I tried a lot of different powders and bullets for the SOCOM. The only one I load and sell is with the 325 gr. FTX bullet. I went with 40.5 grains of Reloader 7, case trimmed to 1.571", COL 2.138", Hornady Comparator 1.6475" and a slight crimp after seating. It didn't need a crimp to feed well...