I have been slowly accumulating pieces parts to start reloading the 350 Legend. What I have been unable to obtain is either Lil Gun, IMR 4227 or CFE Black powders, these are "Unobtainum." I have Reloader 7, and CFE Pistol, but there is no load data for these. I have Winchester cases, both Winchester and Remington small rifle primers and Hornady 170 grain .355 bullets. I looked at 357 Maximum loads but they were using Lil Gun too. Any suggestions.?