the only reference there is for Hornady XTP 180 gr, from 4.2 min to 4.7 max. My Lyman book doesn't even mention Titegroup in .40. Does anyone have a suggestion, or should I just start with 4.2gr and see how it goes? Also, does the OAL of 1.125" make sense for an XDM? TIA.